41st week of 2019 patent applcation highlights part 55 |
Patent application number | Title | Published |
20190312472 | STATOR OF ROTATING ELECTRICAL MACHINE AND METHOD OF MANUFACTURING STATOR OF ROTATING ELECTRICAL MACHINE - According to one embodiment, a stator includes spacing strips disposed to be interposed in the electromagnetic steel plates for each predetermined set of plates of the electromagnetic steel plates, each of the spacing strips extending in a radial direction of the stator iron core to form ventilation ducts, a spacing strip attachment plate which is disposed between the spacing strips and the set of plates of the electromagnetic steel plates to fix the spacing strips, and an insulating layer which covers the entirety of the spacing strip attachment plate and the spacing strips fixed to the spacing strip attachment plate. | 2019-10-10 |
20190312473 | ROTARY ELECTRIC MACHINE AND ROTOR MOUNTED THEREIN - A rotor of rotary electric machines includes a rotor core which include first and second core blocks. The first core block is formed by stacking the steel plates in a state where the steel plates are engaged by a first crimping portion and skewed in a first direction in a circumferential direction. The second core block is formed by stacking the steel plates in a state where the steel plates are engaged by a second crimping portion and skewed in a second direction facing the first direction. The first and second core blocks are connected in an axial direction in the rotor core. A hole for inserting the first crimping portion is provided in an intermediate steel plate which is part of the annular steel plates. This intermediate steel plate is provided at a block boundary position of the second core bock and is connected to the first core block. | 2019-10-10 |
20190312474 | PERMANENT-MAGNET GENERATOR INCORPORATING A VARIABLE-RELUCTANCE STATOR SYSTEM - A variable-reluctance stator system for use with a radial-flux rotor of a permanent-magnet generator incorporates radially-oriented stator teeth uniformly circumferentially distributed around a central axis, and at least one moveable magnetically-permeable element in magnetic communication with at least one pair of adjacent stator teeth. Radially-inboard edges of the stator teeth are located outside a cylindrical boundary centered about the central axis and configured to receive the radial-flux rotor. Each moveable magnetically-permeable element is axially positionable relative to the stator teeth along an associated positioning axis substantially parallel to the central axis, so as to provide for linking magnetic flux between the pair of adjacent stator teeth via the moveable magnetically-permeable element. A series magnetic reluctance of the pair of adjacent stator teeth in series with the moveable magnetically-permeable element is responsive to an axial position of the moveable magnetically-permeable element relative to the pair of adjacent stator teeth. | 2019-10-10 |
20190312475 | ELECTRIC MACHINE - The invention relates to an electric machine comprising a stator and a rotor. The rotor is rotatably mounted within the stator and has a rotor shaft which is in the form of a hollow shaft and by means of which a cavity is formed that is provided for receiving a coolant. The rotor shaft has at least two shoulders, and at least one end section, wherein at least three rotor shaft sections with different diameters are formed. A flow element is arranged in the cavity of the rotor shaft in the region of the second rotor shaft section, and at least one radial outlet opening is formed in the casing of the rotor shaft in the region of the second rotor shaft section, said outlet opening fluidically connecting the cavity of the rotor shaft to an outer region of the rotor shaft. | 2019-10-10 |
20190312476 | MOTOR - Provided is a motor having an increased output. The motor includes: an armature including a plurality of non-wound teeth and a plurality of wound teeth having windings wound thereon, the teeth being circumferentially alternately arranged about an axis; and a field magnet including a plurality of magnets arranged side by side circumferentially so as to oppose one of an inner or an outer periphery of the armature, the field magnet being supported about the axis so as to be rotatable relative to the armature. The field magnet is provided with rotating force by sequentially switching a magnetic flux that flows through the non-wound teeth and the wound teeth due to energization of the windings of the armature. The wound teeth include a proximal-end portion having a circumferential width greater than a circumferential width of a proximal-end portion of the non-wound teeth. | 2019-10-10 |
20190312477 | METHOD OF FORMING A STATOR ASSEMBLY - A method of forming a stator assembly, including providing a stator with a plurality of slots and a plurality of conductors configured to be inserted into the plurality of slots. The method includes obtaining a respective first shape for the plurality of conductors such that the plurality of conductors in the respective first shape forms concentric arcs sharing a common center. Obtaining the respective first shape includes forming a respective first portion, a respective second portion and a respective turn portion between the respective first portion and respective second portion. The method includes obtaining a respective second shape for the plurality of conductors, including: bending the respective first portion at a respective first bend to obtain a respective first leg and a respective first arm, and bending the respective second portion at a respective second bend to obtain a respective second leg and a respective second arm. | 2019-10-10 |
20190312478 | THREE-PHASE MOTOR STATOR - The present disclosure provides a three-phase motor stator. The three-phase motor stator includes a stator iron core, a first winding, a second winding, and a third winding. The stator iron core has a ring part and a plurality of pole arms. The total number of the pole arms is a multiple of six and is at least twelve. The pole arms are distinguished as at least two first phase pole arm groups, at least two second phase pole arm groups, and at least two third phase pole arm groups. The first phase pole arm group, the second phase pole arm group, and the third phase pole arm group are arranged at intervals. The first winding, the second winding and the third winding each has a plurality of coils, and the coils are respectively wound around the pole arms of the first phase pole arm group, the second phase pole arm group and the third phase pole arm group. | 2019-10-10 |
20190312479 | Stator Having Bobbin-Embedded Tooth Tips - A stator for a hybrid electric vehicle combines the best features of complete stators and segmented stators. The bobbins of a complete stator are modified to effectively widen the teeth and thereby reduce torque ripple. Each resin bobbin includes cavities on either side of the tooth. The cavities are filled with a magnetically conductive insert. In some embodiments, a single wedge shaped insert is installed on each side of each tooth. In other embodiments, multiple inserts of varying cross sectional area are installed on each side of each tooth. | 2019-10-10 |
20190312480 | Stator of Rotating Electrical Machine - A stator of a rotating electrical machine that can realize productivity growth, compared with a conventional technique is provided. A stator of a rotating electrical machine includes a slot; a plurality of coils disposed within the slot; and an insulator disposed around the coils within the slot. The insulator has an outer peripheral portion that surrounds the plurality of coils; and a bent portion that extends from the outer peripheral portion between the coils and that is folded back on a tip end. | 2019-10-10 |
20190312481 | MOTOR ASSEMBLY WITH SHAFT CLAMP - A motor assembly broadly includes an electric motor and a clamp. The electric motor includes a motor housing and a shaft rotatably supported relative to the motor housing to rotate about a shaft axis, with part of the shaft being exposed relative to the motor housing. The motor housing includes a mounting base. The clamp is connected between the exposed part of the shaft and the mounting base. The clamp is selectively adjustable to apply a variable off-axis load to the exposed part of the shaft. | 2019-10-10 |
20190312482 | FLYWHEEL KINETIC ACCUMULATOR - A flywheel kinetic accumulator provides an accumulator assembly, in which a flywheel that is mounted on roll bearings rotates about a rotation axis; the flywheel is axially supported by two sets of magnetic elements ( | 2019-10-10 |
20190312483 | BRUSHLESS DIRECT CURRENT VIBRATION MOTOR - Disclosed is a brushless DC vibration motor. An eccentric weight of a rotor is securely sandwiched between a back yoke and a permanent magnet, being heavier to provide an increased vibrational force. A bearing coupling portion with upper and lower stopping protrusions prevents detachment of a bearing. A bracket is formed with grooves, instead of through holes, to strongly support a cogging plate of which pieces are connected with each other to form a single body for easy-placement on the bracket. An optimized area of the cogging plate can suppress the rotor not to rise during starting of the motor, resulting in no frictional noise, and a high stopping speed and uniform horizontal level of the rotating rotor. | 2019-10-10 |
20190312484 | BRUSHLESS DIRECT-CURRENT ELECTRIC MOTOR FOR A WIPER SYSTEM OF A MOTOR VEHICLE - The invention relates to a geared motor ( | 2019-10-10 |
20190312485 | MOTOR UNIT FOR WAVE GEAR SPEED REDUCER - A motor unit for a wave gear speed reducer is equipped with: a rotary shaft extending in the axial direction; a rotor unit that rotates integrally with the rotary shaft; a stator unit disposed facing the rotor unit; and a motor casing to which the stator unit is secured. The motor casing has a second cover that covers the rotor unit and the stator unit from the other side in the axial direction. The rotary shaft extends toward the other side in the axial direction, penetrates the second cover, and is connected to a cam. The second cover has a support part that extends toward the other side in the axial direction, supports the rotary shaft in a rotatable manner, and is positioned on the inside of an external gear when a wave gear speed reducer is attached to the motor casing. | 2019-10-10 |
20190312486 | MOTOR DRIVE DEVICE - An object is to provide a motor drive device in which the maintenance accessibility of a fan motor is excellent. A motor drive device includes a second turning engagement unit which is engaged with a first turning engagement unit, which is engaged with the first turning engagement unit and is disengaged therefrom by movement of a first fan unit in a direction intersecting a horizontal direction and in which in an engaged state, where the second turning engagement unit is engaged with the first turning engagement unit, the second turning engagement unit pivotally supports the turning movement of the first fan unit, and in the engaged state, the first fan unit is engaged with a housing such that the first fan unit can be moved to be turned about a predetermined turning axis both to a non-fitting position in which a first connector is not fitted to a second connector and to a fitting position in which the first connector is fitted to the second connector. | 2019-10-10 |
20190312487 | ROTATING ELECTRIC MACHINE UNIT - A rotating electric machine unit includes a rotating electric machine, a high heat generation circuit and a low heat generation circuit both of which are electrically connected with the rotating electric machine, a first cooler, a first-coolant supplier, a second cooler and a second-coolant supplier. The first cooler is configured to cool both the high heat generation circuit and the low heat generation circuit with a first coolant. The first-coolant supplier is configured to supply the first coolant to the first cooler. The second cooler is configured to cool the rotating electric machine with a second coolant. The second-coolant supplier is configured to supply the second coolant to the second cooler. The second-coolant supplier is formed integrally with a low heat generation circuit-cooling part of the first cooler. The second-coolant supplier includes a heat exchanger via which heat is exchanged between the first coolant and the second coolant. | 2019-10-10 |
20190312488 | ELECTRIC MACHINE PROVIDED WITH AN ENCLOSED COOLING ASSEMBLY PAIRED TO AN OPEN COOLING ASSEMBLY - An electric machine is described herein. The electric machine includes a casing, a stator, a rotor generally coaxial with the stator, an enclosed cooling assembly circulating a first cooling fluid within the casing, and an open cooling assembly through which a second cooling assembly can flow; the open cooling assembly cooling both the stator and the first cooling fluid. | 2019-10-10 |
20190312489 | MOTOR COMPONENT, PRIMARY PART AND LINEAR MOTOR - A motor component for a linear motor, in particular a primary part and/or stator, which comprises a laminated core and a cooling body, wherein at least two grooves are arranged in the laminated core in order for at least two windings and/or at least two permanent magnets to be mounted in the grooves, wherein the grooves are arranged in parallel in one plane in the laminated core. In order to be able to produce good cooling and nevertheless provide a cost-effective motor component, the cooling body is connected to the laminated core and arranged parallel to the arrangement of the grooves, wherein the laminated core and the cooling body are adhesively bonded to one another. | 2019-10-10 |
20190312490 | FAULT-TOLERANT MOTOR - A fault-tolerant motor according to one embodiment of the present invention includes: a stator including an inner core stator and an outer core stator, which are formed in an annular shape and disposed opposite to each other with a gap therebetween, and a coreless stator disposed on at least one selected from the inner core stator and the outer core stator; and a rotor connected to a rotating shaft and rotated and including a core permanent magnet inserted into the gap and a coreless permanent magnet disposed on a surface facing the coreless stator. | 2019-10-10 |
20190312491 | DRIVE DEVICE - A drive device includes a motor and a controller coaxially disposed with the motor for controlling the motor. The drive device further includes a cover for covering the controller with an opening, and a connector part separate from the cover for connecting to an external connector. The connector part includes connectors that extend and protrude longitudinally through the opening of the cover. The longitudinal axis of the mouth of each connector in the connector part is arranged and angled differently relative to the mouths of adjacent connectors so that the connectors are positioned within an axial silhouette of the motor. | 2019-10-10 |
20190312492 | INTEGRATED UNIT - An integrated unit includes an electric rotating machine, a controller to control the electric rotating machine, and a connection portion electrically connecting the electric rotating machine and the controller. The electric rotating machine has a rotor and a stator opposite to the rotor. The controller is provided outwardly in a radial direction of the electric rotating machine. The connection portion is provided such that the connection portion overlaps the electric rotating machine as viewed along the radial direction from the controller. | 2019-10-10 |
20190312493 | METHOD OF MANUFACTURING ROTARY ELECTRIC MACHINE - An object of the present invention is to suppress reduction of insulation reliability between stator coils. A method of manufacturing a rotary electric machine according to the present invention is a method of manufacturing a stator including an insulating member intervening between a plurality of coil end portions each protruding from a stator core, the method including: a first step of disposing an interposed member to cover part of the insulating member between the plurality of coil end portions; and a second step of welding part of each of the plurality of coil end portions. | 2019-10-10 |
20190312494 | METHOD AND APPARATUS FOR PRODUCING ROTATING ELECTRIC MACHINE STATOR - A method of producing a rotating electric machine stator includes an insertion step, bending step, and pressing step. In the insertion step, two leg portions of each U-shaped coil wire of a stator coil are inserted into different slots, such that protruding portions as distal end portions of the leg portions protrude in parallel with an axial direction of the stator core. In the bending step, the protruding portion of a first leg portion is bent in a first circumferential direction of the stator core, at a proximal end portion of the protruding portion as a bending start point, from a condition where the protruding portion protrudes from the slot in parallel with the axial direction of the stator core. In the pressing step, a distal end of the protruding portion bent in the first circumferential direction is pressed toward its proximal end in a second circumferential direction. | 2019-10-10 |
20190312495 | PUNCH PROCESSING METHOD FOR ELECTRICAL STEEL SHEETS AND METHOD FOR MANUFACTURING LAMINATED CORE - A punch processing method for electrical steel sheets to manufacture core segments includes: stacking a plurality of electrical steel sheets; and punching out the plurality of electrical steel sheets in a stacked state simultaneously to manufacture the core segments, wherein in a case where the core segments are applied to a stator core in which a maximum magnetic flux density at a tooth portion is to be higher than a maximum magnetic flux density at a back yoke portion, degrees of Vickers hardness of an electrical steel sheet located second from a bottom side and above in the stacked state are set to 180 HV or higher, and 10 HV or higher than a value of degree of Vickers hardness of an electrical steel sheet located on the bottom side in the stacked state. | 2019-10-10 |
20190312496 | AUTOMATIC TORQUE-ADJUSTABLE SPEED-CHANGING MOTOR FOR ELECTRIC PEDICAB - An automatically variable torque and speed motor for electrical tricycles is disclosed, and the motor rotor assembly of which comprises fixed rotors and rotary rotors arranged adjacently in turn along the axis of the motor shaft. Staggered pole pieces on the surfaces of the fixed rotor and the rotary rotor form a staggered angle α along the circumference. The support of the rotary rotor comprises a revolving support ring and two fixed side discs which are respectively arranged on the two sides of the revolving support ring. An elastic compression part is arranged in the inner cavity of the revolving support ring along the revolving direction. The elastic compression part has one end arranged at the inner circle of the revolving support ring and the other end arranged on the side wall, facing the inner cavity of the revolving support ring, of one of the fixed side discs. The present invention can adjust the speed and torque according to the load situations of the whole electrical tricycle. It can run in a highly efficient range in the case of low load, and automatically increases the output torque in the case of high load. The power output of the motor of the electrical tricycle is more reasonable, and the reliability of key parts and components of the electrical tricycles is enhanced, and the service life of the whole electrical tricycles is prolonged; and the whole electrical tricycle becomes more energy-saving and environmentally-friendly. | 2019-10-10 |
20190312497 | FERROMAGNETIC CORE TOROID MOTOR AND GENERATOR - A motor includes a number of individual electric coils arranged in the shape of a toroid around a ferromagnetic core, and configured so that, upon the application of electric current through the plurality of individual coils, the stator generates a rotating magnetic field within the ferromagnetic core. The motor also includes a magnetic rotor having a number of individual magnets positioned on the rotor such that adjacent magnets alternate in magnetic orientation, and are configured to direct magnetic flux lines through the stator. Further, the motor includes a controller configured for controlling the distribution of electric current to said plurality of individual electric coils. A generator may be similarly constructed, where the rotor is mechanically rotated to induce an electric current through the individual electric coils. | 2019-10-10 |
20190312498 | VIBRATION MOTOR - A vibration motor includes a stationary portion including a casing, a substrate disposed above a bottom portion of the casing, and a coil disposed above the substrate and wound with a conductive wire in a circumferential direction, a vibrating body that includes a magnet and weight and that is supported so as to be capable of vibrating up and down with respect to the stationary portion, and an elastic member disposed between bottom and lower end portions of the vibrating body, in which a lead-out portion led out from the coil is connected to the substrate at a connection portion, a lower end portion of the weight includes at least one protrusion protruding downward, and the protrusion, as viewed in an axial direction, is disposed at a radial position on a radial-direction outer side of the lead-out portion and the connection portion and in a region overlapping the elastic member. | 2019-10-10 |
20190312499 | POWER CONVERSION SYSTEM FOR VEHICLES - A power conversion system for vehicles is provided. The system includes a first energy storage device and a charging device with a rectification circuit for rectifying AC power to generate a DC link voltage. A DC-DC converter converts the level of the DC link voltage to generate a charging voltage of the first energy storage device. A low voltage DC-DC converter selectively down-converts one of the voltage of the first energy storage device and the DC link voltage to output a low voltage having a predetermined level. The low voltage DC-DC converter selectively converts one of the voltage of the first energy storage device and the DC link voltage into the low voltage based on whether the first energy storage device is charged according to input of the AC power. | 2019-10-10 |
20190312500 | Multi-level Inverter - A multi-level inverter having one or more banks, each bank containing a plurality of low voltage MOSFET transistors. A processor configured to switch the plurality of low voltage MOSFET transistors in each bank to switch at multiple times during each cycle. | 2019-10-10 |
20190312501 | POWER SUPPLY CONTROL DEVICE - In a microcomputer provided in a power supply control device, an output circuit outputs a PWM signal, in the case where a control unit determines that the value of a switch current that flows via a semiconductor switch is less than a current threshold value. In the case where the control unit determines that the switch current value is equal to or greater than the current threshold value, the output circuit outputs a switch signal output by an output unit. The switch signal instructs ON or OFF of the semiconductor switch. A drive circuit switches the semiconductor switch to ON or OFF, based on the PWM signal or switch signal output by the output circuit. | 2019-10-10 |
20190312502 | DFIG Converter with Active Filter - Systems and methods for operating a power system having a doubly fed induction generator are provided. In example implementations, an electrical power system connected to a power grid can include a generator comprising a stator and a rotor, the stator connected to the power grid via a stator power path, and a power converter. The power converter can include a line-side converter coupled to the power grid via a converter power path and a rotor-side converter coupled to a rotor bus of the rotor and the line-side converter via a DC link, the rotor-side converter configured to convert a DC power on the DC link to an AC signal for the rotor bus. The power system can also include an active filter comprising one or more active controlled components, the active filter being coupled in parallel with the rotor-side converter to reduce harmonics of the electrical power system. | 2019-10-10 |
20190312503 | CONTROL DEVICE FOR ACTIVE FILTER - Disclosed is a control device controlling an operation of an active filter which is connected in parallel with a load at an installation point (P) with respect to an AC power source and which supplies a compensation current (Ic) to the installation point (P) so as to compensate for a harmonic component of a load current (Io) flowing through the load. The control device includes: a dq converter converting the load current (Io) into a component of a d-axis current and a component of a q-axis current; a high-pass filter extracting a harmonic component from at least the component of the q-axis current output from the dq converter; a multiplier outputting a result obtained by multiplying a component of a d-axis current output from the high-pass filter by a compensation rate (Kd) as a current command value (id*); and a multiplier outputting a result obtained by multiplying the component of the q-axis current output from the dq converter or a component of a q-axis current output from the high-pass filter by a compensation rate (Kq) as a current command value (iq*). The compensation rate (Kq) of the q-axis current in the multipliers is adjustable. | 2019-10-10 |
20190312504 | MODULAR MULTI-LEVEL CONVERTER AND DC FAILURE BLOCKING METHOD THEREFOR - Provided is an MMC and a DC failure blocking method therefor, the MMC and the method being capable of DC failure blocking and reducing loss using a combination of half-bridge submodules and full-bridge submodules for converter arms of the MMC. According to the present invention, there is provided a modular multilevel converter (MMC) including multiple converter arms, each converter arm having: N (N≥2, an integer) submodules connected to each other in series; and a circuit opening unit connected to the N submodules in series to open a circuit of the converter arm, wherein the N submodules are n (n2019-10-10 | |
20190312505 | Boost Converter Short Circuit Protection - A boost converter includes a voltage output terminal, a power transistor, and short circuit protection circuitry. The voltage output terminal is configured to provide a boosted output voltage generated by the boost converter. The power transistor is configured to draw current through an inductor. The short circuit protection circuitry is configured to control current flow through the inductor responsive to detection of a short circuit at the voltage output terminal. The short circuit protection circuitry includes an output switch coupled to an input terminal of the power transistor and connected to the voltage output terminal. The output switch is configured to switch current flow from the inductor to the voltage output terminal. The output switch is a negative (N) channel metal oxide semiconductor field effect transistor (MOSFET). | 2019-10-10 |
20190312506 | DIRECT CONDUCTION CONTROL FOR POWER FACTOR CORRECTION CIRCUIT - A system includes a switching power supply that includes switch devices configured to provide a regulated output voltage based on an input voltage. A controller is configured to control the switch devices based on a power demand signal. A direct conduction avoidance circuit is configured to provide a direct conduction avoidance signal based on the regulated output voltage exceeding a direct conduction threshold voltage. The direct conduction avoidance signal is combined with a compensation signal to provide the power demand signal to the controller. An override circuit is configured to disable the direct conduction avoidance circuit based on the input voltage of the switching power supply being below an override threshold voltage. | 2019-10-10 |
20190312507 | CURRENT SENSING FOR BRIDGELESS PFC CONVERTERS - Bridgeless PFC converters. Example embodiments are methods of operating a power converter including operating the power converter during a positive half-line cycle of an alternating current (AC) source by: charging an inductance through a low-side switch with a first charging current having a first polarity; measuring the first charging current using a low-side current transformer (CT), while shorting a secondary winding of a high-side CT; and discharging the inductance through a high-side switch with a first discharging current having the first polarity. Operating the power converter during a negative half-line cycle of the AC source by: charging the inductance through the high-side switch with a second charging current having a second polarity; measuring the second charging current using the high-side CT, while shorting a secondary winding of the low-side CT; and discharging the inductance through the low-side switch with a second discharging current having the second polarity. | 2019-10-10 |
20190312508 | METHODS AND SYSTEMS OF BRIDGELESS PFC CONVERTERS - Bridgeless PFC converters. At least some example embodiments are methods of operating a power converter, including operating the power converter during a positive half-line cycle of a frequency of an alternating current (AC) source by: charging a primary winding of a multi-winding boost inductor with a charging current having a first polarity; and then discharging the primary winding; sensing a falling edge of a voltage at a switch node by way of a secondary winding of the multi-winding boost inductor; and triggering a subsequent charging of the primary winding during the positive half-line cycle based on the falling edge. Operating the power converter during a negative half-line cycle of the line frequency by: sensing a rising edge of the voltage at the switch node by way of the secondary winding; and triggering a subsequent charging of the primary winding. | 2019-10-10 |
20190312509 | CHARGING APPARATUS FOR ELECTRIC VEHICLE - A charging apparatus for an electric vehicle is provided. The apparatus includes an AC power input terminal receiving one AC input power from among single-phase AC power and multi-phase AC power. A power factor corrector having full bridge circuits receives the AC input power through the AC power input terminal. A link capacitor is charged through the power factor corrector. A first switch connects any one of an AC power input line and a neutral line of the AC power input terminal to the power factor corrector and a second switch selectively connects the AC power input terminal to the power factor corrector, or the link capacitor. The power factor corrector and the switch network operate based on a condition of received AC input power. The second switch includes a third switch and a fourth switch that connect each full bridge circuit to a positive battery electrode. | 2019-10-10 |
20190312510 | CONVERTER DEVICE, MOTOR DRIVE DEVICE, REFRIGERATOR, AIR CONDITIONER, AND HEAT-PUMP WATER HEATER - A converter device includes a rectifier circuit to rectify an AC voltage output from an AC power supply, a booster circuit including a plurality of reactors, a plurality of switching elements, and a plurality of backflow prevention elements to boost an output voltage of the rectifier circuit, a smoothing capacitor to smooth an output voltage of the booster circuit, a bus-current detection circuit to detect a value of a current that flows between the rectifier circuit and the booster circuit, a first filter circuit having a first filter time constant, a second filter circuit having a second filter time constant shorter than the first filter time constant, and a control unit to control an operation of the switching elements as a current value detected by the bus-current detection circuit is input to the control unit via the first filter circuit and the second filter circuit. | 2019-10-10 |
20190312511 | ASYMMETRIC SWITCHING CAPACITOR REGULATOR - The present disclosure provides an asymmetric switching capacitor regulator that is capable of providing an output voltage, covering a wide voltage range, with a high efficiency. The disclosed switching capacitor regulator is configured to generate a wide range of an output voltage by differentiating a voltage across one or more switching capacitors from a voltage across the rest of the switching capacitors in the switching capacitor regulator. | 2019-10-10 |
20190312512 | POWER CONVERSION DEVICE AND CONTROL CIRCUIT - A power conversion device according to one or more embodiments may include: a microcomputer; and an output circuit controlled by the microcomputer, including an output unit that converts an input power into a predetermined power and outputs the predetermined power, an internal power source that supplies a power source to the microcomputer, a driver that drives the output unit by a signal from the microcomputer, and a microcomputer stop transition unit that, when an operation of the power conversion device is stopped, outputs a microcomputer stop signal to the microcomputer and causes an operation of the microcomputer to transition to a stop state. In one or more embodiments, after the microcomputer stop transition unit causes the operation of the microcomputer to transition to a stop state, the microcomputer or the output circuit may stop an output of the internal power source. | 2019-10-10 |
20190312513 | MAGNETIC SENSING SCHEME FOR VOLTAGE REGULATOR CIRCUIT - Various embodiments provide a magnetic sensing scheme for a voltage regulator circuit. The voltage regulator circuit may include a first inductor (also referred to as an output inductor) coupled between a drive circuit and an output node. The voltage regulator circuit may further include a second inductor (also referred to as a sense inductor) having a first terminal coupled to the first inductor at a tap point between terminals of the first inductor. The second inductor may provide a sense voltage at a second terminal of the second inductor. A control circuit may control a state of the voltage regulator circuit based on the sense voltage to provide a regulated output voltage at the output node. Other embodiments may be described and claimed. | 2019-10-10 |
20190312514 | EFFICIENT BUCK-BOOST CHARGE PUMP AND METHOD THEREFOR - A buck-boost charge pump includes a flying capacitor and a switch network. The switch network couples an input terminal to a first terminal of the flying capacitor using a first double switch and the second terminal of the flying capacitor to a power supply voltage terminal using a second switch in a charging phase of a boost mode, the input terminal to the second terminal of the flying capacitor using a third switch and the first terminal of the flying capacitor to an output terminal using the fourth switch in both a discharging phase of the boost mode and a charging phase of a buck mode, and the power supply voltage terminal to the first terminal of the flying capacitor using a first switch and the second terminal of the flying capacitor to the output terminal using a second double switch in a discharging phase of the buck mode. | 2019-10-10 |
20190312515 | COMPOSITE EMBEDDED VOLTAGE REGULATOR (CEVR) - A system and method are provided for supplying bulk current to a voltage regulator embedded on a system-on-chip (SoC). An embedded voltage regulator (EVR) supplies a regulated voltage to a functional unit, the current demand is determined, and a current control signal is generated. An off-SoC bulk current source accepts the current control signal and supplies auxiliary (bulk) current to the functional unit in response to the current control signal. For example, in a first period of time a dynamic increase demand for a first current. Initially the EVR supplies the first current and creates an increase in SoC thermal loading. Subsequently, the EVR supplies a current less than the first current while the bulk current source supplies the bulk of the current. As a result, the bulk current source creates an off-SoC thermal load. | 2019-10-10 |
20190312516 | MULTIPLE PARALLEL-CONNECTED RESONANT CONVERTER, INDUCTOR-INTEGRATED MAGNETIC ELEMENT AND TRANSFORMER-INTEGRATED MAGNETIC ELEMENT - A multiple parallel-connected resonant converter, an inductor-integrated magnetic element and a transformer-integrated magnetic element are provided. The multiple parallel-connected resonant converter includes a first and a second converters. The first converter having a first input and output end includes a first inductor, a first transformer and a first capacitor connected in series. The second converter having a second input and output end includes a second inductor, a second transformer and a second capacitor connected in series. The second output end is connected with the first output end in parallel. The first and second inductor are integrated in a first magnetic element, the first magnetic element includes a first and second side column, and a first and second central column. The first inductor includes a first coil positioned around the first central column and the second inductor includes a second coil positioned around the second central column. | 2019-10-10 |
20190312517 | MULTIPLE PARALLEL-CONNECTED RESONANT CONVERTER, INDUCTOR-INTEGRATED MAGNETIC ELEMENT AND TRANSFORMER-INTEGRATED MAGNETIC ELEMENT - A multiple parallel-connected resonant converter, an inductor-integrated magnetic element and a transformer-integrated magnetic element are provided. The multiple parallel-connected resonant converter includes a first and a second converters. The first converter having a first input and output end includes a first inductor, a first transformer and a first capacitor connected in series. The second converter having a second input and output end includes a second inductor, a second transformer and a second capacitor connected in series. The second output end is connected with the first output end in parallel. The first and second inductor are integrated in a first magnetic element, the first magnetic element includes a first and second side column, and a first and second central column. The first inductor includes a first coil positioned around the first central column and the second inductor includes a second coil positioned around the second central column. | 2019-10-10 |
20190312518 | CURRENT-TO-VOLTAGE POWER CONVERTER - A current fed power supply circuit, a method for producing DC voltages from a current source, and a power delivery system are provided herein. One embodiment of a current fed power supply circuit includes: (1) input terminals, (2) an energy storage device having a first end coupled to the input terminals, (3) power switching circuitry coupled to a second end of the energy storage device and including a transformer having a primary winding and a plurality of secondary windings, and (4) multiple output terminals that are each uniquely coupled to one of the plurality of secondary windings, wherein the power switching circuitry converts a current received at the input terminals to a plurality of regulated voltages at the multiple output terminals. | 2019-10-10 |
20190312519 | ISOLATED DC/DC CONVERTER, CONTROL UNIT FOR ISOLATED DC/DC CONVERTER, AND DC/AC CONVERTER - An isolated DC/DC converter includes: DC/AC converter; an isolation transformer; a rectifier circuit; and a control unit. The control unit includes a DC input power calculation unit that calculates a DC input power of the DC/AC converter; a first adjustment unit that calculates a DC input power command value such that a DC output voltage detection value follows a DC output voltage command value; an input power limit unit that limits an upper limit value of the DC input power command value to a predetermined value and output the DC input power command value; a second adjustment unit that calculates a DC output power command value such that a DC input power calculation value follows the DC input power command value; and a drive pulse generation unit that generates drive pulses for semiconductor switching device based on the DC output power command value. | 2019-10-10 |
20190312520 | SWITCHING POWER SUPPLY DEVICE - In a switching power supply device, a snubber circuit includes a snubber capacitor, a FET, and a snubber inductor. The snubber capacitor stores therein surge power due to a reverse recovery time of FETs. The FET discharges the surge power stored in the snubber capacitor. The snubber inductor is provided in a stage following the FET. The controller controls an actual on-duty at which the FET of the snubber circuit is turned on based on the surge power. The controller can set an on-duty lower limit indicating the lower limit of the actual on-duty. The on-duty lower limit is smaller than the actual on-duty set for the FET in a continuous current mode in which an electric current flowing through the snubber inductor continuously flows and larger than 0. | 2019-10-10 |
20190312521 | DUAL VOLTAGE AND CURRENT LOOP LINEARIZATION CONTROL AND VOLTAGE BALANCING CONTROL FOR SOLID STATE TRANSFORMER - This invention relates to a method of controlling a Solid State Transformer (SST). The method comprises dividing a dual active bridge (DAB) power reference on a Low Voltage (LV) side Direct Current (DC) link voltage to obtain a total DAB reference current; dividing the total DAB current reference by N number of DAB modules to obtain a reference current for each DAB module; in response to SST being in a normal power regulation, determining a deviation of a capacitor voltage at the HV side of each of a k DAB modules with reference from an average voltage from the HV DC bus; determining a current adjustment signal for each of the k DAB modules based on the total DAB reference current and a corresponding deviation of the capacitor voltage of each of the k DAB modules; adding a saturated current adjustment signal together with the reference current for each of the k DAB modules to obtain a total current reference for each of the k DAB modules; and subtracting a sum of the total current reference of each of the k DAB modules from the total DAB reference current to determine a total current reference for an N | 2019-10-10 |
20190312522 | Bus Bar Structure and Power Conversion Apparatus Using the Same - A power conversion apparatus PWCS includes a smoothing capacitance element Cxp connected between a positive terminal and a negative terminal of a power source and configured to smooth a voltage change superimposed on a DC voltage, a switching circuit SWC converting the DC voltage into an AC voltage, a first bus bar BSB | 2019-10-10 |
20190312523 | POWER CONVERTING APPARATUS AND HOME APPLIANCE INCLUDING THE SAME - A power converting apparatus and a home appliance having the same according to the present invention includes: an input unit including an AC connection unit which receives an alternating current (AC) power from an external and a DC connection unit which receives a direct current (DC) power; a DC terminal voltage detection unit which detects a voltage of a DC terminal; a heater which is driven based on a voltage of the DC terminal; and a heater power supply unit supplies a voltage having a different magnitude to the heater according to a voltage detected by the DC terminal voltage detection unit, so that the home appliance and the heater can be commonly used for both the DC power and the AC power. | 2019-10-10 |
20190312524 | CONVERTER - A converter, configured to be connected between a direct current system and an alternating current system for mutual conversion between a direct current and an alternating current, includes a switching network, a filter, and a control unit. The switching network includes a first switching circuit and a second switching circuit. The first switching circuit includes M energy storage elements and M bridge arm circuits, one of the M bridge arm circuits includes one full-controlled component, and remaining M-1 bridge arm circuits each include two full-controlled components that are reversely connected in series. The second switching circuit includes N energy storage elements and N bridge arm circuits, one of the N bridge arm circuits includes one full-controlled component, and remaining N-1 bridge arm circuits each include two full-controlled components that are reversely connected in series. | 2019-10-10 |
20190312525 | NON-CONTACT FEEDING DEVICE - A power transmission device of the non-contact feeding device includes the transmission coil that supplies power to a power receiving device, a power supply circuit that supplies AC power obtained by boosting or stepping down the input voltage to the transmission coil, a voltage detection circuit that measures the voltage input to the power supply circuit, and a control circuit that controls a degree of boosting or step-down with respect to the input voltage by the power supply circuit according to the input voltage measured. The power receiving device includes a resonance circuit including a receiving coil that receives the power from the power transmission device and a resonance capacitor that resonates with the receiving coil according to the power from the power transmission device and a rectifier circuit that rectifies the power output from the resonance circuit. | 2019-10-10 |
20190312526 | POWER CONVERSION DEVICE AND PHOTOVOLTAIC MODULE INCLUDING THE SAME - A power conversion device includes a coupled inductor having a first inductor and second inductor, connected to a DC source; a full-bridge switching unit including a first leg having a first switching element and a second switching element serially connected to the first switching element, and a second leg having a third switching element and a fourth switching element serially connected to the third switching element, wherein the first leg connected to the first inductor and the second leg connected to the second inductor; a transformer connected to the full-bridge switching unit; a third inductor connected in parallel with the transformer; and a storage capacitor connected to the full-bridge switching unit. | 2019-10-10 |
20190312527 | DC-AC CONVERTER AND METHOD OF DC-AC CONVERSION - DC-AC converter and a method of performing the same. The converter has a DC-DC stage, a DC-AC stage, a positive rail and a negative rail which extend in parallel from the DC-DC stage to the DC-AC stage; and a controller, which is operable to control the DC-DC stage. The DC-DC stage has a first DC-DC stage switch, inductor, and second DC-DC stage switch connected in series in that order, and a zero rail extending in parallel to the positive rail and the negative rail. The DC-AC stage has a plurality of DC-AC stage switches connected between the positive rail and the negative rail and operable to produce the one or more phases of AC power at the output of the DC-AC stage. The DC-AC converter further comprises a neutral rail connected to the DC-DC stage zero rail and provides reference voltage for the one or more phases of AC power. | 2019-10-10 |
20190312528 | REPULSIVE-ATTRACTIVE-FORCE ELECTROSTATIC ACTUATOR - A repulsive-attractive-force electrostatic actuator according to some embodiments of the invention includes a first actuator layer including a first substrate, a first electrode pattern, and a second electrode pattern. The actuator further includes a second actuator layer including a second substrate, a third electrode pattern, and a fourth electrode pattern. The actuator further includes a first voltage source connected to the first and second electrode patterns such that the first electrode pattern is at a relative voltage of V1 to the second electrode pattern, and a second voltage source connected to the third and fourth electrode patterns such that the third electrode pattern is at a relative voltage of V2 to the fourth electrode pattern. The applied relative voltages V1 and V2 are selectable to provide one of a selected repulsive force or a selected attractive force between the first and second actuator layers. | 2019-10-10 |
20190312529 | ENERGY GENERATING SYSTEM WITH INTEGRATED ENERGY GENERATOR AND ENERGY STORAGE - Disclosed is an energy generating system having an integrated energy generator and energy storage. According to one embodiment, energy generation and storage may be performed using external kinetic energy, and output from a generator device may be improved using a voltage stored in the energy storage. A storage efficiency of the energy storage may be further increased via the improved output from the generator device. Further, the energy generator and energy storage may be integrated with each other to improve a space utilization. | 2019-10-10 |
20190312530 | Ultrasonic Actuator - A hollow-cylindrical ultrasonic actuator is disclosed a central axis, an inner peripheral surface facing the central axis and an outer peripheral surface facing away from the central axis and spaced apart from the inner peripheral surface, a closed inner contour curve, a closed outer contour curve, at least one electrode, and an electromechanical material provided between opposed electrodes. In a non-actuated state of the ultrasonic actuator, a curvature of the inner contour curve or of an outer contour curve includes at least three mutually spaced-apart local maximum points. | 2019-10-10 |
20190312531 | TRANSPARENT ENERGY HARVESTING DEVICE - A transparent energy harvesting device includes a transparent substrate and one or more patterned materials with feature sizes less than 10 micron, 5 micron, or even less than 2.5 micron, where such materials are comprised of piezoelectric, photovoltaic or thermoelectric materials. | 2019-10-10 |
20190312532 | POWER CONVERTING APPARATUS AND HOME APPLIANCE INCLUDING THE SAME - A power converting apparatus and a home appliance having the same according to the present invention includes: an input unit including an AC connection unit which receives an alternating current (AC) power from an external and a DC connection unit which receives a direct current (DC) power; a bridge diode unit which always outputs the DC power having a given polarity when DC power is connected to the input unit, and rectifies the AC power received through the input unit when the DC power is connected to the input unit; and a capacitor which is connected to a DC terminal which is an output terminal of the bridge diode unit. | 2019-10-10 |
20190312533 | Method and Apparatus for Commutation of Drive Coils in a Linear Drive System with Independent Movers - A motor controller is provided that executes a commutation routine in one of a plurality of operating modes to regulate current provided to drive coils in a linear motion system. The motor controller generated currents for each of the drive coils in a first operating mode to minimize the copper losses in the drive coils, in a second operating mode to maximize the force applied to the mover, in a third operating mode to provide balanced currents between the drive coils, and in a fourth operating mode to provide currents according to a selected operating point that combines characteristics of the first three operating points. The motor controller may also monitor each of the drive coils for saturation and redistribute at least a portion of the current required to control operation of the mover to the other drive coils when one of the drive coils is saturated. | 2019-10-10 |
20190312534 | MOTOR DRIVE DEVICE - According to an embodiment of the present invention, a control circuit of a motor drive device activates a first timer according to the rotational position of a motor, controls, on the basis of the time counted by the first timer, the on-timing of positive-side switching elements that constitute an inverter circuit, and energizes the motor. The control circuit also activates a second timer according to the on-timing, controls the off-timing of the positive-side switching elements, on the basis of the time counted by the second timer, sets negative-side switching elements of two opposing arms to be in an on-state to cause a reflux current to flow, and then changes an energization direction to the motor. When the rotational position is set to a position for activating the first timer before the on-timing, turning on of the positive-side switching elements and activation of the second timer, which are scheduled to be performed at the on-timing, are carried out. | 2019-10-10 |
20190312535 | Method for Adjusting an Amplitude of a Voltage Injection of a Rotating, Multi-Phase Electric Machine, which Electric Machine is Fed by Means of a PWM-Controlled Inverter - A method for adjusting an amplitude of a voltage injection of a rotating, multi-phase electric machine that is fed using a PWM-controlled inverter includes determining, at a first time, a predetermined current vector that would be present at the machine at a second time using a voltage equation of the machine based on a voltage predetermined in a controller for actuating the machine, a current vector determined from phase currents measured at the first time, and a speed of the machine. The method further includes determining a real current vector present at the machine at the second time based on phase currents of the machine measured at the second time and calculating a current vector difference between the predetermined current vector and the real current vector at the second time. The method further includes adjusting the amplitude of the voltage injection based on the calculated current vector difference. | 2019-10-10 |
20190312536 | MOTOR DRIVE DEVICE AND ELECTRIC POWER STEERING DEVICE - A motor drive device includes an inverter circuit, a first switching circuit to switch a path between a power supply and the inverter circuit to conduction and interruption, a second switching circuit to switch a path between the inverter circuit and the motor, a current detector to detect a current of the inverter circuit, a controller to, in a case in which a current value of the detected current is not within a predetermined range, output a command voltage which commands switching from the conduction to the interruption, a driver to boost the command voltage input from the controller and output the boosted command voltage to each switching circuit, and a delay circuit disposed between the second switching circuit and the driver to set a timing at which the command voltage is input to the second switching circuit to be later than a timing at which the command voltage is input to the first switching circuit. | 2019-10-10 |
20190312537 | Packet-Based Networking of Variable Frequency Drives - One or more Variable Frequency Drives (VFD) are connected to a packet network and the power transistor drive signals normally generated by the VFD to produce a desired Pulse Width Modulated (PWM) motor drive signal are generated by a software controller located in the packet network and transmitted to the VFD. The control of the VFDs can be (1) centralized using some centralized software controller communicating to the VFDs over the packet network, and/or (2) distributed, in which case VFDs can peer with each other over the packet network, to communicate control state. | 2019-10-10 |
20190312538 | MOTOR CONTROL APPARATUS, SHEET CONVEYANCE APPARATUS, DOCUMENT FEEDING APPARATUS, DOCUMENT READING APPARATUS, AND IMAGE FORMING APPARATUS - A motor control apparatus includes a detector configured to detect a drive current, a phase determiner configured to determine a rotation phase of a rotor of a motor, and a controller provided with a first control mode for controlling the motor by controlling the drive current flowing in a winding of the motor so as to reduce a deviation between an instructed phase and the rotation phase, and a second control mode for controlling the motor based on a current having a predetermined magnitude. The controller decelerates the rotor after switching a control mode for controlling the motor from the first control mode to the second control mode in a state where the rotor is being rotated at a predetermined speed based on the first control mode. | 2019-10-10 |
20190312539 | FIELD WINDING TYPE ROTATING ELECTRIC MACHINE - A field winding type rotating electric machine includes: a stator armature winding wound on a stator core; a rotor field winding wound on a rotor core; a rectifying element connected to both ends of the rotor field winding; a capacitor having one end connected to one end of the rectifying element and the other end connected between the two ends of the rotor field winding; and a control circuit configured to supply electric current, which includes a fundamental component for generating rotational torque and a harmonic component having a shorter period than the fundamental component and superimposed on the fundamental component, to the stator armature winding and thereby induce excitation current in the rotor field winding. Moreover, an inductance of the rotor field winding and a capacitance of the capacitor are in a resonant relationship with a frequency of the harmonic component. | 2019-10-10 |
20190312540 | METHOD AND APPARATUS FOR SOFT STARTING AND STOPPING A MOTOR - The device coupled between a grid and a motor can dynamically soft start and soft stop a motor without the motor experiencing any power surges or jerks. | 2019-10-10 |
20190312541 | ELECTRONIC CONTROL APPARATUS - An electronic control apparatus is used for a power supply system that includes a rotating electric machine, a power generation control unit, first and second storage batteries, first and second switches, and a host control unit. The electronic control apparatus determines whether a predetermined process completion condition is met, without communicating with the host control unit, after an ignition switch of a vehicle is switched from an on state to an off state. The process completion condition indicates that a predetermined switch-off process is completed. The switch-off process is performed by the power generation control unit after the ignition switch is switched from the on state to the off state. The electronic control apparatus maintains the first switch in on state until determined that the process completion condition is met after the ignition switch is switched from the on state to the off state. | 2019-10-10 |
20190312542 | MOTOR DRIVING DEVICE AND ABNORMAL HEAT GENERATION DETECTING METHOD FOR MOTOR DRIVING DEVICE - A motor driving device includes a heat sink, a rectifier provided on the heat sink and configured to rectify an AC voltage supplied from an AC power supply to a DC voltage, a charging resistor provided on the heat sink and configured to be used for charging a smoothing capacitor for smoothing the DC voltage rectified by the rectifier, and a temperature sensor with which the charging resistor is provided. | 2019-10-10 |
20190312543 | Photovoltaic Solar Array Support Structure - A photovoltaic solar panel array support structure that has a negligible footprint and that may be adjustably sized in the future to accommodate an increase or decrease of the number of solar panel arrays. It is installed at a substantial elevation above ground level so as to allow unhampered, ongoing farming activities in the area directly below the solar panel array, including the use of large mechanized farm equipment. The photovoltaic solar panel array support structure utilizes a series of vertical pilings that support a pre-fabricated unitary segment platform upon which a solar panel system may be mounted and then lifted atop of the pilings as a single assembly. It is intended for erection and operation in locations where large-scale ground mounted solar panel arrays are not feasible. | 2019-10-10 |
20190312544 | SUN TRACKING SOLAR SYSTEM - Provided is a sun tracking solar system, comprising a light focusing device and a solar energy utilization device. The system further comprises a drive mechanism ( | 2019-10-10 |
20190312545 | PHOTOVOLTAIC MODULE WITH A CROSS RAIL ASSEMBLY - One embodiment is a photovoltaic (PV) module including a frame to receive a perimeter of a backside of a photovoltaic (PV) laminate. The cross rail assembly may include: a conductive frame to receive a perimeter of a backside of a photovoltaic (PV) laminate; one or more conductive cross rail members provide structural rigidity to the conductive frame; and one or more pairs of couplers coupled to the conductive frame, wherein: at least one coupler comprises a grounding coupler having a first keyed section to insert into an opening in the conductive frame and a second keyed section to mate with an end of a conductive cross rail member of the one or more conductive cross rail members to ground the conductive cross rail member to the frame; or at least one coupler of at least one of the one or more pairs includes a length to define a cabling channel. | 2019-10-10 |
20190312546 | FASTENING STAPLE FOR A PHOTOVOLTAIC FRAMEWORK WITH MOUNTING BY INSERTION AND THEN SLIDING INTO A SLOT OF A SUPPORT WALL - A fastening staple adapted for fastening of a photovoltaic framework against a front face of a support wall comprises a bearing head and a counter-support foot constituting a jaw likely to transversely receive both a segment of the support wall and a segment of the photovoltaic framework. The counter-support foot comprises at least one bearing lateral flange positioned longitudinally so as to bear longitudinally against a rear face of the support wall when the photovoltaic framework and the support wall are transversely engaged in the jaw. The bearing head comprises at least one hooking element adapted to hook the photovoltaic framework in order to transversely immobilize the photovoltaic framework in the jaw. The bearing head and/or the counter-support foot comprises at least one mechanical tensioning flange where an elastic deformation and/or a displacement thereof, resulting from the action of transverse engagement of the photovoltaic framework segment and of the support wall segment in the determined interval between the bearing head and the counter-support foot, enables the bearing head and the counter-support foot to exert a longitudinal tightening of the photovoltaic framework and of the support wall in the jaw. | 2019-10-10 |
20190312547 | Internet of Things-Enabled Solar Photovoltaic Health Monitoring and Advising Related Thereto - Methods, systems, and computer program products are provided herein in connection with IoT-enabled solar PV health monitoring and advising related thereto. A computer-implemented method includes obtaining current-voltage samples corresponding to solar photovoltaic modules by triggering switch circuitry between (i) an inverter attributed to the solar photovoltaic modules and (ii) a current-voltage tracer; detecting one or more anomalies in the obtained current-voltage samples by applying machine learning techniques to the obtained current-voltage samples; automatically performing a root cause analysis on the detected anomalies by (i) converting the obtained current-voltage samples to sequential data, (ii) applying a sequence classifier to the sequential data, and (iii) identifying a pre-determined anomaly class comparable to the sequential data based on the application of the sequence classifier; and automatically generating and outputting a suggestion for remedial action based on the identified pre-determined anomaly class. | 2019-10-10 |
20190312548 | METHODS AND SYSTEMS FOR DETERMINING SOILING ON PHOTOVOLTAIC DEVICES - An aspect of the present disclosure relates to radiating light on to a front surface of a glass pane comprising a first surface and a second surface defining a thickness between the first surface and the second surface, wherein the first surface is substantially parallel to the second surface; detecting a transmittance of the light through the glass pane; comparing the transmittance through the glass pane to a reference transmittance value corresponding to a clean reference glass pane; and determining, using the transmittance and the reference transmittance, a soiling metric of a photovoltaic module. | 2019-10-10 |
20190312549 | SYSTEMS AND METHODS FOR A CURRENT SENSE AMPLIFIER COMPRISING A SAMPLE AND HOLD CIRCUIT - Described herein are systems and methods that reduce settling time in amplifier circuits, such as voltage sense amplifiers (VSA) or current sense amplifiers (CSA) circuits, that comprise a feedback path. When the feedback path is interrupted via a switch, a CSA circuit switches to open loop. A sample-and-hold circuit holds the output voltage of the amplifier, such that when a load is connected to the CSA circuit, the open loop settling time, which is shorter than the closed loop settling time, is allowed to pass before the CSA output voltage is measured, thereby, advantageously preventing any potential disturbance present at the CSA output from being fed back to the CSA input. | 2019-10-10 |
20190312550 | RECEIVER CIRCUIT - A receiver circuit receives a signal from a semiconductor device. The receiver circuit includes an input buffer including a first plurality of transistors, the input buffer being configured to detect a fabrication condition of the receiver circuit, generate a control signal according to the detected fabrication condition, and control a gain of an input signal by adjusting a number of operating transistors among the first plurality of transistors in response to the control signal; and a latch circuit configured to latch an output signal of the input buffer, and adjust threshold voltages of a second plurality of transistors in response to a test signal. | 2019-10-10 |
20190312551 | AMPLIFIER OFFSET AND COMPENSATION - An apparatus includes a first amplifier, a second amplifier, and a compensation-setting generator to generate a first amplifier compensation setting and second amplifier compensation setting. A controller is operable to: i) apply the first amplifier compensation setting to the first amplifier and apply the second amplifier compensation setting to the second amplifier. The controller is further operable to switch between generating updates to the first amplifier compensation setting and the second amplifier compensation setting. | 2019-10-10 |
20190312552 | DOHERTY POWER AMPLIFIER CIRCUIT - A Doherty power amplifier circuit having a main power amplification device, an auxiliary power amplification device arranged in parallel with the main power amplification device, and a load modulation circuit comprising a harmonic injection circuit connected with respective outputs of the main power amplification device and the auxiliary power amplification device. The harmonic injection circuit is arranged to transfer harmonic components generated at the main power amplification device to the auxiliary power amplification device and harmonic components generated at the auxiliary power amplification device to the main power amplification device, when both the main and auxiliary power amplification devices are operating, for modulating the respective outputs of the main power amplification device and the auxiliary power amplification device. | 2019-10-10 |
20190312553 | RADIO FREQUENCY (RF) INTEGRATED CIRCUIT PERFORMING SIGNAL AMPLIFICATION OPERATION TO SUPPORT CARRIER AGGREGATION AND RECEIVER INCLUDING THE SAME - A receiver includes an amplification block supporting carrier aggregation (CA). The amplification block includes a first amplifier circuit configured to receive a radio frequency (RF) input signal at a block node from an outside source, amplify the RF input signal, and output the amplified RF input signal as a first RF output signal. The first amplifier circuit includes a first amplifier configured to receive the RF input signal through a first input node to amplify the RF input signal, and a first feedback circuit coupled between the first input node and a first internal amplification node of the first amplifier to provide feedback to the first amplifier. | 2019-10-10 |
20190312554 | POWER AMPLIFIER CIRCUIT - A power amplifier circuit is capable of restraining uneven temperature distribution among a plurality of unit transistors while restraining the deterioration of the characteristics of the power amplifier circuit. The power amplifier circuit includes: a first transistor group which includes a plurality of unit transistors and which amplifies an input signal and outputs an amplified signal; a bias circuit which supplies a bias current or a bias voltage to a base or a gate of each unit transistor of the first transistor group; a plurality of first resistive elements, each of which is connected between the base or the gate of each unit transistor of the first transistor group and an output of the bias circuit; and a plurality of second resistive elements, each of which is connected between an emitter or a source of each unit transistor of the first transistor group and a reference potential. | 2019-10-10 |
20190312555 | COST EFFECTIVE HYBRID PROTECTION FOR HIGH POWER AMPLIFIER - An RF generation system is provided for an electromagnetic cooking device having a cavity. The system includes: a signal generator for generating an input RF signal; an RF feed configured to introduce electromagnetic radiation into the cavity and to receive reflected electromagnetic radiation from the cavity; and a high-power amplifier coupled between the signal generator and the RF feed. The high-power amplifier including an amplifying stage configured to output a signal that is amplified in power, and a circulator for directing the amplified output signal to the RF feed and for redirecting any reflected radiation received from the RF feed to a dummy load. The system further includes a hardware protection component for detecting backward power in the reflected radiation and for reducing power supplied to the amplifying stage if the backward power exceeds a power threshold within a time scale that prevents damage to the circulator. | 2019-10-10 |
20190312556 | SINGLE KNOB PRE-AMPLIFIER GAIN-TRIM AND FADER - According to a first aspect of the embodiments, a microphone mixer is provided comprising: an input adapted to receive differential microphone (mic) output signals; a gain-trim circuit adapted to receive the differential mic output signals, and which includes a substantially fully differential amplifier adapted to amplify the received differential mic output signals through use of a gain-trim output adjustment device that provides a variable gain amount ranging from a first gain-trim gain value to a second gain-trim gain value, to produce differential gain-trim circuit output signals; a fader circuit adapted to receive the differential gain-trim circuit output signals, and which includes a differential amplifier adapted to attenuate the received differential gain-trim circuit output signals through use of a fader output adjustment device that provides a variable gain amount ranging from a first fader gain value to a second fader value; and a common adjustment apparatus that mechanically ties the gain-trim output adjustment device with the fader output adjustment device such that the first gain-trim gain value and first fader gain value are obtained substantially simultaneously at a first position of the common adjustment apparatus, and the second gain-trim gain value and second fader gain value are obtained substantially simultaneously at a second position of the common adjustment apparatus. | 2019-10-10 |
20190312557 | WIDE-BAND AMPLIFIERS USING CLIPPER CIRCUITS FOR REDUCED HARMONICS - The present invention breaks up the frequency bands which can be filtered by a simple low-loss band-pass or low pass filter. The second harmonic frequency is reduced by use of a non-linear clipper element which controls the driving waveform symmetry and can reduce the harmonics by as much as 5-15 db which makes the filter much simpler and allows the amplifier to remain wide-band. The output waveform from the amplifier is symmetrical or nearly symmetrical. | 2019-10-10 |
20190312558 | AMPLIFIER CIRCUIT AND OPTICAL TRANSCEIVER - An amplifier circuit includes a first amplifier including input terminals and configured to amplify a signal, the signal being input into one of the input terminals; a second amplifier into which positive and negative outputs of the first amplifier are each input; a first low-pass filter into which outputs of the second amplifier are input; a high-pass filter into which outputs of the first amplifier are input; a second low-pass filter into which outputs of the high-pass filter are input; and a difference circuit configured to output a difference between outputs of the first low-pass filter and outputs of the second low-pass filter, wherein an output of the difference circuit is input into another one of the input terminals of the first amplifier. | 2019-10-10 |
20190312559 | ELASTIC WAVE DEVICE MANUFACTURING METHOD, ELASTIC WAVE DEVICE, RADIO-FREQUENCY FRONT-END CIRCUIT, AND COMMUNICATION DEVICE - An elastic wave device manufacturing method includes a preparing a piezoelectric wafer on which IDT electrodes are provided in elastic wave device forming portions, providing on a first main surface of the piezoelectric wafer support layers in the elastic wave device forming portions, bonding a cover member to cover the support layers to obtain a multilayer body, cutting the multilayer body in a first direction multiple times, cutting the multilayer body in a second direction orthogonal to the first direction to obtain elastic wave devices, in which a resin layer extends across a boundary between the elastic wave device forming portions adjacent to each other on the first main surface of the piezoelectric wafer, and the second cutting step is performed in a state in which the resin layer is present. | 2019-10-10 |
20190312560 | Tunable Passive Enhance Q Microwave Notch Filter - A tunable notch filter comprising a transmission line, a tunable bandstop filter and a tunable bandpass filter. The transmission line has an input port, an output port and a length electrically connecting the input port to the output port and receiving an RF signal at the input port. The tunable bandstop filter comprises a first direct current voltage source, a first coupling line and a first tunable capacitor. The first direct current voltage source provides a first adjustable voltage to the first tunable capacitor. The first tunable capacitor adjusts its capacitance based on the first adjustable voltage. The tunable bandpass filter comprises a second direct current voltage source, a second coupling line and a second tunable capacitor. The second direct current voltage source provides a second adjustable voltage to second tunable capacitor. The second tunable capacitor adjusts its capacitance based on the second adjustable voltage. | 2019-10-10 |
20190312561 | RF SIGNAL AMPLIFIER WITH COMBINED ACTIVE AND PASSIVE PORT - The present invention is directed to a bi-directional RF signal amplifier that includes both an active communications path and a passive communications path. The circuitry is simplified and the housing size is reduced by having one port which functions as part of the active communications path when the bi-directional RF signal amplifier is powered, and that functions as part of the passive communications path when the bi-directional RF signal amplifier is unpowered. | 2019-10-10 |
20190312562 | PIEZOELECTRIC RESONATOR DEVICE - A crystal resonator ( | 2019-10-10 |
20190312563 | ACOUSTIC WAVE DEVICE, RADIO FREQUENCY FRONT-END MODULE, AND COMMUNICATION DEVICE - An acoustic wave device includes a first and second element substrates each having piezoelectricity, and bonding layers bonding the first and second element substrates to each other. First and second IDT electrodes and first and second wiring electrodes are respectively provided on the first and second element substrates. The first and second wiring electrodes are disposed one above the other with the bonding layer interposed therebetween to define a wiring electrode overlapped portion. In each of the wiring electrode overlapped portions, the first wiring electrode and the second wiring electrode are provided in one of combinations in which one wiring electrode is a signal wiring electrode and the other wiring electrode is a ground wiring electrode, both of the wiring electrodes are ground wiring electrodes, and both of the wiring electrodes are signal wiring electrodes at the same potential. | 2019-10-10 |
20190312564 | MULTIPLEXER, RADIO-FREQUENCY FRONT END CIRCUIT, AND COMMUNICATION DEVICE - A multiplexer includes a common terminal, a first band pass filter that is connected to the common terminal and has a first pass band, and a second band pass filter that is connected to the common terminal and has a second pass band located at higher frequencies than the first pass band. The first band pass filter includes an acoustic wave device that includes a support substrate, a piezoelectric body stacked on the support substrate, and an IDT electrode provided on the piezoelectric body. The piezoelectric body is made of lithium niobate. The acoustic wave device utilizes Rayleigh waves. | 2019-10-10 |
20190312565 | CRYSTAL RESONATOR DEVICE - In a crystal oscillator, a crystal resonator and an IC chip are hermetically sealed in a package. The crystal resonator includes: a crystal resonator plate including a first excitation electrode formed on a first main surface, and a second excitation electrode, which makes a pair with the first excitation electrode, formed on a second main surface; a first sealing member covering the first excitation electrode of the crystal resonator plate; and a second sealing member covering the second excitation electrode of the crystal resonator plate. A vibrating part including the first excitation electrode and the second excitation electrode of the crystal resonator plate is hermetically sealed by bonding the first sealing member to the crystal resonator plate, and the second sealing member to the crystal resonator plate. | 2019-10-10 |
20190312566 | CRYSTAL DEVICE AND ELECTRONIC APPARATUS USING THIS CRYSTAL DEVICE - A crystal device includes a rectangular shaped substrate, a mounting frame which is along an outer circumferential edge of a lower surface of the substrate on its short-side sides and configures a recessed part, electrode pads on an upper surface of the substrate, connection pads on the lower surface of the substrate in the mounting frame, a crystal element mounted on the electrode pads, a temperature sensing element mounted on the connection pads, and a lid air-tightly sealing the crystal element. The electrode pads and the recessed part do not overlap in a plane perspective view. | 2019-10-10 |
20190312567 | Removable System and Method for Dentures and Surgical Guides - A removable system and method for helping position and stabilize implant supported dentures during the healing process after surgery is provided, wherein a removable system comprises a soft tissue supported provisional denture structure configured to help position and stabilize the provisional denture during the transfer of the implant positions to the provisional denture. In the surgical process of providing implant-supported dentures, immediately after the implants are surgically implanted, adhesive is applied to the underside of the provisional denture, and implant connectors are seated on the implants. The provisional denture is seated in the patient's mouth wherein the soft tissue supported provisional denture structure helps stabilize and position the denture. The implant connectors adhere to the adhesive and transfer the implant positions to the provisional denture. | 2019-10-10 |
20190312568 | MULTIPLEXER - A multiplexer includes: a substrate having a surface; another substrate having another surface facing the surface across an air gap; a filter that is located on the surface, and includes first series resonators in a first series pathway from a common terminal to a terminal, and first parallel resonators in first parallel pathways; another filter that is located on the another surface, and includes second series resonators in a second series pathway from the common terminal to another terminal, and second parallel resonators in second parallel pathways, a second parallel resonator closest to the another terminal and a second series resonator closest to the another terminal not overlapping with the first series pathway, at least a part of the second parallel pathways overlapping with at least a part of first pathways between the first series pathway and the first parallel resonators, the first parallel resonators, and the first series pathway. | 2019-10-10 |
20190312569 | A Type of Ultra-wide Band SAW Filter - The present invention discloses a type of ultra-wide band SAW filter which comprises a first SAW resonator group and a second SAW resonator group that are connected to form a ladder structure. Each SAW resonator in the said first SAW resonator group has the same film thickness; each SAW resonator in the said second SAW resonator group has the same film thickness; the film thickness of each SAW resonator in the said first SAW resonator group is the same as or different from the film thickness of each SAW resonator in the said second SAW resonator group. The SAW filter according to the present invention can realize the pass-band non-parasitic mode response and is a high-performance ultra-wide band filter with a bandwidth of 6-20% of the center frequency and an insertion loss of less than 2 dB, and the present invention features small size, low cost and a broad application prospect in the field of military and civilian communications equipment. | 2019-10-10 |
20190312570 | FILTER AND METHOD FOR ADJUSTING PERFORMANCE OF FILTER - Embodiments of this application provide a filter and a method for adjusting performance of a filter, so as to quickly adjust performance of a filter. The filter includes at least two acoustic wave resonators; and a performance adjustment structure, connected to an output end of a first acoustic wave resonator and an input end of a second acoustic wave resonator, where the first acoustic wave resonator and the second acoustic wave resonator are any two of the at least two acoustic wave resonators, the performance adjustment structure includes a capacitor structure and/or an inductor structure, and the performance adjustment structure is configured to adjust an energy coupling mode between the first acoustic wave resonator and the second acoustic wave resonator. | 2019-10-10 |
20190312571 | Joint Optimization of FIR Filters in a Non-Linear Compensator - A mechanism is included for jointly determining filter coefficients for Finite Impulse Response (FIR) filters in a Linear, Memory-less Non-linear (LNL), Linear compensator. Calibration signals are applied to a signal converter input in a test and measurement system. Non-linear signal components are determined in signal output from the signal converter. Non-linear filter components are determined at the LNL compensator based on the calibration signals. The non-linear signal components are then compared to the non-linear filter components. The comparison is then resolved to determine filter coefficients for first stage Finite Impulse Response (FIR) filters and second stage FIR filters in the LNL. | 2019-10-10 |