52nd week of 2017 patent applcation highlights part 64 |
Patent application number | Title | Published |
20170373562 | Thermodynamic system - The invention relates to a thermodynamic system ( | 2017-12-28 |
20170373563 | Motor - The present invention provides a motor that comprises: a housing: a stator that is included in the housing and around which a coil is wound; a rotor coupled to the inside of the stator; a shaft coupled to the rotor; and a bus bar-terminal assembly that includes a bus bar that includes a connection terminal connected with the coil and a terminal connected with an external power supply and a body that includes the bus bar therein such that the connection terminal and the terminal protrude to the outside, wherein the bus bar-terminal assembly includes an alignment guide part provided on the outer circumferential surface of the body in the height direction and slide-coupled with the inner circumferential surface of the housing. Therefore, the present invention provides an advantageous effect of increasing the assembly efficiency of the motor and reducing the number of components thereof by configuring the terminal of the bus bar and the terminal-housing assembly as a single component and an advantageous effect of easily securing the alignment position by providing the alignment guide part on the outer circumferential surface of the bus bar-terminal assembly and installing a slot or rib at the inside of the housing to correspond to the alignment guide part. | 2017-12-28 |
20170373564 | ELECTRIC MOTOR WITH HARMONIC SHUNTING - Disclosed is a hermetic AC electric motor that includes harmonics shunting such that high frequency harmonics are shunted from the AC electric motor without the use of one or more high frequency filters in the associated motor drive. A related method of operating an AC electric motor includes shunting high frequency harmonics to a fluid passing through the AC electric motor. Also disclosed is a simplified variable speed motor drive system which eliminates the need for a filter for removing high frequency harmonics. | 2017-12-28 |
20170373565 | ELECTRIC MOTOR AND METHOD OF MANUFACTURING THE ELECTRIC MOTOR - An electric motor, particularly an engine of a motor vehicle, has a temperature sensor for monitoring the operating temperatures of a winding. The temperature sensor is inserted through a radial through-hole at the periphery of the insulation element into a recess which is delimited between a shaped-out portion on the corresponding projection of the insulation element and the winding. The shaped-out portion has a slope so that a translational displacement of the temperature sensor at the same time leads to an increase in the biasing force of the temperature sensor with respect to the winding. It is thus possible to ensure the desired pre-tension force, and therefore a reliable contact surface between the temperature sensor and the winding, as a result of the connecting force and, at the same time, secure the temperature sensor with force fit in the shaped-out portion. | 2017-12-28 |
20170373566 | POWER SUPPLY TERMINAL STRUCTURE AND METHOD FOR ASSEMBLING MOTOR - A power supply terminal structure includes: a circuit board; and a power supply terminal having a pair of terminal parts projected from the circuit board. The pair of terminal parts has: a retaining part that retains by clamping a terminal of a motor; a guide part located above the retaining part; and an elastic deformation part located below the retaining part. An interval between tip ends of the pair of terminal parts is increased as extending upward, and the guide part is displaced to increase the interval when the terminal of the motor is retained by the retaining part. The elastic deformation part is elastically deformable to displace a tip end of the guide part, and is curved to protrude in the width direction. The pair of terminal parts is separated from a convex part of the motor in a retaining state. | 2017-12-28 |
20170373567 | ELECTRONIC DEVICE - An electronic device is downsized while suppressing performance degradation of the electronic device. In the electronic device, a power module including a power transistor is arranged in a first region on a back surface of a through hole board having a plurality of through hole vias having different sizes while a pre-driver including a control circuit is arranged in a second region on a front surface of the board. In this case, in a plan view, the first region and the second region have an overlapping region. The power module and the pre-driver are electrically connected to each other via a through hole via. The plurality of through hole vias include a through hole via having a first size, a through hole via which is larger than the first size and in which a cable can be inserted, and a through hole via in which a conductive member is embedded. | 2017-12-28 |
20170373568 | Drive Mechanism Including Brushed Motor - A drive mechanism including a brushed motor comprises a brushed motor including a commutator having a plurality of commutator segments and a brush contactable to the plurality of commutator segments, a movable member driven by the brushed motor, and a stopper member configured to stop rotation of the brushed motor by contacting the movable member. In a state in which the movable member contacts the stopper member to thereby stop the rotation of the brushed motor, the brush contacts only one of two adjacent commutator segments of the plurality of commutator segments. | 2017-12-28 |
20170373569 | ROTOR, MANUFACTURING METHOD OF THE ROTOR, AND MOTOR - A rotor, which includes a rotor main body and a fan. The rotor main body includes a rotor core, a rotary shaft extending through the rotor core, and a permanent magnet mounted in the rotor core. The fan includes a plurality of fixing portions embedded in the rotor main body and configured to fix the permanent magnet. The rotor has a simple structure, can be easily assembled, and has a low cost. | 2017-12-28 |
20170373570 | STATOR MANUFACTURING APPARATUS AND STATOR MANUFACTURING METHOD - A stator manufacturing apparatus includes an insertion tool that is insertable into a stator core and being configured to dispose a pair of side parts of a stator coil in two holding grooves. A pressing tool has plate-like pushers arranged to correspond to the positions of the holding grooves. The pressing tool pushes out the side parts of the stator coils and inserts the side parts into the corresponding slots. A pair of shaping tools face coil end parts of the stator coils. A plurality of slits through which the pushers are insertable are provided in a principal surface of each shaping tool. A shaping tool moving unit shapes the coil end parts by pressing the pair of shaping tools in an axial direction with the pushers inserted in each of the corresponding holding grooves. | 2017-12-28 |
20170373571 | MOTOR - A motor includes: a cylindrical housing that houses a rotor; a first member mounted to an opening of the housing; and a second member sandwiching the first member as mounted between the second member and the housing. The housing includes, at an end of the housing that faces the second member, a first locking part that locks a first locked part of the second member. The second member is elastically deformed by the first locking part and locked to the housing accordingly and is configured such that a gap is formed between the second member and the housing when the second member is locked to the housing. | 2017-12-28 |
20170373572 | ELECTRIC MOTOR AND MACHINE TOOL EQUIPPED WITH THE ELECTRIC MOTOR - To provide an electric motor enabling easy and high-precision balance correction even after operating over a long period, and a machine toll including this electric motor. An electric motor includes: a cylindrical stator; a rotor having a rotary shaft part inserted inside of the stator; a housing installed to both ends in an axial direction of the stator; a terminal box that is mounted to the housing and accommodates a terminal block; an opening provided so as to open within the terminal box through the housing, and disposed to be separated from a ventilation passage formed in the stator; and a first balance correction component that is installed to the rotary shaft part, and corrects balance of the rotor, in which the first balance correction component is exposed within the terminal box from the opening; and a machine tool includes this electric motor. | 2017-12-28 |
20170373573 | ELECTRIC MACHINE - An electric machine for a vehicle, comprising a stator, and a rotor comprising a plurality of poles, where each pole comprises a first V-shaped flux barrier and a second V-shaped flux barrier, where the first V-shaped flux barrier comprises two magnets with inner air cavities and outer air cavities, where the second V-shaped flux barrier comprises two magnets with inner air cavities and outer air cavities, and where the first and second V-shaped flux barriers are arranged adjacent each other and symmetrically to a d-axis of the rotor, where each of the poles further comprise a first V-shaped flux redirector arranged symmetrically to the d-axis and between the first V-shaped flux barrier and the second V-shaped flux barrier. | 2017-12-28 |
20170373574 | Vibration Motor - A vibration motor is disclosed. The vibration motor includes a housing; an elastic connecting piece accommodated in the housing; a fixed component; and a vibrating component suspended in the housing by the elastic connecting piece. One of the fixed component and the vibrating component includes a coil, and the other including a magnet. The vibration motor further includes a damping piece integrated with the elastic connecting piece. | 2017-12-28 |
20170373575 | HORIZONTAL LINEAR VIBRATION MOTOR - A horizontal linear vibration motor for securing the straightness of a coil spring and preventing a driving unit, such as a mass body, from axially rotating around the axis of a shaft within a housing due to the rotational property of the coil spring by providing a coil and a magnet for generating a force that enables the reciprocating motion of the driving unit including the mass body and an anti-rotation member provided in the driving unit to slide and come into contact with the housing. | 2017-12-28 |
20170373576 | TRANSVERSE FLUX RECIPROCATING MOTOR AND RECIPROCATING COMPRESSOR HAVING A TRANSVERSE FLUX RECIPROCATING MOTOR - A transverse flux reciprocating motor and a reciprocating compressor having a transverse flux reciprocating motor are provided. The transverse flux reciprocating motor may include a stator wound with a magnet coil, a mover inserted into the stator and coupled with a magnet having opposite magnetic poles in an orthogonal direction with respect to a magnetic flux generated by the magnet coil, and a magnetic resonance spring that allows the mover to perform a resonance motion with respect to the stator using a force trying to move toward a side with low magnetic resistance between the stator and the mover, whereby the transverse flux reciprocating motor and the reciprocating compressor having a transverse flux reciprocating motor may be reduced in size and weight and obtain high efficiency. | 2017-12-28 |
20170373577 | Vibration Motor - A vibration motor includes a housing; a fixed component; an elastic connecting piece; and a vibrating component comprising a counterweight suspended by the elastic connecting piece. One of the fixed component and the vibrating component includes a coil, and the other includes a magnet. The vibration motor further includes a damping piece fixed on the counterweight and facing the elastic connecting piece. One of the counterweight and the damping piece is provided with a slot and a glue dispersing slot connecting with the slot, and a projecting part formed on the other of the counterweight and the damping piece for matching with the slot. | 2017-12-28 |
20170373578 | Vibration Motor - A vibration motor is disclosed. The vibration motor includes a housing; an elastic connecting piece; a fixed component; a vibrating component comprising a counterweight suspended in the housing by the elastic connecting piece; and a damping piece accommodated in the housing and fixed on the counterweight. One of the fixed component and the vibrating component includes coils, and the other includes a magnet. The counterweight includes a restricting protrusion extending from a side facing the elastic connecting piece for abutting against and restricting the damping piece. | 2017-12-28 |
20170373579 | PRIMARY ELEMENT OF AN IRONLESS LINEAR MOTOR - A primary element of an ironless linear motor include cooling plates. Each of the cooling plates is connected to a connecting piece extending in a region of an edge of the cooling plate. The connecting pieces are configured to supply coolant. The connecting pieces are located one above the other in a direction perpendicular to the cooling plates so as to form a common connecting region of the cooling plates at an end face of the primary element. A plurality of coils are disposed between the cooling plates. A coolant distribution header is releasably attached to the connecting region. | 2017-12-28 |
20170373580 | SIX-DEGREE-OF-FREEDOM LINEAR MOTOR - A six-degree-of-freedom linear motor is disclosed, including a magnet array and a coil group disposed above the magnet array, the magnet array includes a first Halbach magnet array and a second Halbach magnet array, the first Halbach magnet array has a parallelogrammic cross section in a plane defined by X- and Y-axes, the first Halbach magnet array has a first side parallel to the Y-axis and a second side forming an angle of θ with the Y-axis, the second Halbach magnet array is in mirror symmetry with the first Halbach magnet array with respect to the Y-axis, and the coil group includes a first, second, third and fourth coil group, each having an axis inclined at an angle of θ with respect to the Y-axis, the first and second coil groups are in mirror symmetry with the third and fourth coil groups with respect to the Y-axis, respectively. | 2017-12-28 |
20170373581 | LONG DISTANCE POWER TRANSMISSION WITH MAGNETIC GEARING - Low frequency power is transmitted over long distances from a surface power supply to a subsea rotating machine, such as a pump or compressor. The low frequency power is used to rotate a motor at low speed. A liquid filled magnetic step-up gear module might be used to increase the low speed motor shaft to a higher speed output shaft that can be used to operate the rotating machine. The magnetic gear module can be configured as a fixed ratio, and the surface power supply can be configured to adjust the power frequency to change the speed of a single subsea rotating machine. In other embodiments, the magnetic gear module can provide a variable gear ratio. A fixed low frequency might be transmitted from the surface and multiple subsea loads can be operated from the same power source, each having their own variable magnetic gear module. | 2017-12-28 |
20170373582 | Pole-Piece Structure for a Magnetic Gear - The disclosure provides a pole-piece structure for a magnetic gear, comprising a plurality of laminate plates, wherein each plate comprises one or more apertures and an aperture in each plate aligns with an aperture in an adjacent plate to form one or more channels extending from a first end of the laminate plates to a second, opposite end of the laminate plates, wherein a resin cast is provided within each channel to hold the plurality of laminate plates together. | 2017-12-28 |
20170373583 | SEMICONDUCTOR DEVICE - A semiconductor device includes an element drive unit configured to control a control terminal of a voltage-control type semiconductor element using the control signal as input, the element drive unit including a control circuit that is driven using the control signal as a power supply. The element drive unit includes: a first voltage divider circuit that is connected between an input terminal to which the control signal is input and a low potential side terminal connected to a low potential side terminal of the voltage-control type semiconductor element and is configured such that a first divided voltage is not greater than a set voltage; a semiconductor switching element configured to control the first voltage divider circuit; and a second voltage divider circuit for making the semiconductor switching element conductive. The first divided voltage is supplied to the control terminal of the voltage-control type semiconductor element and the control circuit. | 2017-12-28 |
20170373584 | VOLTAGE CONTROL APPARATUS AND INFORMATION PROCESSING APPARATUS - A voltage control apparatus includes a boost converter configured to convert an input voltage to a voltage equal to or higher than a first voltage in an operative state and directly output the input voltage in an inoperative state, a buck-boost converter coupled with the boost converter in parallel and configured to convert the input voltage to a second voltage lower than the first voltage, a memory, and a processor coupled to the memory and configured to keep the buck-boost converter in the operative state, set the boost converter to the inoperative state when the input voltage is equal to or higher than the first voltage, and change the boost converter to the operative state when the input voltage is lower than the first voltage. | 2017-12-28 |
20170373585 | HYBRID FEEDFORWARD CONTROL ARCHITECTURE AND RELATED TECHNIQUES - A systematic procedure for the synthesis of hybrid feedforward control architectures for pulse-width modulated (PWM) switching converters is provided. In this hybrid feedforward control architecture selected converter variables are sensed and utilized in a particular way based on the converter open-loop characteristics to determine the duty-cycle needed to achieve a control objective. Compared to standard feedback control techniques, advantages can include simpler controller implementation, more convenient sensing, and improved static and dynamic regulation. An example systematic procedure for developing hybrid feedforward controllers is illustrated by first considering a previously known example of hybrid feedforward control: hybrid feedforward control of a boost power factor correction (PFC) rectifier operating in discontinuous conduction mode (DCM). The hybrid feedforward control synthesis principles are also used to realize new hybrid feedforward control architectures, such as a four switch buck boost converter. | 2017-12-28 |
20170373586 | MODULATOR FOR A HYBRID CONVERTER SYSTEM - The present disclosure is directed to a system and method for modulating a voltage output of a hybrid converter system having first and second set of Si-based power electronic devices coupled to first and second voltage source, respectively, and a first set of SiC-based power electronic devices coupled to the first and second sets of Si-based power electronic devices. The method includes switching between operational states of the hybrid converter system based on a desired voltage output, wherein each operational state includes one of the Si-based power electronic devices from the first and second sets of Si-based power electronic devices and one of the SiC-based devices from the first set of SiC-based power electronic devices being switched on and the remaining power electronic devices being switched off. Each SiC-based power electronic device of the first set of SiC-based power electronic devices switches at a higher frequency as compared to each Si-based power electronic device of the first and second sets of the Si-based power electronic devices. | 2017-12-28 |
20170373587 | COMPACT PARTITIONED CAPACITOR FOR MULTIPLE VOLTAGE DOMAINS WITH IMPROVED DECOUPLING - Methods and apparatus relating to a compact partitioned capacitor design for multiple voltage and/or load domains (e.g., with improved decoupling) are described. In an embodiment, a capacitor provides substrate decoupling for a plurality of loads. Moreover, the capacitor is capable of decoupling two or more voltage domains. Furthermore, in some embodiments the capacitor is capable of decoupling two or more voltage domains and mitigating self-noise and/or cross-noise between them. Other embodiments are also disclosed and claimed. | 2017-12-28 |
20170373588 | ELECTRICAL CONVERSION - An apparatus and method for use in electrical conversion are described. The apparatus includes a bridge rectifier having an input side and an output side, and a switched capacitor line connected across the output side of the rectifier, wherein the switched capacitor line includes a capacitor, a charging leg and a switched discharge leg, and wherein the charging leg incorporates a transistor controlled so as to maintain a substantially constant charging current when the transistor is conductive. | 2017-12-28 |
20170373589 | INTRODUCING JITTER TO A SWITCHING FREQUENCY BY WAY OF MODULATING CURRENT LIMIT - A controller includes a switch controller coupled to a power switch coupled to an energy transfer element. The switch controller is coupled to receive a current sense signal representative of a drain current through the power switch. The switch controller is coupled to generate a drive signal to control switching of the power switch in response to the current sense signal and a modulated current limit signal to control a transfer of energy from an input to an output of the power converter. A control modulator is coupled to generate a first signal. A jitter modulator is coupled to generate a second signal. The second signal is a periodic signal having a modulation time period that is greater than a switching period of the drive signal. An arithmetic operator circuit is coupled to generate the modulated current limit signal in response to the first signal and the second signal. | 2017-12-28 |
20170373590 | Distributed Power Harvesting Systems Using DC Power Sources - A method for maintaining reliability of a distributed power system including a power converter having input terminals and output terminals. Input power is received at the input terminals. The input power is converted to an output power at the output terminals. A temperature is measured in or in the environment of the power converter. The power conversion of the input power to the output power may be controlled to maximize the input power by setting at the input terminals the input voltage or the input current according to predetermined criteria. One of the predetermined criteria is configured to reduce the input power based on the temperature signal responsive to the temperature. The adjustment of input power reduces the input voltage and/or input current thereby lowering the temperature of the power converter. | 2017-12-28 |
20170373591 | BOOSTER CIRCUIT - Provided is a booster circuit enabling improvement of efficiency of a stress test for a circuit to which a boosted voltage is applied. A voltage divider circuit is configured to have a voltage-dividing ratio that is variable depending on a test signal, and a limiter circuit is configured to clamp a voltage to a voltage higher than a boosted voltage in normal operation. In a test mode, the voltage divider circuit is controlled so that the boosted voltage becomes higher than that in the normal operation, and the limiter circuit clamps the boosted voltage, with the result that a booster section continuously operates. | 2017-12-28 |
20170373592 | POWER CONVERTER WITH RESONANT CIRCUIT - In a power converter, a first electrical path connects between the series resonant circuit and a selected terminal from the high- and low-side input and output terminals of the power converter. An auxiliary diode is provided on one of the series resonant circuit and the first electrical path. An auxiliary switch, when turned on, causes an inductor current to flow through the auxiliary diode to the resonance inductor, thus storing electromagnetic energy into the resonance inductor, and causes the resonance inductor and the capacitance component of the series resonant circuit to resonate with each other. A second electrical path bypasses the auxiliary switch for flow of the inductor current. A discharge unit is provided on the second electrical path. The discharge unit is activated to discharge the electromagnetic energy stored in the resonance inductor via the second electrical path. | 2017-12-28 |
20170373593 | DC/DC CONVERTER WITH A FLYING CAPACITOR - A DC/DC converter includes a first low-voltage terminal point, a second low-voltage terminal point and a third low-voltage terminal point, and a first high-voltage terminal point and a second high-voltage terminal point. The first low-voltage terminal point and the first high-voltage terminal point are directly connected to one another, and an actively drivable switching element, a capacitor and a further switching element are connected in series between the first high-voltage terminal point and the second high-voltage terminal point. The capacitor is connected between the second low-voltage terminal point and the third low-voltage terminal point, a further capacitance is directly connected between the second low-voltage terminal point and the third low-voltage terminal point, and the further capacitance is decoupled from the capacitor at two terminals by two inductors, respectively. | 2017-12-28 |
20170373594 | Hybrid Buck - A system is disclosed which allows for a multiphase Buck switching converter, where some phases operate in peak-mode current control, and some phases operate in valley-mode current control, simultaneously with the peak-mode phases. The peak-mode phases of the switching converter operate at lower frequency, and with a higher value inductor than the valley mode phases. The peak-mode phases support discontinuous control mode (DCM) operation and continuous control mode (CCM) operation, and the valley-mode phases only support CCM operation. The peak-mode phases of the switching converter are always enabled, and the valley-mode phases are only enabled at high currents. The peak-mode and valley-mode currents are matched with a peak current servo, for better efficiency. | 2017-12-28 |
20170373595 | Switching Converter - A switching converter comprising a regulation circuit adapted to regulate an output value of the converter based on a ramp signal is provided. A feedback circuit adapted to control at least one of a delay and a slope of the ramp signal based on a parameter of the ramp signal is also provided. A method of regulating an output value of a switching converter is also presented. | 2017-12-28 |
20170373596 | Adaptive On-Time Switching Converter - Adaptive-on-time techniques to improve the frequency variations inherent in constant-on-time COT converters are presented. A switching converter contains a power switch; a pulse generator adapted to generate a pulsed signal to switch the power switch on with a switching frequency; a ramp generator adapted to generate a ramp signal; and a controller adapted to detect a parameter of the ramp signal, compare the parameter with a reference value, and to generate a control signal based on the comparison to control the switching frequency. This allows controlling a switching frequency of the converter without increasing a noise level of the converter. | 2017-12-28 |
20170373597 | DC POWER SOURCE APPARATUS - There is provided a DC power source apparatus that can prevent failures in components included in the DC power source apparatus and a load and that can prevent damage to or deterioration in the components. A control unit of the DC power source apparatus includes a function of limiting a duty value that is the ratio of an on-time to the switching period of a switching device, and makes an upper limit value for limiting the upper limit of the duty value variable during switching operation of the switching device. | 2017-12-28 |
20170373598 | POWER CONVERSION APPARATUS - In a power conversion apparatus including first to fourth semiconductor switching elements connected in series across both terminals of a high voltage-side capacitor, the third and fourth semiconductor switching elements are connected across both terminals of a low voltage-side capacitor via a reactor, and both terminals of the second and third semiconductor switching elements are connected across a charging-discharging capacitor. This charging-discharging capacitor includes a plurality of capacitor elements connected in parallel via a first wiring and a second wiring. Inductance components or capacitance components of the plurality of capacitor elements when viewed from an outflow-inflow portion of the first wiring and an outflow-inflow portion of the second wiring are different from each other such that the charging-discharging capacitor does not have a parallel resonance point in a driving frequency band but has a parallel resonance point in a noise frequency band. | 2017-12-28 |
20170373599 | APPARATUS FOR CONTROLLING INSULATING GATE-TYPE SEMICONDUCTOR ELEMENT, AND POWER CONVERSION APPARATUS USING APPARATUS FOR CONTROLLING INSULATING GATE-TYPE SEMICONDUCTOR ELEMENT - An apparatus is adapted to drive an insulating gate-type semiconductor element by a first control voltage and a second control voltage, that are supplied to a first insulating gate and a second insulating gate, respectively, and includes a first noise filter inputting a signal about current that passes through the insulating gate-type semiconductor element, a first comparator making a comparison between an output signal of the first noise filter and a first reference signal and outputting a first comparison result, a first control voltage output circuit, and a second control voltage output circuit, the second control voltage output circuit being adapted to reduce the second control voltage when it is determined from the first comparison result that overcurrent passes through the insulating gate-type semiconductor element, the first control voltage output circuit being adapted to reduce the first control voltage after the second control voltage is reduced. | 2017-12-28 |
20170373600 | MULTI-MODE SWITCHING POWER CONVERTER - In accordance with embodiments of the present disclosure, a multi-mode switching power converter may include a power inductor, a first switch coupled between a first terminal of the power inductor and a first supply terminal having a first voltage, a second switch coupled between the first terminal of the power inductor and a second supply terminal having a second voltage, a full bridge comprising a plurality of switches and having an output for producing the output voltage comprising a first output terminal and a second output terminal, wherein a first input of the full bridge is coupled to a second terminal of the power inductor and a second input of the full bridge is coupled to one of the first supply terminal and the second supply terminal, and a capacitor coupled between the first output terminal and the second output terminal. | 2017-12-28 |
20170373601 | DC-DC CONVERTER - A DC-DC conversion scheme is described that includes a buck converter including a first switch connected in series with a first inductor, the first switch and first inductor providing a switched connected between an input and an output, a second switch being connected across output, and a DC boost arrangement connected between the first switch and the first inductor, the DC boost arrangement including second and third magnetically linked inductors, the second inductor being connected in series between the first switch and the first inductor, and the third inductor being electrically connected to a point intermediate the first and second inductors, the windings of the second and third inductors being such that a change in current flowing through the second inductor induces a boost current in the third inductor supplementing the current flowing through the second inductor. | 2017-12-28 |
20170373602 | CURRENT LIMIT PEAK REGULATION CIRCUIT FOR POWER CONVERTER WITH LOW STANDBY POWER DISSIPATION - A current limit peak regulation circuit, a current limit circuit and a power converter including the current limit peak regulation circuit. The current limit peak regulation circuit provides a current limit threshold to limit a maximum allowable peak current value of a current flowing through a main switch of the power converter and adjusts the current limit threshold to decrease with decrease in a switching frequency of the power converter when the power converter is in a constant voltage mode so as to reduce power dissipation of the power converter in standby mode. | 2017-12-28 |
20170373603 | POWER CONVERSION CIRCUIT WITH INDICATOR COUPLED TO INPUT TERMINAL TO SIGNAL CONDITION OF THE CONTROLLER - A power conversion circuit has a controller with an input terminal and a circuit configured to drive an electric current out of the input terminal in response to a condition of the controller. An indicator is coupled to the input terminal of the controller. The controller includes a clock signal controlling the electric current out of the input terminal. The input terminal is a voltage sensing terminal or feedback input terminal in some embodiments. | 2017-12-28 |
20170373604 | SWITCHING POWER SUPPLY APPARATUS - Switching power supply apparatus having standby mode in which a burst operation is performed. High- and low-side switching elements are series connected across a DC input voltage. A resonant circuit is connected across one of the switching elements. A controller that on-off controls the high-side switching element includes a peak power limiting circuit that monitors input power and outputs a forced turn-off signal upon detecting input power exceeding a determined value. A triangular wave voltage is generated during portions of the burst operation in which a switching frequency of the switching elements is gradually decreased or increased. An oscillation circuit receives the forced turn-off signal from the power limiting circuit, and the triangular wave voltage to generate an on-trigger and off-trigger signals at a switching frequency corresponding to a triangular wave voltage value, and output the off-trigger signal upon receipt of the forced turn-off signal. | 2017-12-28 |
20170373605 | INDUCTIVE POWER RECEIVER - An inductive power receiver | 2017-12-28 |
20170373606 | COMMUNICATION CIRCUIT FOR FLYBACK POWER CONVERTER WITH SYNCHRONOUS RECTIFIER - A method for communicating with a power converter comprises initiating a communication sequence by sensing a first distortion of a sensed waveform during a discharge period of a first power transfer cycle of the power converter. The sensed waveform is proportional to a secondary current of the power converter. At a primary side of the power converter, a data bit is received from a secondary side of the power converter, by sensing a second distortion to represent one state of the data bit and sending an absence of the second distortion to represent another state of the data bit. The secondary distortion is applied to the secondary current during the discharge period of a subsequent power transfer cycle. | 2017-12-28 |
20170373607 | POWER CONVERTER AND CONTROL METHOD THEREFOR - A power converter and a control method therefor are provided. The power converter includes a transformer, synchronous rectifier and a control circuit. A primary side of the transformer receives an input voltage, and a secondary side of the transformer generates a sensing signal. The synchronous rectifier is coupled to the secondary side of the transformer. The control circuit receives the sensing signal and detects a changing slope of the sensing signal, and accordingly generates a control signal to control the synchronous rectifier to be turned on or turned off, so as to regulate an output voltage of the power converter. | 2017-12-28 |
20170373608 | Power Converter Including an Autotransformer and Power Conversion Method - A power converter circuit includes a chopper circuit configured to receive an input voltage and generate a chopper voltage with an alternating voltage level based on the input voltage, an autotransformer including at least one tap, the autotransformer being coupled to the chopper circuit and configured to generate a tap voltage at the at least one tap, and a selector circuit configured to receive a plurality of voltage levels. At least one of these the voltage levels is based on the at least one tap voltage. The selector circuit is further configured to generate a selector output voltage based on the plurality of voltage levels such that the selector circuit selects two of the plurality of voltage levels and switches at a switching frequency between the two voltage levels. | 2017-12-28 |
20170373609 | High-Frequency Variable Load Inverter and Related Techniques - Inverter systems, circuits and associated control techniques for providing efficient delivery of high-frequency (HF) power and radio-frequency (RF) power into variable load impedances while maintaining resistive/inductive loading of the constituent inverters for zero voltage switching (ZVS) are described. The inverter architecture and associated control techniques for providing efficient delivery of HF into variable load impedances includes a first inverter having an output coupled to an input of an immittance converter. An output of the immittance converter is coupled to a second inverter. The second inverter maybe either serially or parallel coupled between the output of the immittance converter and a load. | 2017-12-28 |
20170373610 | ENERGY PANEL ARRANGEMENT POWER DISSIPATION - One or more techniques and/or systems are provided for facilitating shutdown of output power from an energy panel arrangement to a power converter. A shutdown implementation module is coupled between an energy panel arrangement and a power converter that converts DC power from the energy panel arrangement to AC power for an AC power grid. Responsive to identifying a power shutdown condition, the shutdown implementation module shuts down output power from the energy panel arrangement to the power converter. A power dissipating device is invoked to dissipate power associated with the shutdown of the output power (e.g., residual power within energy storage devices, such as capacitors, associated with the power converter). The shutdown implementation module may be located within a threshold distance from the energy panel arrangement (e.g., within about 10 feet) so that the output power may be shut off within a threshold timespan (e.g., within about 10 seconds). | 2017-12-28 |
20170373611 | MINIATURE KINETIC ENERGY HARVESTER FOR GENERATING ELECTRICAL ENERGY FROM MECHANICAL VIBRATIONS - The invention relates to a miniature kinetic energy harvester ( | 2017-12-28 |
20170373612 | HARVESTING ENERGY FROM COMPOSITE AIRCRAFT ENGINE COMPONENTS - The present disclosure is directed to an engine component for a gas turbine engine, the engine component including a substrate that includes a composite fiber and defines a surface. An energy harvesting fiber is positioned within the substrate. | 2017-12-28 |
20170373613 | Brake System and Controller for Use with a Wellhead Direct Drive - The invention relates to fluid drive systems used in fluid wells and brake systems for permanent magnet wellhead direct drives. The braking controller connects or disconnects a brake resistor from a back EMF. A variable frequency drive (VFD) drives the motor and communicates with the control circuitry of the brake controller. The control circuitry monitors the brake resistor and depending on the rotational speed and direction of the motor and operating state of the VFD, disconnects or connects the brake resistor. If the direction of the motor is in reverse and above a threshold speed, it connects the brake resistor. If the direction of the motor is in reverse and below the threshold speed, the control circuitry dissipates stored back EMF through the brake controller. The amount of stored back EMF corresponds to the time to empty a pump. | 2017-12-28 |
20170373614 | CONTROL SCHEME FOR POWER TOOL HAVING A BRUSHLESS MOTOR - A power tool is provided including a housing, an electric motor disposed within the housing, a power switch circuit disposed between a power supply and the electric motor, a main controller, and a redundant controller. The main controller is arranged to control a switching operation of the power switch circuit to regulate a speed of the motor, and is configured to monitor at least one of a speed or a rotational direction of the electric motor and deactivate the power switch circuit upon detection of fault condition associated the speed or the rotational direction of the electric motor. The redundant controller is configured to monitor at least one of the speed or the rotational direction of the electric motor independently from the main controller and deactivate the power switch circuit upon detection of fault condition associated the speed or the rotational direction of the electric motor. | 2017-12-28 |
20170373615 | CONTROL SCHEME FOR OPERATING CORDLESS POWER TOOL BASED ON BATTERY TEMPERATURE - A power tool is provided including a housing; an electric motor disposed within the housing; a power terminal arranged to received electric power form a battery pack; a power switch circuit disposed between the power terminal and the electric motor; and a controller configured to control a switching operation of the power switch circuit to regulate power being supplied from the power terminal to the electric motor. The controller is configured to receive a temperature signal indicative of a temperature of the battery pack, determine if the temperature of the battery pack is below a lower temperature threshold, and operate the switching operation of the power switch circuit in a normal mode of operation if the temperature of the battery pack is greater than or equal to the low temperature threshold and in a cold mode of operation if the temperature of the battery pack is below the low temperature threshold. | 2017-12-28 |
20170373616 | Motor, Activation Control Method for the Motor, and Fan including the Motor - A motor includes a stator coil, a rotor and a driving unit. The stator coil is configured to be electrified to generate a magnetic force. The rotor is rotatably coupled with the stator coil and includes a magnetic member facing the stator coil. The driving unit is electrically connected to the stator coil and outputs a driving signal to the stator coil. An electrical characteristic value of the driving signal increases in a gradual manner. The rotor outputs a motive power that is gradually increased during a process the rotor rotates from an electric angle back to a same electric angle. In addition, an activation control method for the motor and a fan are also disclosed. | 2017-12-28 |
20170373617 | ANGLE ESTIMATOR, MOTOR CONTROLLER, MOTOR DRIVER, MOTOR DRIVING SYSTEM, IMAGE FORMING APPARATUS, AND CONVEYANCE DEVICE - An angle estimator includes correction means for correcting a phase of an error parameter to obtain a corrected error parameter and estimation means for calculating an estimated speed and an estimated angle of the motor based on the corrected error parameter. The error parameter is a function of an angle error representing a difference between an actual angle and an estimated angle of a motor. | 2017-12-28 |
20170373618 | MOTOR CONTROL APPARATUS AND CONTROL METHOD FOR MOTOR CONTROL APPARATUS - A position estimation unit of a motor control apparatus includes a counter electromotive voltage estimation unit configured to estimate a counter electromotive voltage generated in a motor based on generated voltage and current of the motor, and an arc tangent calculation unit configured to perform an arc tangent calculation using coordinate data on a two-dimensional plane based on the estimated counter electromotive voltage to calculate an angle of deviation. The arc tangent calculation unit includes a rotation calculation unit configured to repeatedly perform a rotation calculation of coordinate data on a fundamental wave and a harmonic; a rotation direction judgment unit configured to judge a rotation direction of a subsequent rotation calculation based on a result of the rotation calculation of the rotation calculation unit; and a deviation angle calculation unit configured to calculate a total of rotation angles obtained as a result of the rotation calculation. | 2017-12-28 |
20170373619 | METHOD OF CONTROLLING ELECTRIC MOTORS, CORRESPONDING DEVICE AND MOTOR - A driving circuit for an electric motor including multiple windings includes a sensing circuit to sense motor winding currents. A motor rotation angle signal is generated from the sensed currents and motor control voltages are generated as a function of the motor rotation angle signal. The motor windings are driven with motor drive voltages obtained by injecting into the motor control voltages injection pulses. The sensed currents include both torque components and injection components. The motor rotation angle signal is generated as a function of the injection components of the sensed currents. | 2017-12-28 |
20170373620 | DUAL-VOLTAGE BRUSHLESS MOTOR - A dual-voltage brushless motor ( | 2017-12-28 |
20170373621 | Determining a Spin Direction of an Electric Motor - Embodiments include devices and methods for determining a spin direction of a motor of an unmanned aerial vehicle (UAV). A processor of the UAV may apply a first power to spin the motor in a first direction. The processor may select the first direction in response to determining that a detected rotational frequency-per-applied power in the first direction matches the expected rotational frequency-per-applied power. The processor may select the first direction in response to determining that a detected vertical motion is positive when the first power is applied in the first direction. The processor may also apply a second power to spin the motor in a second direction. The processor may determine whether a detected rotational frequency-per-applied power in the second direction matches the expected rotational frequency-per-applied power. The processor may determine whether a detected vertical motion is positive when the second power is applied in the second direction. | 2017-12-28 |
20170373622 | Motor Control Device And Motor Controlling Method - This motor control device has an inexpensive configuration and enhances motor current target value tracking. This motor control device has an H bridge circuit that has a switching element and is connected to a motor coil provided in a motor, and a control means that drives the switching element at each prescribed PWM period and specifies an operation mode for the H bridge circuit from among a charge mode for increasing the motor current (Icoil) flowing through the motor coil, a fast decay mode for decreasing the motor current, and a slow decay mode. In each PWM period, the control means selects one of the operation modes on the basis of the result of comparing the motor current and a current reference value (Iref) before the time that has passed from the start of the PWM period reaches a prescribed current control re-execution time (Tr) and selects one of the operation modes on the basis of the result of comparing the motor current and the current reference value after the time that has passed reaches the current control re-execution time. | 2017-12-28 |
20170373623 | METHOD AND ELECTRONIC CIRCUIT FOR STALL DETECTION - A method for detecting stall of a multiphase motor operated in a sinusoidal micro-stepped mode. The method comprises: a) measuring at least one phase current and/or measuring the sum of all phase currents at regular time intervals synchronous with the micro-steps, b) calculating the difference between the measured phase current at a first moment and the measured phase current of the same phase at a previous moment and/or the difference between the measured sum of all phase currents at a first moment and the measured sum of all phase currents at a previous synchronous moment, c) analyzing the series of obtained current differences so as to generate a stall detection signal. | 2017-12-28 |
20170373624 | GENERATOR AND METHOD FOR CONTROLLING A GENERATOR - A switched reluctance generator and devices and methods for its control are concerned with generators and controls which can operate in an aerospace environment. The generator may have: a rotor having rotor poles; a stator having stator poles; and a controller. Either the rotor or stator poles each have windings to which current can be supplied to energise the poles and from which current can be drawn to a load; and the controller is arranged to: periodically excite each of the windings in turn to a pre-determined level of current; measure the current generated in each winding; cease the excitation when the current generated in each winding exceeds the excitation current; and direct the generated current in each winding to the load. The generator may thereby avoid the need to determine the position of the rotor poles relative to the stator poles to provide the commutation of the generator. | 2017-12-28 |
20170373625 | MONITORING OF A DC-LINK OF A SPLIT WIND-TURBINE-CONVERTER SYSTEM - A method of monitoring a split wind-turbine-converter system with at least one generator-side converter and at least one grid-side converter arranged at distant locations, and a DC-link in the form of an elongated conductor arrangement with at least one positive and at least one negative conductor. The impedance of the DC-link conductor arrangement is determined by means of DC-voltage sensors. The voltages between the positive and the negative conductors are determined at the generator-side converter and at the grid-side converter, and the difference between the voltages is determined. The impedance of the DC-link conductor arrangement is determined by putting the determined voltage difference in relation to the DC current flowing through the DC-link conductor arrangement. If the impedance exceeds a given impedance threshold a fault state is recognized. | 2017-12-28 |
20170373626 | CONTROLLING OPERATION OF A POWER CONVERTER BASED ON GRID CONDITIONS - Systems and methods for controlling operation of a power converter based on grid conditions are provided. In particular, a first gating voltage can be applied to a switching element of a power converter associated with a wind-driven power generation system. The first gating voltage can be greater than a threshold voltage for the switching element. A grid event associated with an electrical grid coupled to the power generation system can be detected. A second gating voltage can be applied to the gate of the switching element during the detected grid event. The second gating voltage can be greater than the first gating voltage. | 2017-12-28 |
20170373627 | APPARATUS FOR CONTROLLING THREE PHASE ROTARY ELECTRIC MACHINE REDUCING PEAK VALUE OF PHASE CURRENT - A control apparatus for driving a three-phase rotary electric machine that generates torque including magnet torque and reluctance torque is provided. AC current supplied to two winding groups of the rotary electric machine have the same amplitude and the mutually different phases defined as 30±60×n[deg]. The control unit calculates d-axis current and q-axis current of 6 (2k+1)th order component superposed on a fundamental wave component on dq coordinate, to reduce a peak of the first order component in the phase current, thereby controlling the three-phase rotary electric machine. The control unit calculates current such that an amplitude of the q-axis current of the 6 (2k+1)th order component is larger than an amplitude of the d-axis current of the 6 (2k+1)th order component. | 2017-12-28 |
20170373628 | POWER CONVERSION DEVICE FOR ELECTRIC VEHICLE - A power conversion device includes a main battery, an auxiliary battery, an inverter circuit, a high-voltage wiring, a smoothing capacitor, a main wiring, a subsidiary wiring, a DC-DC converter and a controller. The DC-DC converter is connected to a high-potential wire of the main wiring, a low-potential wire of the main wiring, a high-potential wire of the subsidiary wiring, a low-potential wire of the subsidiary wiring, the high-potential wire of the high-voltage wiring and the low-potential wire of the high-voltage wiring. The controller is connected to the auxiliary battery and the DC-DC converter. The DC-DC converter is configured to supply a power stored in the smoothing capacitor to the controller through the DC-DC converter such that the controller drives the inverter circuit and that the power stored in the smoothing capacitor is supplied to the motor through the inverter circuit, when a collision of the vehicle is detected. | 2017-12-28 |
20170373629 | MOTOR DRIVING APPARATUS AND METHOD OF CONTROLLING THE SAME - It is an aspect of the present disclosure to provide a motor driving apparatus, and a method of controlling the same. In accordance with one aspect of the present disclosure, the motor driving apparatus includes an inverter configured to supply driving power to a motor; a sensing unit configured to sense a DC voltage supplied to the inverter and a driving current supplied from the inverter to the motor; and a controller configured to compensate for an iron loss and a copper loss by calculating a loss of the motor based on the sensed DC voltage and driving current and controlling the inverter to adjust the driving current based on the calculated loss of the motor. | 2017-12-28 |
20170373630 | METHOD AND APPARATUS FOR DETECTING GROUND FAULTS IN INVERTER OUTPUTS ON A SHARED DC BUS - A system to detect a ground fault at the output of an inverter section prior to powering up a motor drive system is disclosed. A low voltage power supply is connected to the DC bus prior to connecting the input power source to the rectifier section. If a ground fault exists, the voltage potential on the DC bus causes conduction through one of the freewheeling diodes connected in parallel to the power switching device on the output of the inverter section. A fault detection circuit generates a signal corresponding to the presence of the low Voltage potential when the low voltage is applied to the DC bus. If a ground fault is present at the output of one of the inverter sections, the motor drive system prevents the AC voltage from being applied to the rectifier section. | 2017-12-28 |
20170373631 | CONTROLLER AND METHOD FOR DETECTING A BLOCKED STATE OF AN ELECTRICAL MACHINE - A blockage detector for detecting a blocked state of an electrical machine has: a first power determiner and a second power determiner for determining a first power consumption and a second power consumption of the electrical machine while a first phase voltage and a second phase voltage for operating at a first rotating field speed and a second rotating field speed are applied to the electrical machine, a quotient former for producing a power quotient between the first power consumption and the second power consumption; and a comparator for comparing the power quotient with a threshold value for the power quotient. The invention also relates to an inverter controller, an inverter, a drive, ventilation or air-conditioning system and a vehicle having a blockage detector according to the invention. In addition, the invention relates to a corresponding method for detecting a blocked state of an electrical machine. | 2017-12-28 |
20170373632 | Monolithic Bracket for Flat Roof Mounted Photovoltaic Modules - An integral, monolithic mounting bracket supports a corner of a photovoltaic module. The bracket includes a ballast tray for holding one or more ballast blocks, and includes a plurality of monolithic support legs that are disposed at acute angles from a plane of the ballast tray and that are integral with the ballast tray. The bracket can be manufactured by stamping at least two identical sections of metal from the sheet and then bending-up each section on its remaining uncut fourth side into a near-vertical position, so that each bent-up section forms a monolithic support leg. | 2017-12-28 |
20170373633 | CLEANING SYSTEM FOR SOLAR PANELS - A solar panel cleaning system includes a brush connected by a hose to a fluid supply. The brush has scrubbing material, such as bristles, attached to a brush body for mechanically cleaning the surface of the solar panel. The width of the contact surface of the scrubbing material may be equal to the width of the solar panel, so that the solar panel may be cleaned with only upward and downward strokes. The brush body may further support a fluid manifold that receives the fluid from the fluid supply. The fluid manifold may include nozzles that emit the fluid under pressure onto the solar panel. The nozzles may project both frontward and rearward of the brush body so that the fluid sprays off the solar panel in front of and behind the brush. Spray patterns of the nozzles may overlap and impinge the entire width of the solar panel. | 2017-12-28 |
20170373634 | MULTIPLE FUNCTION MICROSTRUCTURE WITH LOTUS AND LIGHT TRAPPING EFFECTS - A multiple function microstructure with lotus and light trapping effects includes plural triangular walls with same and different heights and having a triangular cross section and arranged apart or staggered with one another, and a surface layer, a middle layer having zero to plural layers, and a bottom layer. The bottom layer and one of the other layers constitute a closed space to form an air spring, so that droplets can be bounced and separated from the surface of the microstructure. Each triangular wall has a cross section substantially in a smooth upwardly convex curve to prevent droplets from cracking while dropping. The microstructure selectively made of a hydrophobic material provides lotus and light trapping effects, and the microstructure selectively made of an oleophobic material provides a superoleophobic effect, and the surface of the microstructure may be coated with various type of chemical materials for different applications. | 2017-12-28 |
20170373635 | PHOTOVOLTAIC SYSTEMS COMPRISING DOCKING ASSEMBLIES - Photovoltaic (PV) assemblies and modules comprising electronic component docking assemblies are described herein. Docking assemblies can comprise a junction box and an electronic component housing configured to be reversibly connected or “docked.” The photovoltaic assemblies and modules described herein facilitate field replacement or removal of electronic components e.g. microinverters from a corresponding module and/or junction box. Additionally, the photovoltaic docking assemblies described herein enable PV modules and arrays with minimal cables and wiring for electrical interconnection. | 2017-12-28 |
20170373636 | SNS-595 AND METHODS OF USING THE SAME - The present invention relates to SNS-595 and methods of treating cancer using the same. | 2017-12-28 |
20170373637 | OSCILLATOR, AN ELECTRONIC APPARATUS, AND A VEHICLE - An oscillator includes a first package including a first base, and a first lid bonded to the first base, a first temperature controller housed in the first package, and mounted on the first base, a second temperature controller housed in the first package, and mounted on the first base, and a circuit element housed in the first package, mounted on the first base, and including at least a part of an oscillation circuit, the circuit element is disposed between the first temperature controller and the second temperature controller in a planar view. | 2017-12-28 |
20170373638 | TEMPERATURE-COMPENSATED CRYSTAL OSCILLATOR BASED ON DIGITAL CIRCUIT - The present invention provides a temperature-compensated crystal oscillator based on digital circuit, a closed-loop compensation architecture is employed to realize the high precision compensation of the crystal oscillator. The output frequency f(T) of the TCXO to be compensated is directly connected with the compensation voltage V | 2017-12-28 |
20170373639 | Method And System For A Multi-Core Multi-Mode Voltage-Controlled-Oscillator (VCO) - Methods and systems for a multi-core multi-mode voltage-controlled-oscillator (VCO) may comprise generating a plurality of oscillating signals utilizing a plurality of voltage controlled oscillators (VCOs) arranged symmetrically on an integrated circuit, where interconnects for the VCOs may be arranged in quiet zones at locations equidistant from each pair of VCOs. An interconnection ring may be centered within the arranged VCOs that comprises at least two conductive lines that couple to output terminals each VCO. The VCOs may receive control signals from interconnects coupled to at least one conductive line in the interconnection ring. The VCOs may receive control signals from a conductive line in said interconnection ring. A positive terminal of a first VCO of a pair of adjacent VCOs of the plurality of VCOs may be coupled to a same conductive line of the interconnection ring as a negative terminal of a second of the pair of adjacent VCOs. | 2017-12-28 |
20170373640 | POWER FACTOR CORRECTION CIRCUIT AND MULTIPLIER - The present invention disclosure provides a multiplier and a power factor correction circuit which the multiplier is applied. The multiplier comprises a Gilbert multiplier circuit comprising a first differential input stage, a second differential input stage and an output stage; a first differential voltage conversion circuit; a second differential voltage conversion circuit; and a bias current generating circuit; Wherein said output stage comprises: a current mirror unit comprising two current input terminals and a current output terminal; and a feedback control unit configured to ensure that the current output terminal does not output current when the voltage difference received by the multiplier is zero. The present invention is advantageous in improving the linearity of the multiplier and the accuracy of the output current of the multiplier output current. | 2017-12-28 |
20170373641 | MIXER AND METHOD FOR GENERATING AN OUTPUT SIGNAL FROM AN INPUT SIGNAL - A mixer for generating an analog output signal X | 2017-12-28 |
20170373642 | SYSTEM AND METHOD FOR ADAPTIVE POWER MODULATION FOR POWER AMPLIFIER - A method includes determining one or more characteristics of a system that uses a power amplifier. The method also includes determining, based on the one or more determined characteristics, a switching speed and a supply voltage for the power amplifier. The method further includes modulating a power supply of the power amplifier according to the determined switching speed and supply voltage. | 2017-12-28 |
20170373643 | POWER CONTROL METHOD, DEVICE AND COMMUNICATION TERMINAL FOR RADIO FREQUENCY POWER AMPLIFIER - Disclosed is a power control method for a radio frequency power amplifier, comprising the following steps: S1. reading a power source voltage signal and a power control signal and generating an amplified signal having a linear relationship with the power control signal; S2. according to the amplified signal and saturation information, generating one or more controlled currents, merging each controlled current, and converting the merged total current into voltage; S3. Conducting linear voltage regulation on the converted voltage and generating a base control voltage of the radio frequency power amplifier. The present invention dynamically monitors the saturation information of a pass element to change the base voltage of the radio frequency power amplifier, thus improving additional power efficiency of the radio frequency power amplifier at multiple power level and over a large power source voltage range, and improving the properties of the radio frequency switch thereof. | 2017-12-28 |
20170373644 | SYSTEM FOR MONITORING THE PEAK POWER FOR AN RF POWER AMPLIFICATION AND ASSOCIATED METHOD OF CALCULATING PEAK VALUE AND OF SELECTING SUPPLY VOLTAGE - Disclosed is a system for monitoring the peak power of a telecommunication signal to be transmitted for RF power amplification of the telecommunication signal to be transmitted, including a digital processing device, a digital to RF converter and a dc-dc converter, wherein the output of the dc-dc converter can take a discrete voltage value from N discrete voltage values, N being an integer equal to or greater than 2, the digital processing device including a processing path including an envelope tracking control logic adapted to create a continuous envelope tracking control signal. The processing path further includes logic for driving the dc-dc converter including a peak value calculating device and a power supply voltage selecting device. | 2017-12-28 |
20170373645 | Doherty-Chireix Combined Amplifier - An amplifier that is configured to amplify an RF signal includes a power combiner circuit. The power combiner circuit includes a first branch connected between a first RF input port and a summing node and a second branch connected between a second RF input port and the summing node. Each of the first and second branches includes an impedance inverter. The Chireix combiner is configured to present a Chireix load modulated impedance response to the first and second RF input ports. The power combiner circuit further includes compensation elements being configured to at least partially compensate for a reactance of the Chireix combiner circuit in a Doherty amplifier mode in which a signal is applied to the first RF input port and the second RF input port is electrically open. | 2017-12-28 |
20170373646 | Power Amplification Device - A power amplification device, including a first amplification branch, a second amplification branch, a harmonic injection circuit, and a first output matching circuit. A first amplifier in the first amplification branch supports a first frequency. A second amplifier in the second amplification branch supports the first frequency and a second frequency, and the second amplifier is turned off for a signal of the first frequency that has a power value lower than an enabling threshold. The harmonic injection circuit injects a signal of the second frequency that is input from a second input terminal (I | 2017-12-28 |
20170373647 | Linearity Enhancement Method For Low-Power Low-Noise Amplifiers Biased In The Subthreshold Region - An amplifier and corresponding method include a field-effect transistor (FET) amplifier and a cascode FET. Each FET may operate with a positive ratio between its third-order nonlinearity coefficient and its linear gain. An inductor added at a gate of the cascode FET, operatively coupled with other components in a circuit, results in a first equivalent impedance looking into an input of the cascode FET. The first equivalent impedance may substantially offset a distortion output of the FET amplifier based upon the added inductor. The inductor operatively coupled with the circuit may result in a second equivalent impedance looking out of the gate of the cascode FET. The second equivalent impedance may substantially offset a distortion output of the cascode FET based upon the added inductor. In addition, a programmable capacitor connected between the gate and drain of the cascode FET may further substantially offset a distortion output of each FET. | 2017-12-28 |
20170373648 | DISTRIBUTED ANTENNA SYSTEM ARCHITECTURES - One embodiment is directed to a distributed antenna system comprising a host unit and at least one remote antenna unit that is communicatively coupled to the host unit. The host unit is configured to communicate a downstream transport signal from the host unit to the remote antenna unit. The remote antenna unit to which the downstream transport signal is communicated uses the downstream transport signal to generate a downstream radio frequency signal for radiation from an antenna associated with the remote antenna unit. The remote antenna unit is configured to communicate an upstream transport signal from the remote antenna unit to the host unit, wherein the upstream transport signal is generated from a received upstream radio frequency signal received at the remote antenna unit. The remote antenna unit is configured to perform self-interference suppression processing in an upstream signal path using, as an input thereto, a feedback signal derived from the downstream radio frequency signal radiated from the antenna. Other embodiments are disclosed. | 2017-12-28 |
20170373649 | Methods and Devices for Ramping a Switched Capacitor Power Amplifier - A method for ramping a switched capacitor power amplifier is disclosed, where the switched capacitor power amplifier comprises a plurality of capacitors in a capacitor bank, and where a number of the capacitors in the capacitor bank are activated. The method comprises changing the number of capacitors in the capacitor bank that are activated, maintaining the changed number of activated capacitors in the capacitor bank for a period of time, and repeating the changing and maintaining, where a length of the period of time is varied between at least two repetitions of the maintaining. | 2017-12-28 |
20170373650 | METHODS AND DEVICES RELATING TO HIGH GAIN AMPLIFIERS - There is described herein methods and devices for high DC gain closed loop operation amplifiers exploiting cascaded low gain stages and a controller-based compensation circuit for stability. | 2017-12-28 |
20170373651 | TRANS-IMPEDANCE AMPLIFIER ARRANGEMENT AND CONTROL MODULE - A trans-impedance amplifier arrangement has an input configured to receive an output from a photo-detector, a current monitoring circuit configured in use to provide a current monitor signal dependent on a current through the photo-detector, and an output configured to output said current monitor signal to a control module, said output further configured to receive control information from said control module. A control module is configured to receive the current monitor signal and to provide the control information. | 2017-12-28 |
20170373652 | HIGH FREQUENCY SEMICONDUCTOR AMPLIFIER - A high frequency semiconductor amplifier includes a package base part, and a monolithic microwave integrated circuit. The package base part includes a metal plate provided with an attachment hole, a frame body bonded to the metal plate and provided with an opening, a first lead part, and a second lead part. The monolithic microwave integrated circuit is provided with a first amplification element and a second amplification element. An output electrode of the second amplification element is connected to the second lead part via an output combiner. Each finger electrode of the second amplification element is generally orthogonal to the first line. Each finger electrode of the first amplification element is generally parallel to the first line. The attachment hole of the metal plate is provided in a region lying along a second line generally orthogonal to the first line and protruding outside the frame body. | 2017-12-28 |
20170373653 | Current-bootstrap comparator and operational amplifier thereof - A current-bootstrap comparator includes a receiving unit, a first current generation unit and a second current generation unit. The receiving unit receives a load voltage signal, a low threshold voltage and a high threshold voltage. The first current generation unit generates a first current. The second current generation unit generates a second current having a magnitude substantially same as a magnitude of the first current and a direction reverse to the first current. The first current and the second current are supplied to a next-stage circuit as a source current and a corresponding sink current, respectively, when the level of the load voltage signal is higher than the high threshold voltage or lower than the low threshold voltage. The magnitudes of the first current and the second current substantially equal zero when the level of the load voltage signal is between the high threshold voltage and the low threshold voltage. | 2017-12-28 |
20170373654 | System and Method for a Multistage Operational Amplifier - According to an embodiment, an operational amplifier includes a first amplifier stage coupled between an input node and an intermediate node, a second amplifier stage coupled between the intermediate node and an output node, a compensation capacitor having a first terminal coupled to the intermediate node and a second terminal, and a compensation amplifier coupled between the output node and the second terminal. The compensation amplifier has a positive gain greater than one. | 2017-12-28 |
20170373655 | High Frequency Common Mode Rejection Technique for Large Dynamic Common Mode Signals - A system is disclosed which allows for canceling high frequency rail to rail common mode swing at pulse-width modulation (PWM) frequency for a Class-D, H and G audio amplifier or a Linear Resonance Actuator (LRA) driver. This allows wide bandwidth current sensing without the need of external components, or large on-chip resistor-capacitor (RC) networks, facilitating integration of the sense resistor. In addition, the sense amplifier DC input common mode and audio band common mode swing is reduced, allowing a sense resistor high frequency common mode swing of a least twice the MOSFET gate break down voltages. | 2017-12-28 |
20170373656 | LOUDSPEAKER-ROOM EQUALIZATION WITH PERCEPTUAL CORRECTION OF SPECTRAL DIPS - A method for generating a perceptual equalization (EQ) filter applicable to an audio signal to equalize the audio signal, including: generating a full EQ filter for use in performing full equalization on the signal; and modifying the frequency-amplitude spectrum of the full EQ filter in accordance with a dip detection threshold function, thereby generating the perceptual EQ filter, where the dip detection threshold function is indicative of minimum perceivable amplitude of each of at least a number of different dips in the frequency-amplitude spectrum of an acoustic signal. Also, a method for equalizing an audio signal, including: generating a full EQ filter for use in performing full equalization on the signal, modifying the frequency-amplitude spectrum of the full EQ filter in accordance with at least one dip detection threshold value, thereby generating a perceptual EQ filter, and applying the perceptual EQ filter to perceptually equalize the signal. | 2017-12-28 |
20170373657 | METHOD FOR ADAPTING THE VOLUME GAIN FOR THE POWER LIMITATION OF AN AMPLIFIER AND AMPLIFIER - The invention relates to a method for adapting the applied volume gain in an amplifier controlling at least one loudspeaker of an enclosure according to the desired volume gain selected by a user on a scale increased by a maximum desired volume gain, including the following steps:
| 2017-12-28 |
20170373658 | INPUT/OUTPUT SYSTEMS AND DEVICES FOR USE WITH SUPERCONDUCTING DEVICES - Systems and devices for providing differential input/output communication with a superconducting device are described. Each differential I/O communication is electrically filtered using a respective tubular filter structure incorporating superconducting lumped element devices and high frequency dissipation by metal powder epoxy. A plurality of such tubular filter structures is arranged in a cryogenic, multi-tiered assembly further including structural/thermalization supports and a device sample holder assembly for securing a device sample, for example a superconducting quantum processor. The interface between the cryogenic tubular filter assembly and room temperature electronics is achieved using hermetically sealed vacuum feed-through structures designed to receive flexible printed circuit board cable. | 2017-12-28 |
20170373659 | METHOD FOR DESIGNING FILTER - A method is provided to design a filter. In the method, a difference between a high frequency to be blocked and a resonance frequency of a distributed constant type reference filter is obtained, the reference filter including a reference coil having windings wound at a plurality of pitches having the same length in an axial direction and a capacitor connected in parallel to the reference coil. When the difference is greater than the predetermined value, a split position in the reference coil where the reference coil is divided into a first coil element and a second coil element connected in series and a split distance between the first coil element and the second coil element to reduce the first difference. | 2017-12-28 |
20170373660 | Matching networks for wireless power transfer and related techniques - In one implementation, an analytical approach to determining an improved and/or optimal design of a matching network in a capacitive or inductive WPT system is provided. In one implementation, for example, a framework is provided to enable stage(s) of the network to simultaneously provide gain and compensation. The multistage matching network efficiency can be improved and/or optimized, such as by using the method of Lagrange multipliers, resulting in the optimum distribution of gain and compensation among the L-section stages. | 2017-12-28 |
20170373661 | METHOD AND APPARATUS FOR ADAPTING A VARIABLE IMPEDANCE NETWORK - The present disclosure may include, for example, a tunable capacitor having a decoder for generating a plurality of control signals, and an array of tunable switched capacitors comprising a plurality of fixed capacitors coupled to a plurality of switches. The plurality of switches can be controlled by the plurality of control signals to manage a tunable range of reactance of the array of tunable switched capacitors. Additionally, the array of tunable switched capacitors is adapted to have non-uniform quality (Q) factors. Additional embodiments are disclosed. | 2017-12-28 |