39th week of 2018 patent applcation highlights part 72 |
Patent application number | Title | Published |
20180278120 | ROTARY ELECTRIC MACHINE COOLED BY A HEAT-TRANSFER FLUID - The invention relates to a rotary electric machine which comprises: a stator provided with a body; a casing in at least two parts; an annular chamber for cooling the machine ( | 2018-09-27 |
20180278121 | BI-DIRECTIONAL VIBRATOR MECHANISM USABLE WITH A CONCRETE FINISHING TOOL - A remote controlled vibration imparting device for a concrete finishing tool includes a case that attaches to a float using standard bolt layouts. A motor housing is suspended in and attached to the case, and the motor housing partly surrounds a vibrator with a support, a rotor with a shaft and weighted body, a bi-directional motor, and a coupler between the shaft and the motor. Also in the case are a variable speed controller and a remote switch, both of which are electrically connected to the motor and a battery located on or in the case. The case further includes a removable lid that attaches to a concrete finishing tool. | 2018-09-27 |
20180278122 | COMPACT ELECTRIC MACHINE WITH COMBINED ROTOR CARRIER AND CLUTCH HOUSING - An electric machine ( | 2018-09-27 |
20180278123 | Electric Motor Connections for Power Tools - In at least one illustrative embodiment, a power tool may comprise an electric motor comprising a rotor configured to rotate about an axis, a stator assembly including at least three windings arranged around the rotor, and at least three lugs affixed to the stator assembly, where each of the lugs is electrically coupled to one or more of the windings. The lugs may all be arranged to one side of a plane that passes through the axis. The power tool may further comprise at least three electrical wires, where each of the electrical wires is removably coupled to one of the lugs, and a control circuit configured to supply electrical power to the windings, via the electrical wires and the lugs, to drive rotation of the rotor about the axis. | 2018-09-27 |
20180278124 | SYSTEM FOR FUELING ELECTRIC POWERED HYDRAULIC FRACTURING EQUIPMENT WITH MULTIPLE FUEL SOURCES - A hydraulic fracturing system for fracturing a subterranean formation is disclosed. In an embodiment, the system can include a plurality of electric pumps fluidly connected to a well associated with the subterranean formation and powered by at least one electric motor, and configured to pump fluid into a wellbore associated with the well at a high pressure; at least one generator electrically coupled to the plurality of electric pumps so as to generate electricity for use by the plurality of electric pumps; a gas compression system fluidly coupled to the at least one generator so as to provide fuel for use by the at least one generator; and a combustible fuel vaporization system gaseously coupled to the gas compression system so as to provide at least one of vaporized fuel or gasified fuel, or a combination thereof, to the gas compression system. | 2018-09-27 |
20180278125 | METHOD AND ASSEMBLY OF AN ELECTRIC MACHINE - A method and assembly of a dry cavity oil cooled electric machine includes a housing, a shaft configured to operably couple with a source of rotational force and rotate about a rotational axis, and an exciter rotor and a permanent magnet generator rotor carried by the shaft, wherein the exciter rotor and the permanent magnet generator rotor rotate relative to the housing, which provides such a construction of dry cavity generators that have high efficiency and high power density. | 2018-09-27 |
20180278126 | ROTOR ENDPLATE FOR ELECTRIC MACHINE - An electric machine is provided. The electric machine may include a rotor disposed on a shaft and an endplate. The endplate may define a coolant capture ring. The coolant capture ring may have tapered side walls that extend from an outer portion of the endplate toward the shaft at a periphery thereof. The coolant capture ring may be configured to deflect coolant captured by the coolant capture ring and expelled by the shaft due to centrifugal forces associated with the rotation of the shaft. | 2018-09-27 |
20180278127 | METHOD AND ASSEMBLY OF AN ELECTRIC MACHINE - An electric machine assembly having a main machine stator core having at least one stator post, a set of stator windings wound about the at least one stator post and having a first end and an opposing second end, a coolant inlet housing defining an inlet passage, a coolant outlet housing defining an outlet passage, proximate to the coolant inlet housing, and wherein the coolant inlet passage and the coolant outlet passage define a coolant circuit configured to receive a supply of coolant to remove heat generated in the set of stator windings. | 2018-09-27 |
20180278128 | HEATSINK AND MOTOR DRIVING DEVICE - A heatsink includes: a heatsink main body; a flange portion formed on the heatsink main body; and a filter plate detachably attached to an end portion on an inlet side of the heatsink main body. In the state where the filter plate is attached to the end portion on the inlet side of the heatsink main body, an outer shape of the filter plate is larger than an outer shape of the end portion on the inlet side of the heatsink main body. An insertion hole formed in the flange portion allows insertion of the filter plate to be inserted. A flange is formed on the filter plate and at an end portion on a side opposite to a forefront end of the filter plate in an insertion direction. | 2018-09-27 |
20180278129 | Brush Assembly - A brush assembly for a brush motor includes a support member, brush holders, at least four brushes respectively mounted to the brush holders, and first and second motor terminals for connecting with an external power supply. A first filter circuit is connected between the first motor terminal and corresponding first brushes. A second filter circuit is connected between the second motor terminal and corresponding second brushes. The first and second motor terminals and the first and second filter circuits are mounted in a region defined by two corresponding adjacent brushes forming an angle greater than 60 degrees but less than 180 degrees. | 2018-09-27 |
20180278130 | BRUSHLESS MOTOR - A brushless motor includes: a rotor including a magnet with polarization directions arranged so as to be alternatingly inverted along a circumferential direction centered about a rotation shaft, the rotor being attached to a housing so as to be capable of rotating with the rotation shaft serving as the center of rotation; a stator including multiple coils arranged along the circumferential direction centered about the rotation shaft of the rotor so as to oppose the magnet, the stator causing the rotor to rotate due to interaction between a magnetic field generated by the magnet and magnetic fields generated by the coils due to current flowing in the coils; at least one rotation angle sensor that detects the rotation angle of the rotor; and a protection portion provided at a location farther from the rotation shaft than each rotation angle sensor and formed by a grounded conductor. | 2018-09-27 |
20180278131 | Rotor of Brushed Motor and Brushed Motor - Provided is a rotor of a brushed motor capable of reducing the occurrence of contamination during press-fitting of a commutator onto a knurling and reducing defect factors due to rotor contamination to improve productivity. In a rotor of a brushed motor having a commutator press-fitted onto a knurling of a shaft, an inclined surface is provided on an inner circumferential side of the commutator, and an angle of the inclined surface is configured to be smaller than an angle of an axial end portion of the knurling. The knurling may be configured to be at a position different from a shaft stepped end surface of the shaft and the knurling may be configured to be positioned axially inward of the commutator from an end surface of the commutator. | 2018-09-27 |
20180278132 | METHOD AND APPARATUS FOR MANUFACTURING ROTOR OF ELECTRIC MOTOR - A method and an apparatus for manufacturing a rotor of an electric motor are provided to obtain an electric motor with high efficiency. To this end, a rotor is magnetized by using a magnetizing device. The rotor includes a rotor magnet disposed in the circumferential direction of a rotor shaft, and a position detecting magnet disposed side-by-side with the rotor magnet with respect to the axial direction of the rotor shaft. The magnetizing device includes a rotor-magnet magnetizing yoke and a position-detecting-magnet magnetizing yoke that generate two magnetic fields. The two magnetic fields each have unlike poles arranged alternately in the circumferential direction and have a phase difference relative to each other in the circumferential direction. A phase difference is thus provided between the poles of the rotor magnet and the poles of the position detecting magnet. | 2018-09-27 |
20180278133 | AXIAL MOTOR/GENERATOR HAVING MULTIPLE INLINE STATORS AND ROTORS WITH STACKED/LAYERED PERMANENT MAGNETS, COILS, AND A CONTROLLER - An axial electric motor/generator having an inline stator and an inline rotor is provided. In one exemplary embodiment, a system comprises a housing, a shaft, and a slice assembly disposed about the shaft. The slice assembly includes a rotor assembly having a rotor plate and a set of isolated permanent magnets. A magnetic flux of each permanent magnet flows in an opposite direction to that of each adjacent permanent magnet. The slice assembly also includes a stator assembly having a stator plate and a set of isolated coil assemblies. Each coil assembly has an insulated wire wound about a metal core. The wound wire is normal to the magnetic flux of each permanent magnet when proximate the corresponding coil assembly. At least one of the set of isolated coil assemblies is configurable to output electrical power while the shaft is rotating or to input electrical power to rotate the shaft. | 2018-09-27 |
20180278134 | CIRCUMFERENTIAL FLUX ELECTRIC MACHINE WITH FIELD WEAKENING MECHANISMS AND METHODS OF USE - There are presented various embodiments disclosed in this application, including methods and systems of arranging permanent magnets to switch from a first configuration designed for a first torque output to a second configuration designed for a second torque output. | 2018-09-27 |
20180278135 | ELECTRIC DRIVE DEVICE - This invention is concerning connecting members which connect a motor and inverters and which are arranged symmetrically such that magnetic fields produced by three-phase alternating current flowing in the connecting members cancel each other out and are reduced at the position of a magnetic sensor, and furthermore the connecting members are arranged such that Fsum=sin(2θa+π/4)−sin(2θb−π/12)+sin(2θc−5π/12), and Fdiff=sin(2θa−π/4)−sin(2θb+π/12)+sin(2θc+5π/12) satisfy relationships Fsum2018-09-27 | |
20180278136 | LINEAR VIBRATION MOTOR - A linear vibration motor comprises: a movable element that comprises a magnet portion, a weight portion, and a yoke; a frame for enclosing the movable element; a coil, secured to the frame, for applying a driving force to the magnet portion so as to cause the movable element to undergo reciprocating vibration along the axial direction; and an elastic member for applying, to the movable element, an elastic force that repels the driving force that is applied to the magnet portion, wherein: a magnetic material portion (a magnetic material piece) that extend along the direction of vibration of the movable element is provided on an inner surface of the frame, and the yoke has a raised portion near the magnetic material portion (the magnetic material piece). | 2018-09-27 |
20180278137 | LINEAR VIBRATION MOTOR - A linear vibration motor, comprising a housing, a stator, a vibrator, and an elastic support member ( | 2018-09-27 |
20180278138 | LINEAR ACTUATOR - A linear actuator includes, a first tube provided with a plurality of coils placed thereinside, the plurality of coils being held by a tubular yoke; a rod movable in an axial direction inside the yoke; and a plurality of permanent magnets held by the rod while being lined up in the axial direction, the plurality of permanent magnets opposing the plurality of coils. An inner circumferential surface of the first tube has a groove running in a direction of an axis line, and wires connected to the plurality of coils are housed in the groove. | 2018-09-27 |
20180278139 | Magnetic Transmission - A magnetic transmission is provided with: an inner rotor; an outer rotor; and a magnetic-field-modulating stator disposed coaxially between the inner rotor and the outer rotor. The inner rotor is provided with a first magnet array and a second magnet array arranged in the direction of the central axis and disposed at different pitches along the circumferential direction. The outer rotor is provided with a magnet array disposed along the circumferential direction. The magnetic-field-modulating stator is provided with a first magnetic body array and a second magnetic body array opposing the first magnet array and the second magnet array, respectively. Further, by moving the inner rotor and the magnetic-field-modulating stator in the direction of the central axis while holding the opposing relationship between the first magnetic body array and the second magnetic body array, and the first magnet array and the second magnet array, the position where the outer rotor, and the first magnet array and the second magnet array oppose each other is changed continuously. | 2018-09-27 |
20180278140 | SOFT-START SWITCH CIRCUIT - One example includes a switch circuit. The switch circuit includes a transistor configured to activate in response to an activation voltage at an activation terminal of the transistor. The switch circuit also includes a current source coupled to the activation terminal and being configured to generate an activation current. The switch circuit further includes a driver control circuit interconnecting the activation terminal and a voltage rail. The driver control circuit includes digital counter logic configured to cycle through a predetermined number of count values based on an oscillator signal. The driver control circuit is configured to adjust an amplitude of the activation voltage at each of the predetermined number of count values based on the activation current to provide a soft-start activation of the transistor. | 2018-09-27 |
20180278141 | POWER CONVERSION DEVICE AND POWER CONVERSION SYSTEM - A power conversion device includes: a first power conversion circuit that converts power inputted from outside and outputs the converted power to a second power conversion circuit connected to the first power conversion circuit via a DC link, which outputs the converted power to a load; smoothing capacitors provided in an output part of the first power conversion circuit and an input part of the second power conversion circuit; a first and second common mode current extraction circuits provided in an input part of the first power conversion and second power conversion circuits; and a virtual neutral potential line that connects the first and second common mode current extraction circuits; a DC link filter circuit that includes a Y-shaped capacitor connected between the DC link part and the virtual neutral potential line. | 2018-09-27 |
20180278142 | CHOPPER ASSEMBLY AND CONTROLLING METHOD THEREOF - A chopper assembly including at least two chopper units, and a controlling unit configured to generate a control signal for controlling an activation of the corresponding chopper unit in cycle. The activations of the at least two chopper units are controlled by the controlling unit to be either initially offset by a phase shift or adjusted to have a phase shift after a predefined time duration, the phase shift indicating a time difference between rising edges or between falling edges of respective pulses of different signals. The chopper assembly according to the present disclosure effectively mitigates the negative impact to various components within the circuit. Moreover, by controlling the duty cycles of the control signals, loads of each of the resistors will be equal. | 2018-09-27 |
20180278143 | INVERTER SYSTEM AND METHOD OF CONTROLLING THE SAME - An inverter system includes a rectifier configured to convert a 3-phase AC voltage into a DC voltage, a DC link capacitor configured to smooth the DC voltage into a DC link voltage, an inverter unit configured to convert the DC link voltage into an AC voltage and to output the AC voltage to a motor, and a controller configured to control operation of the inverter unit. The controller performs control to switch the inverter unit to a zero vector when overload is applied during operation of the inverter unit. | 2018-09-27 |
20180278144 | POWER CONVERSION DEVICE - During regenerative control of an inverter circuit, when a path between a DC power supply and a smoothing capacitor is in a disconnection state, a control circuit of a power conversion device performs control while switching between first control in which upper switching elements within the inverter circuit are turned on and all lower switching elements are turned off and second control in which the lower switching elements are turned on and all the upper switching elements are turned off, every predetermined switching period. | 2018-09-27 |
20180278145 | Overboost Suppressing Circuit for Boost Converter - An overboost suppressing circuit for a boost converter that is controlled by a control circuit to boost an input voltage to a prescribed target voltage, the overboost suppressing circuit. The overboost suppressing circuit includes a detection unit that detects an overboost in which a voltage is boosted in excess of the prescribed target voltage of boost converter; and a voltage boost stop unit that, when the overboost is detected by detection unit, has the control circuit stop a voltage boost operation of boost converter, to clamp an output voltage of boost converter to a voltage higher than the prescribed target voltage and lower than or equal to a withstand voltage value of a peripheral circuit element which is a load. | 2018-09-27 |
20180278146 | FAULT TOLERANT INVERTER OR CONTROLLED RECTIFIER SYSTEM - A fault tolerant inverter or controlled rectifier system includes a first leg having at least one switch device, a spare leg having at least one spare switch device, a spare leg connect switch associated with the spare leg and the first leg, a fault detection sub-system for detecting a fault in the first leg and outputting a signal on detection of a fault in the first leg, and a leg selection control sub-system that receives the signal output by the fault detection sub-system and controls the operation of the spare leg connect switch in accordance with the output signal, such that on detection of a fault the spare leg may be activated to take over the operation of the first leg. | 2018-09-27 |
20180278147 | PWM Controlled Loop with Anti-Windup Protection - A system to regulate an output voltage based on a reference voltage is described. The system has an error amplifier to determine an error voltage by cumulating a deviation of a feedback voltage from the reference voltage, wherein the feedback voltage is indicative of the output voltage. The system has a PWM unit to generate a PWM control signal based on the error voltage. In addition, the system has a voltage setting unit to set the output voltage based on the PWM control signal. The system has a saturation detection unit to detect a saturation situation of the system. . In addition, the system has a clamping means to interrupt a further build-up of the error voltage in the saturated direction while allowing a modification of the error voltage in an opposite direction, opposite to the saturated direction, if a saturation situation is detected. | 2018-09-27 |
20180278148 | METHOD FOR CONTROLLING INVERTER - Disclosed is a method for controlling an inverter. The method includes detecting an output current from an inverter to determine a software over-current suppression (S/W OCS) level according to an output frequency of the output current. | 2018-09-27 |
20180278149 | POWER FACTOR CORRECTING DEVICE, BIDIRECTIONAL AC/DC CONVERSION APPARATUS AND COMPUTER PROGRAM - A power factor correcting device that controls switching of a converter that converts AC voltage inputted via a circuit with a capacitor through which reactive current flows into DC voltage calculates the magnitude of the reactive current based on the magnitude of the AC voltage inputted to the converter and the capacitance of the capacitor and corrects a power factor including the circuit, calculates a target value for a phase delay of the AC current with respect to the AC voltage based on the calculated magnitude and the magnitude of the AC current inputted to the converter or the magnitude of the DC power outputted from the converter, and calculates an operation amount for delaying the phase of the switching based on the calculated target value. | 2018-09-27 |
20180278150 | POWER FACTOR CORRECTION CIRCUIT, CONTROL METHOD AND CONTROLLER - A power factor correction circuit can include: a power meter configured to measure a power factor at an input port; a switching-type regulator that is controllable by a switching control signal in order to adjust the power factor of an input AC power; an EMI filter disposed between the switching-type regulator and the input port; and a controller configured to generate the switching control signal to maximize the power factor by adjusting a current reference signal according to a measured power factor, where the current reference signal represents an expected inductor current of the switching-type regulator. | 2018-09-27 |
20180278151 | CONTROL UNIT OF A SWITCHING CONVERTER OPERATING IN DISCONTINUOUS-CONDUCTION AND PEAK-CURRENT-CONTROL MODE - A control unit for a switching converter has an inductor element coupled to an input and a switch element coupled to the inductor element. The control unit generates a command signal with a switching period to control the switching of the switch element and to determine a first time period where an inductor current is flowing in the inductor element for storing energy and a second time period where energy is transferred to a load. The second time period has an end portion where the inductor current drops to zero. The control unit determines the duration of the first time period based on a comparison between a sensing voltage, indicative of the peak value of the inductor current, and a reference voltage. A pre-distortion stage pre-distorts the reference voltage in order to compensate for a corresponding distortion on an input current of the converter compared to a desired sinusoidal characteristic. | 2018-09-27 |
20180278152 | CONTROL UNIT OF A SWITCHING CONVERTER OPERATING IN CONTINUOUS-CONDUCTION AND PEAK-CURRENT-CONTROL MODE - A control unit for a switching converter has an inductor element coupled to an input and a switch element coupled to the inductor element and generates a command signal having a switching period to switch the switch element and determine a first time period in which an inductor current is flowing in the inductor element for storing energy and a second time period in which energy is transferred to a load. An input current is distorted relative to a sinusoid by a distortion factor caused by current ripple on the inductor current. The duration of the first time period is determined based on a comparison between a peak value of the inductor current and a current reference that is a function of an output voltage of said voltage converter. A reference modification stage modifies one of the current reference and sensed value of the inductor current to compensate for distortion introduced by the distortion factor on the input current. | 2018-09-27 |
20180278153 | SOFT-SWITCHING CONTROL CIRCUIT OF BOOST-TYPE PFC CONVERTER - A soft-switching control circuit of a boost-type PFC converter is provided. The boost-type PFC converter is a three-phase six-switch boost-type PFC converter, which includes six primary switching transistors and an auxiliary switching transistor. The control circuit includes a primary switch control circuit configured to output driving signals for the primary switching transistors by a one-cycle control algorithm to drive two of the primary switching transistors, and an auxiliary switch control circuit configured to provide a reset signal to the primary switch control circuit for governing a command from the primary switch control circuit to the primary switching transistors. The auxiliary switch control circuit outputs a driving signal for the auxiliary switching transistor to control the auxiliary switching transistor. The primary switch control circuit includes a section selecting circuit, an integrating circuit, a merging circuit and a comparing circuit. Therefore, the disclosure can reduce cost with the simple control. | 2018-09-27 |
20180278154 | SWITCHING POWER SUPPLY APPARATUS, DRIVING METHOD FOR SWITCHING POWER SUPPLY, AND DRIVING PROGRAM FOR SWITCHING POWER SUPPLY - The present invention is aimed at providing a switching power supply apparatus enabling to avoid enhancement of noise of a specific frequency component. The present invention is a switching power supply apparatus provided with: a switching power supply configured to perform switching of input from a primary power source and thereby output a secondary power source; and a noise frequency analysis device configured to analyze frequency components of noise included in output of the primary power source or of the secondary power source, and accordingly cause the switching power supply to perform switching at a different frequency from a frequency of a maximum noise amplitude among the frequency components. | 2018-09-27 |
20180278155 | SUPPLY SYSTEM TO A SET OF LOADS CONNECTED IN PARALLEL TO A DIRECT CURRENT SUPPLY BUS - The invention relates to a supply system for a plurality of loads connected in parallel to a direct current supply bus. The supply system includes a DC supply bus and a plurality of supply lines connected in parallel to the supply bus and supplying the said loads. The supply system includes uncoupling and damping means that is adapted to decrease the unipolar signals travelling within the supply system while the loads are being supplied. The uncoupling and damping means includes at least one inductance arranged in series in at least one of the supply lines. Protective means (are also provided for protection in the event of a fault. | 2018-09-27 |
20180278156 | DC-DC CONVERTER - According to one embodiment, a DC-DC converter includes a signal generator configured to output a first PWM signal having arbitrary amplitude and a duty cycle established based on an input voltage and an output voltage, a driver configured to output a second PWM signal being in phase with the first PWM signal and having amplitude of the input voltage based on the first PWM signal, a filter configured to extract a DC component from the second PWM signal, and a switch configured to supply an output of the filter to the signal generator in response to a first control signal. | 2018-09-27 |
20180278157 | DIRECT CURRENT POWER CONTROLLER - What is disclosed is a DC power controller capable of regulating power across a plurality of DC power output channels in response to a user defined output curve. The amount of power generated per channel is determined by a single signal input utilized by a processor in DC power controller to determine the position on the user defined output curve where each DC power output is set forth for each channel. | 2018-09-27 |
20180278158 | BIDIRECTIONAL DC-DC CONVERTER - The present invention provides a bidirectional DC-DC converter. The bidirectional DC-DC converter includes a first switching tube connected in antiparallel to a first diode; a second switching tube connected in antiparallel to a second diode; a third switching tube connected in antiparallel to a third diode; a fourth switching tube connected in antiparallel to a fourth diode; and a first inductor and a second inductor, where an anode of the first diode and a cathode of the second diode are connected to form a first node, an anode of the second diode and a cathode of the third diode are connected to a neutral point, an anode of the third diode and a cathode of the fourth diode are connected to form a second node, and one end of the first inductor and one end of the second inductor are respectively connected to the first node and the second node. The bidirectional DC-DC converter in the present invention has high conversion efficiency. | 2018-09-27 |
20180278159 | SEMICONDUCTOR DEVICE - According to embodiments, a semiconductor device includes a first switching element in which a first reference voltage is input to a gate; a second switching element in which a first voltage is input to a gate; a third switching element to which the first switching element is in Darlington connection; a fourth switching element to which the second switching element is in Darlington connection; a first current mirror circuit to regulate currents flowing in the third and fourth switching elements; a fifth switching element switched between ON and OFF states based on a difference between the first reference and the first voltages; a constant current circuit; a second current mirror circuit; and a voltage setting resistance element between a source of the first switching element and a gate of the third switching element or between a source of the second switching element and a gate of the fourth switching element. | 2018-09-27 |
20180278160 | Method and Apparatus to Facilitate Calibrating a Loop Error Amplifier in an Integrated Circuit - An integrated circuit having at least one electrically-controlled control loop that includes one or more loop error amplifiers also includes an analog-to-digital converter having both an input that operably couples to two inputs of each loop error amplifier and an output that couples to an off-chip hardware component comprising a control circuit. This control circuit reads digital versions that correspond to the loop error amplifier inputs. When a particular first input is greater than a second input, the control circuit sources a calibration signal to modify and offset for the loop error amplifier in a first direction. When the first input is less than the second input, the control circuit sources a calibration signal to modify the offset for the loop error amplifier in a second direction that is different from the aforementioned first direction. By one approach the control circuit also controls a sampling rate of the analog-to-digital converter. | 2018-09-27 |
20180278161 | POWER CONVERTER WITH CONTROLLABLE DC OFFSET - An electrical power conversion system includes an alternating current (AC)-to-direct current (DC) power converter that is configured to convert power between AC power and DC power. The AC-to-DC power converter includes switching legs that each connect to a phase of the AC power. Each of the switching legs includes two electronic devices connected in series with one another between a positive DC bus terminal and a negative DC bus terminal. The electrical power conversion system also includes a DC-to-DC power converter that is configured to convert power between the DC bus power and DC terminal power via a positive DC terminal and a negative DC terminal. The DC-to-DC power converter is configured to control a differential voltage between the positive and negative DC terminals and a common-mode voltage that is between a neutral of the AC power and each of the positive and negative DC terminals. | 2018-09-27 |
20180278162 | COMBINING TEMPERATURE MONITORING AND TRUE DIFFERENT CURRENT SENSING IN A MULTIPHASE VOLTAGE REGULATOR - According to certain aspects, the present embodiments are directed to techniques for providing the ability to monitor one or more operational parameters of a voltage regulator. In embodiments, the voltage regulator is a multiphase voltage regulator having a plurality of power stages corresponding to each respective phase. In these and other embodiments, the operational parameters include one or both of a phase current and a phase temperature. According to certain additional aspects, the present embodiments provide the ability to monitor the respective phase current output and phase temperature of each phase independently. According to further aspects, this ability to monitor the operational parameters is achieved while minimizing circuit complexity. | 2018-09-27 |
20180278163 | DC/DC CONVERTER USING MULTI-TOPOLOGY - The present invention relates to a DC/DC converter which has a full bridge configured in a switching unit and uses a half bridge, which is subordinate to the full bridge in view of circuit configuration, to automatically select such a multi-topology. More particularly, the present invention relates to a DC/DC converter using a multi-topology, which receives, in real time, feedback of an output voltage charged to a battery, operates using the half bridge when the output voltage charged to the battery is lower than a reference voltage, and operates using the full bridge when the output voltage charged to the battery is equal to or higher than the reference voltage, so as to output a wider range of voltage. | 2018-09-27 |
20180278164 | SWITCHED-MODE POWER SUPPLY AND METHOD FOR OPERATING A SWITCHED-MODE POWER SUPPLY - A switch-mode power supply includes a control element in a primary circuit for controlling a transformer for transmitting electric energy from the primary circuit to a secondary circuit, a first regulating element in the secondary circuit for regulating an electric output variable of the secondary circuit, and a second regulating element in the primary circuit for regulating an electric controlled variable of the control element as a function of a temperature of the primary circuit, the second regulating element being thermally coupled to an element of the primary circuit whose temperature is to be ascertained. | 2018-09-27 |
20180278165 | LED DRIVING DEVICE - An LED driving device includes an LED string including at least first and second LED elements connected in series, first and second channels coupled to output nodes of the first and second LED elements, respectively, first and second regulators to regulate a current flowing through the first and second channels in response to first and second control voltages, respectively, and a control voltage generating circuit to generate the first and second control voltages based on a difference between a reference voltage and a comparative voltage, the comparative voltage being generated based on a sensing voltage, the sensing voltage corresponding to an LED current flowing through the LED string. The control voltage generating circuit includes a reference voltage generator to generate the reference voltage based on an input voltage and the dimming signal, the input voltage being supplied to the LED string, the dimming signal controlling dimming of the LED string. | 2018-09-27 |
20180278166 | Device for Producing Constant Voltage (Variants) - The proposed variant devices are intended for producing a highly stable constant voltage in a wide range of output voltages. A highly stable constant voltage is produced by generating a control signal which adjusts the relative pulse duration as a constant voltage is converted into a pulse voltage, taking into account a constant voltage setpoint value in the load, while also stabilizing a constant current and reducing the pulse components in the constant current through the use of negative feedback. | 2018-09-27 |
20180278167 | POWER CONVERTER CIRCUIT WITH A MAIN CONVERTER AND AN AUXILIARY CONVERTER - Examples of power converter circuits and power conversion methods are disclosed. One example of a power converter circuit includes an input configured to receive an input voltage and an output configured to provide an output voltage; a main converter coupled between a main converter input and the output and comprising a first winding and a second winding that are inductively coupled; and an auxiliary converter comprising an auxiliary converter input coupled to a third winding and an auxiliary converter output, wherein the third winding is inductively coupled with the first winding and the second winding. The auxiliary converter output is coupled between the input and the main converter input. | 2018-09-27 |
20180278168 | APPARATUS TO REALIZE FAST BATTERY CHARGING AND MOTOR DRIVING FOR ELECTRIC VEHICLES USING ONE AC/DC CONVERTER - An apparatus includes a controller, a switching block, and a three-phase bidirectional AC/DC converter. The switching block has a first interface connected to a power grid, a second interface connected to an electric motor, and a third interface connected to the three-phase bidirectional AC/DC converter that includes first, second, and third single-phase AC/DC conversion modules, and which have inputs and outputs joined at an output node, and a respective transformer configured to provide electrical isolation. In a first mode of operation, the switching block connects the power grid to the AC/DC converter for charging a battery connected to the output node and disconnects the electric motor. In a second mode of operation, the switching block disconnects the power grid and connects the electric motor to the AC/DC converter which is controlled to convert DC power drawn from the battery to energize the electric motor. | 2018-09-27 |
20180278169 | PHASE-SHIFTED FULL-BRIDGE TOPOLOGY WITH CURRENT INJECTION - Methods for operation of a phase-shifted full-bridge topology power converter in a true soft-switching mode, regardless of the value of the leakage inductance of the converter. To achieve this, a process of discharge of the parasitic capacitances across the switching elements from a part of the resonant leg starts after the entire, total energy in the leakage inductance is used, and the voltage across the primary switching elements reaches the specific lower level. | 2018-09-27 |
20180278170 | POWER GENERATION SYSTEM - A power generation system in an embodiment includes a power generator, a rectifying and smoothing circuit, a converter, a voltage measurement unit, and a switch. The power generator outputs AC power. The rectifying and smoothing circuit converts the AC power to DC power and smooths the DC power. The voltage measurement unit measures an average voltage of the AC power or a voltage of the smoothed DC power. The converter transforms the smoothed DC power. The switch is disposed between the rectifying and smoothing circuit and the converter, and becomes an ON state when the measured voltage becomes a reference voltage or higher. | 2018-09-27 |
20180278171 | MODULAR CONFIGURABLE ADJUSTABLE-SPEED DRIVE - Presently disclosed embodiments are directed to an adjustable-speed drive comprising a transformer module and an inverter module configured for installation in either of a side-by-side or stacked configurations. The disclosed embodiments utilize a modular design for the transformer and inverter modules. Thus, the adjustable-speed drive is capable of being installed in either of a side-by-side configuration or a stacked configuration. This modular design allows for installation at a site in accordance with the space limitations of any given location. | 2018-09-27 |
20180278172 | Power Conversion Device - The effect of decreasing the inductance, which cancels the recovery current generated upon the switching operation of the switching element, is enhanced. Provided are a circuit body which has first and second switching elements constituting upper and lower arm circuits and a conductor portions, a metal member, and a relay conductor portion which is arranged to face the metal member with the circuit body interposed therebetween and electrically connected to a terminal connected to any one of conductor portions. An eddy current is induced at the metal member and the relay conductor portion by the recovery current flowing through the conductor portions according to the switching operation of the first and second switching elements. | 2018-09-27 |
20180278173 | SWITCHED MODE POWER CONVERTER CONFIGURED TO CONTROL AT LEAST ONE PHASE OF A POLYPHASE ELECTRICAL RECEIVER WITH AT LEAST THREE PHASES - A switched-mode power converter configured to control at least one phase of a polyphase electrical receiver with at least three phases, comprising at least one block of two converter arms, wherein a half-arm of a converter arm comprises: a first set of P≥2 switches in series; a second set of P≥2 switches in series; and a third set of diodes, arranged between the first set and the second set, comprising M≥2 subsets in series, indexed i∈[[1; M]], respectively comprising N | 2018-09-27 |
20180278174 | LLC RESONANT CONVERT WITH INTEGRATED MAGNETICS - Disclosed examples include integrated magnetic circuits for LLC resonant converters, including an inductor cell and multiple transformer cells with cores arranged in a stack structure. The individual transformer cells include primary and secondary windings extending around the transformer core structure, and a secondary transistor connected in series with the secondary winding. One or more windings are shaped near core stack gaps to reduce core and winding losses. The inductor cell includes an inductor winding extending around the inductor core structure to provide the inductor, and the capacitor. The inductor cell is arranged in the stack structure with the transformer cells to magnetically couple the transformer primary windings, the inductor winding and the transformer secondary windings in a single magnetic circuit to cancel cell to cell flux. | 2018-09-27 |
20180278175 | MULTILEVEL INVERTER - An inverter circuit, coupled to a two-level DC voltage supply and being able to form a five-level output voltage is described, together with a method for operating the inverter circuit. The inverter circuit comprises a series connection of six unidirectional power semiconductor switches, each coupled to an antiparallel diode, between the positive and negative nodes of the supplying DC voltage. The inverter circuit further comprises a series connection of two internal capacitors between the cathodes of the first and the fifth switches of the series connection, the connection point of the capacitors being coupled to the internal node of the inverter circuit. In use, the unidirectional power semiconductor switches are controlled in order to set the voltage of the output of the inverter circuit. | 2018-09-27 |
20180278176 | POWER CONVERSION DEVICE - A power conversion device which converts electric power by having a power semiconductor element perform a switching operation includes voltage detection means for detecting a common mode voltage generated in the switching operation of the power semiconductor element, a voltage control power supply which generates a voltage which is opposite in polarity to and as high as the common mode voltage with a circuit which amplifies power of the common mode voltage detected by the voltage detection means, and voltage superimposition means for canceling the common mode voltage not lower than a switching frequency generated in the switching operation of the power semiconductor element, by superimposing the voltage generated by the voltage control power supply on an output from the power conversion device. | 2018-09-27 |
20180278177 | Balancer Circuit - An apparatus includes a DC-to-AC converter comprising a first output terminal and a second output terminal. The apparatus also includes a DC-to-DC converter comprising a third output. The DC-to-AC converter is configured to receive a DC input voltage from a DC power source, and to produce a first alternating output voltage at the first output terminal, and a second alternating output voltage at the second output terminal. The DC-to-DC converter is configured receive a DC input voltage from the DC power source, and to step down the DC input voltage at the third output. | 2018-09-27 |
20180278178 | POWER CONVERSION DEVICE - A power conversion device that includes an inverter circuit in which arms are connected in parallel to each other between a DC positive terminal and a DC negative terminal in accordance with a number of phases of alternating currents of a plurality of phases, the arms for the respective phases each including two switch sections that are connected in series and to be brought into conduction in an on state and out of conduction in an off state, the power conversion device being configured to convert electric power between DC power and AC power of the plurality of phases while a connection point between the two switch sections of each of the arms is set as an AC input or output point of each phase. | 2018-09-27 |
20180278179 | Method for Actuating a Multi-phase Synchronous Converter - A multi-phase synchronous converter consisting of a plurality of half bridges which in turn consist of an upper power switch and a lower power switch, the converter being actuated by a pulse width modulation dependent on a predetermined pulse duty cycle in the range of zero to one hundred percent. The multi-phase synchronous converter generates an output current and is operated in a normal mode in which the power switches switch with a normal switching period defined by a predetermined normal switching frequency, and a normal pulse duration dependent on the actual pulse duty cycle. As soon as the pulse duty cycle exceeds an upper duty cycle threshold or falls below a lower duty cycle threshold, the multi-phase synchronous converter is switched from the normal mode into an operating mode in which at least one of the power switches of at least one half bridge is deactivated. | 2018-09-27 |
20180278180 | POWER CONVERSION SYSTEM - A power conversion system includes: an output terminal connected to a load; a switch configured to be turned on in a first case that an AC voltage from the AC power supply is normal, and to be turned off in a second case that the AC voltage from the AC power supply is abnormal; a power converter configured to convert the AC power from the AC power supply into DC power and store the DC power in a storage battery in the first case, and to convert the DC power in the storage battery into AC power and output the AC power to the output terminal in the second case; and a line-commutated inverter configured to operate in synchronization with an AC voltage appearing at the output terminal, and convert the DC power supplied from a fuel cell into AC power and output the AC power to the output terminal. | 2018-09-27 |
20180278181 | CONTROL ARCHITECTURE FOR AC-DC AND DC-AC CONVERSION CAPABLE OF BIDIRECTIONAL ACTIVE AND REACTIVE POWER PROCESSING - A control architecture that overcomes limitations of conventional ac-dc converters and enables bidirectional active and reactive power processing is provided. In one implementation, for example, this may be achieved through the use of unrectified sensed ac signals in the generation of the control commands for the converter. This control architecture, in this example implementation, eliminates or at least reduces zero crossing distortions in the ac current of the converter even with relatively low bandwidth controllers. The concept can be applied to different power stage topologies. | 2018-09-27 |
20180278182 | STORED ENERGY RELEASE TRIGGERED BY PIEZOELECTRIC ELEMENT - A stored energy release comprises an actuatable member slidably received within a housing. The actuatable member has an extended orientation wherein a portion of the actuatable member extends outwardly from the housing and a retracted orientation wherein the actuatable member resides within the housing. A biasing member is located between the actuatable member and the housing biases the actuatable member to the retracted orientation. A shaft is within the housing with the actuatable member configured for sliding movement along the shaft. A retaining member is located between the actuatable member and the shaft. The retaining member maintains the actuatable member in the extended orientation whereby potential energy is stored within the biasing member. A piezoelectric element selectively engages the retaining member to disable the retaining member and release the stored potential energy within the biasing member to place the actuatable member in the retracted orientation. | 2018-09-27 |
20180278183 | CONTROL SYSTEM, CONTROLLER, AND CONTROL METHOD FOR WOUND INDUCTION MACHINE - According to one embodiment, a control system includes a chopper, a short-circuit unit, a voltage detector circuit, and a controller. The chopper reduces a direct current voltage between a converter connected to a stator in a wound induction machine and an inverter connected to a rotor in the wound induction machine. The short-circuit unit shorts a wire used for connection between the rotor and the inverter and the voltage detector circuit is to detect the direct current voltage. The controller causes driving the chopper and, at the same time, outputting from the inverter an alternating current over which a direct current component is superimposed when a voltage value exceeds a first predetermined value, and causes driving the short-circuit unit and, at the same time, halting the inverter when the voltage value exceeds a second predetermined value. | 2018-09-27 |
20180278184 | Synchronous Machine Module, Vehicle Drive and Vehicle - The synchronous machine module includes a synchronous machine and a rotational speed controller for controlling a rotational speed of the synchronous machine, which rotational speed controller has a detector for detecting a variable which is formed by the effective power or is dependent thereon. The rotational speed controller is designed to set the rotational speed of the synchronous machine and/or the time profile thereof as a function of the detected variable and/or its time profile. The vehicle drive has such a synchronous machine module and a power generator, which in order to supply the synchronous machine module is connected thereto. The vehicle is, in particular, an aircraft and has such a vehicle drive and/or such a synchronous machine module. | 2018-09-27 |
20180278185 | METHODS AND APPARATUS FOR THREE-PHASE MOTOR CONTROL WITH ERROR COMPENSATION - Method and apparatus for providing error compensation for a magnetic field sensing element in a three-phase motor. In embodiments, a driving angle is determined from zero-crossings of the magnet pole-pairs and error compensation levels for the pole-pairs is determined to reduce distortions in the motor current waveform. | 2018-09-27 |
20180278186 | AXIAL FLUX MOTOR WITH BUILT-IN OPTICAL ENCODER - An axial flux motor has a rotor mounted about an axis of rotation. Permanent magnets are mounted on a first axial face of the rotor and a predetermined encoder pattern is provided on the surface of a second axial face of the rotor. A stator is positioned on one side of the rotor adjacent to the first axial face of the rotor. A sensor is mounted on the other side of the rotor adjacent to the second axial face of the rotor. The sensor outputs signals corresponding to the encoder pattern on the surface of the second axial face of the rotor. A motor control system is coupled to receive the signals from the sensor and calculates a speed of rotation of the rotor based on the signals from the sensor. In addition, the motor control system may calculate rotor position information, relative or absolute, based on the encoder pattern. | 2018-09-27 |
20180278187 | LOAD-ADAPTIVE SMOOTH STARTUP METHOD FOR SENSORLESS FIELD-ORIENTED CONTROL OF PERMANENT MAGNET SYNCHRONOUS MOTORS - A field oriented control (FOC) system and method provides smooth field-oriented startup for three-phase sensorless permanent magnet synchronous motors (PMSMs) despite the absence of load information. The system uses the rotor flux projection on the d- or q-axis to determine whether the stator flux current reference being applied during reference startup phase is sufficient to spin the PMSM, thereby providing smooth operation during the reference startup phase and saving energy relative to applying rated current. The system also determines a suitable initial value for the stator torque current reference to use at the start of closed-loop sensorless FOC control mode based on an angle difference between the reference and estimated angles. Since this angle difference is reflective of the load on the PMSM, the selected initial value allows the system to achieve a smooth transition from reference startup mode to closed-loop sensorless FOC control mode. | 2018-09-27 |
20180278188 | TORSIONAL DAMPING FOR GENERATORS - An apparatus and method for a generator assembly for a drive train such as a rotatable turbine engine assembly. The generator assembly includes at least first and second generators mechanically coupled to the drive train. First and second dampers are operably coupled to the first and second generators, respectively, to selectively damp the first and second generators. Damping the first and second generators can reduce or eliminate both common mode and differential mode torsional oscillations from the generators to the drive train. | 2018-09-27 |
20180278189 | POSITION ESTIMATION OF PERMANENT MAGNET SYNCHRONOUS MACHINES THROUGH VIBRATION INDUCED SALIENCY - Technical solutions are described herein for position estimation of permanent magnet synchronous machines through vibration induced saliency. An example permanent magnet synchronous machine (PMSM) includes a motor control system to provide input command to the motor to cause a position of the motor to change. The PMSM further includes a motor position estimation module configured to estimate the position of the motor. The estimation includes measuring a current I | 2018-09-27 |
20180278190 | CONTROLLING A MOTORIZED WHEEL - An electrically powered vehicle having software to facilitate variable control of a motorized wheel. The software can modify the manner in which electricity is provided to phases of a motor of the motorized wheel. In some aspects, the modification of electricity provided to the phases can adjust a speed and/or a torque of the motor of the motorized wheel. | 2018-09-27 |
20180278191 | CONTROL DEVICE OF AC ROTATING ELECTRICAL MACHINE - A control device of an AC rotating electrical machine includes: a midpoint potential detection unit | 2018-09-27 |
20180278192 | CONVERTER APPARATUS USING SOURCE-ACTIVATED DISCHARGE CIRCUITS - An apparatus, such as a variable frequency drive (VFD), includes a rectifier, a DC bus coupled to an output of the rectifier and at least one capacitor coupled to the DC bus. The apparatus further includes a normally-conducting switch coupled to the DC bus and configured to discharge the at least one capacitor in a conducting state and a control circuit configured to control the normally-conducting switch responsive to an input to the rectifier. The control circuit may be configured to control the normally-conducting switch responsive to a voltage at the input of the rectifier. The control circuit may include a regulator circuit having an input coupled to the input of the rectifier and a driver circuit coupled to an output of the regulator circuit and configured to drive a control terminal of the normally-conducting switch. | 2018-09-27 |
20180278193 | VARIABLE SPEED MAXIMUM POWER POINT TRACKING, SOLAR ELECTRIC MOTOR CONTROLLER FOR INDUCTION AND PERMANENT MAGNET AC MOTORS - Solar Motor Controller is an electronic device with DC power input terminals that may connect directly to solar PV panels, and output terminals that may connect directly to single or multiphase phase AC electric motors without requiring an energy storage subsystem. The Controller runs electric motors of many frequencies and is capable of interfacing to multiple voltages of solar PV panels with or without maximum power point tracking. The Controller may drive motors in water pumping, HVAC, refrigeration, compressors operation, blowers, machine tools, and many other applications; some controller applications may operate at motor speeds adjusted to conform to power available from attached solar panels. | 2018-09-27 |
20180278194 | ELECTRIC POWER CONTROL METHOD AND ELECTRIC POWER CONTROL DEVICE - An electric power control method comprising: a current measuring step; a command value calculating step; an operating step; a determining step of determining whether to change an operation period within which the operating step is performed so as to be longer than one cycle of the carrier wave or not; a first reducing step of reducing the switching operation of the switching elements in a first half cycle of the carrier wave starting from a start timing of the operation period after the change during which the carrier wave monotonously changes; a comparing step of changing a slope of the carrier wave in an intermediate period between the first half cycle of the carrier wave and a last half cycle of the carrier wave in the operation period after the change to compare the carrier wave with the duty command value in the magnitude, the comparing step performing the switching operation of the switching elements according to a result of the comparison; and a second reducing step of reducing the switching operation of the switching elements in the last half cycle of the carrier wave. | 2018-09-27 |
20180278195 | SERIALIZER-DESERIALIZER FOR MOTOR DRIVE CIRCUIT - A motor drive circuit includes a first serializer-deserializer (SER-DES) module that converts first SER-DES input signals into a first SER-DES output serial data stream. The first SER-DES input signals relate to motor control inputs or motor drive power outputs. A second SER-DES module converts a second SER-DES input serial data stream corresponding to the first SER-DES output serial data stream into second SER-DES output signals. The second SER-DES input signals relate to motor drive power outputs or motor control inputs. A serial isolation channel provides a galvanic isolation barrier between the first SER-DES module and the second SER-DES module. The serial isolation channel communicates the first SER-DES output serial data stream across the galvanic isolation barrier to provide the second SER-DES input serial data stream. | 2018-09-27 |
20180278196 | MULTI-VOLTAGE BATTERY PACK - A multi-voltage battery pack for use with tools of different operating voltages including a housing, a first string of battery cells arranged in electrical series and disposed inside the housing, the first string having a first positive voltage terminal and a first negative voltage terminal, a second string of battery cells arranged in electrical series and disposed inside the housing, the second string having a second positive voltage terminal and a second negative voltage terminal, and a power tool interface shaped and configured to interchangeably (1) mechanically and electrically couple with a first battery pack interface of a first power tool that is configured to operate at a first operating voltage, and (2) mechanically and electrically couple with a second battery pack interface of a second power tool that is configured to operate at a second operating voltage. | 2018-09-27 |
20180278197 | MOTOR CONTROL SYSTEM, MOTOR CONTROL APPARATUS, METHOD FOR CONTROLLING MOTOR, AND STATE ESTIMATOR - A motor control system includes a motor control apparatus, a motor, an environment state detector, and an operation state monitor. The motor control apparatus is configured to control feeding of driving power based on a control command. The motor is drivable by the driving power. The environment state detector is configured to detect environment state data of at least one of the motor control apparatus and the motor. The operation state monitor is configured to output, based on the environment state data, an operation margin of an operation state value of the at least one of the motor control apparatus and the motor relative to an operation rated value of the at least one of the motor control apparatus and the motor. | 2018-09-27 |
20180278198 | TILING FORMAT PHOTOVOLTAIC ARRAY SYSTEM - Building integrated photovoltaic (BIPV) systems provide for solar panel arrays that can be aesthetically pleasing and appear seamless to an observer. BIPV systems can have photovoltaic (PV) modules configured to be installed to have an appearance similar to traditional roof tiles or slate. Such tiling format PV modules have a number of solar cells appropriate to the surface area and scale of the PV modules. Non-PV tiles can be deployed alongside tiling format PV modules as part of the overall roof surface. Metal pans supporting tiling format PV modules and non-PV tile components of similar size or surface area have a functional advantage in that more areas of a roof installation can be covered by the tiling format PV modules. In some configurations, the appearance of BIPV systems can be particularly aesthetically pleasing and generally seamless to an observer. | 2018-09-27 |
20180278200 | Compact Structures and Methods for Deploying Foldable Origami Solar Arrays, Solar Sails, and Antenna Structures - The Structural Origami ARray (SOAR) concept is an extremely high performance, deployable solar array system that delivers high power output and exceeds state-of-the-art packaging efficiencies. Unlike existing Z-folding panels or rolled architectures, this approach utilizes an origami-inspired two-dimensional packaging scheme of a flexible blanket/substrate that is coupled with a simple and compact deployable supporting structure that stabilizes the array by external tension or internal support. This enables large deployed areas populated with high efficiency photovoltaic (PV) cells or antenna elements, which compactly stows in a square form factor with thin stack height that minimizes impingement on spacecraft bus internal volume. | 2018-09-27 |
20180278201 | PORTABLE SOLAR PHOTOVOLTAIC ARRAY - A portable PV module array, the modules being connected along adjacent end edges and being foldable relative to each other about the connected end edges between a closed condition and an open condition, whereby: in the closed condition, the PV modules are stacked together in a generally parallel and close facing relationship with the edges of the PV modules in general alignment, and in the open condition, the PV modules are disposed at an angle to each other so that the PV module array defines triangular configuration, and foldable movement of the PV modules from the closed condition to the open condition being restricted against movement beyond the open condition by a flexible connector that connects with a connection point associated with each of the PV modules of the PV module array and that is tensioned in the open condition and that is slack in the closed condition. | 2018-09-27 |
20180278202 | Soiling Measurement System for Photovoltaic Arrays - A system for measuring the power or energy loss in a photovoltaic array due to soiling, which is the accumulation of dust, dirt, and/or other contaminants on the surfaces of photovoltaic modules, comprising: a pair of photovoltaic reference devices placed within or near the photovoltaic array and co-planar to the modules comprising the array, wherein one reference device is a module or cell similar to those of the array and is allowed to accumulate soiling at the natural rate, and wherein the second reference device is a module or a cell and is maintained clean; and a measurement and control unit which measures and compares the electrical outputs of the soiled reference device and the clean reference device in order to determine the fraction of power lost by the soiled reference module due to soiling. | 2018-09-27 |
20180278203 | MODULAR SOLAR POWER GENERATION APPARATUS - The present disclosure relates to a modular solar power generation apparatus comprising a base plate, a light guiding unit, a plurality of connection units and a plurality of solar panels wherein: the light guiding unit is installed on the base plate; all connection units are circlewise mounted on the base plate and encircling the light guiding unit; each the solar panel, which is connected to one of the connection units, and the base plate form an angle of inclination by which each the solar panel features upward broadened widths such that any two neighboring solar panels allow their corresponding edges to be adjacent to each other and a gap in between to be narrowed for development of solar panels easily installed and maintained. | 2018-09-27 |
20180278204 | CONTACTS FOR JUNCTION BOXES ON SOLAR PANELS - A connection box with reliable and yet inexpensive contacts for solar panels to enable the use of multiple types of passive and active covers for different functionalities in the junction box built into the panel. | 2018-09-27 |
20180278205 | Systems and Methods to Reduce Field Buildup between Cells and Glass and Frame Assembly for Solar Energy Production - Systems and methods for removing charge buildup/leakage from solar modules. A discharge controller may be coupled between a solar module and a string bus of a solar array. The discharge controller is configured to disconnect the solar module from the string bus, and to connect a grounded frame to solar cells of the solar module. Since the grounded frame of the solar module is grounded, connecting the grounded frame and the solar cells allows charge buildup/leakage to discharge into ground. | 2018-09-27 |
20180278206 | PHOTOVOLTAIC POWER GENERATION SYSTEM AND MALFUNCTION DETECTION METHOD THEREFOR - A photovoltaic power generation system includes at least one photovoltaic power generation microgrid and a central server configured to communicate with the photovoltaic power generation microgrid via Internet. The photovoltaic power generation microgrid includes a plurality of photovoltaic power generation nodes, each of the photovoltaic power generation nodes including a photovoltaic power generation module, a sensor module configured to collect a status parameter of the photovoltaic power generation node, and a wireless communication module configured to wireless transmit the status parameter of the photovoltaic power generation node; and a microgrid local server configured to receive the status parameter of each of the photovoltaic power generation nodes, determine, based on the received status parameter of the photovoltaic power generation nodes, an operating status of each of the photovoltaic power generation nodes, and transmit the received status parameter and the determined operating status to the central server through the Internet. | 2018-09-27 |
20180278207 | METHOD OF OPERATING PHOTOVOLTAIC GENERATORS, CORRESPONDING CIRCUIT, DEVICE AND SYSTEM - A photovoltaic power generation plant includes a plurality of photovoltaic generators cooperative in producing photovoltaic power. Coupled with the photovoltaic generators in the plurality of photovoltaic generators are respective sensor devices, the sensor devices including sensor circuits of the individual current-to-voltage characteristics of the photovoltaic generators. The sensor circuits in the sensor devices can be activated to sense the individual current-to-voltage characteristics of the photovoltaic generators, with the individual current-to-voltage characteristic being indicative of the functionality of each photovoltaic generator. | 2018-09-27 |
20180278208 | SYSTEM AND METHOD FOR TESTING PHOTOSENSITIVE DEVICE DEGRADATION - The performance of photosensitive devices over time may be tested by configuring a photosensitive device test system that includes a light source plate that exposes photosensitive devices within a container to a specified light intensity. The light intensity may be adjusted by a programmable power source according to one or more thresholds. A test may last for a set duration with performance measurements being taken at predetermined intervals throughout the duration. Feedback from the photosensitive device test system may be recorded to determine whether to increase light intensity, to stop testing, to continue testing, and whether one or more environmental conditions should be altered. Measurements may be sent to a client for analysis and display to a user. | 2018-09-27 |
20180278209 | TEMPERATURE COMPENSATED OSCILLATOR AND ELECTRONIC DEVICE - A temperature compensated oscillator includes a resonator element, an oscillation circuit, and a temperature compensation circuit. Assuming an observation time as T, an MTIE value at 0.1 s<τ≤1 s is 1.3 ns or less, an MTIE value at 1 s<τ≤10 s is 1.3 ns or less, an MTIE value at 10 s<τ≤100 s is 1.8 ns or less, an MTIE value at 100 s<τ≤1000 s is 2.9 ns or less, a TDEV value at 0.1 s<τ≤10 s is 47 ps or less, a TDEV value at 10 s<τ≤100 s is 65 ps or less, and a TDEV value at 100 s<τ≤1000 s is 94 ps or less. | 2018-09-27 |
20180278210 | INTEGRATED CIRCUIT COMPRISING FRACTIONAL CLOCK MULTIPLICATION CIRCUITRY - Circuitry capable of performing fractional clock multiplication by using an injection-locked oscillator is described. Some embodiments described herein perform fractional clock multiplication by periodically changing the injection location, from a set of injection locations, where the injection signal is injected and/or by periodically changing a phase, from a set of phases, of the injection signal that is injected into the ILO. | 2018-09-27 |
20180278211 | Radio Receiver for Carrier Aggregation - A radio receiver circuit configurable to operate in a carrier-aggregation (CA) mode and in a non-CA mode is disclosed. It comprises a first receive path arranged to be operatively connected to an antenna and a second receive path arranged to be operatively connected to the same antenna. It further comprises a control unit operatively connected to the first receive path and the second receive path. In the CA mode, the control unit controls the first receive path to receive a first component carrier (CC) and the second receive path to receive a second CC. In the non-CA mode, the control unit selectively controls the first receive path and the second receive path to both receive the same single CC. | 2018-09-27 |
20180278212 | System having at least one frequency converter - A system includes a number of frequency converters, wherein a respective frequency converter has a wired data interface and a frequency converter parameter memory. The system further includes a number of wireless local area network modules, wherein a respective WLAN module has a wired data interface. The data interface of the WLAN module can be coupled to the data interface of a frequency converter for the purpose of bidirectional data exchange, wherein the frequency converter parameter memory of a frequency converter is designed to store values of a number of frequency converter WLAN parameters. | 2018-09-27 |
20180278213 | POWER ENVELOPE TRACKER AND ADJUSTABLE STRENGTH DC-DC CONVERTER - An apparatus is provided which comprises: a low-side switch; at least two high-side switches coupled to the low-side switch; a supply boost circuitry coupled to one of the at least two high-side switches; and a high-side switch selection circuit which is operable to enable one of the at least two high-side switches according to a relative difference between a signal and a threshold. | 2018-09-27 |
20180278214 | DOHERTY POWER AMPLIFIER FOR RADIO-FREQUENCY APPLICATIONS - A power amplifier can include a carrier amplifier having first and second differential amplification cells with outputs coupled by a primary loop of a carrier transformer, and a peaking amplifier having first and second differential amplification cells with outputs coupled by a primary loop of a peaking transformer. The power amplifier can further include a combiner having a quarter-wave circuit implemented between the secondary loop of the carrier transformer and a secondary loop of the peaking transformer. The quarter-wave circuit can be configured to provide a characteristic impedance, such that the carrier and peaking amplifiers are presented with an impedance that is approximately the same as the characteristic impedance when both of the carrier and peaking amplifiers are turned on, and the carrier amplifier is presented with an impedance that is approximately twice the characteristic impedance when the carrier amplifier is turned on and the peaking amplifier is turned off. | 2018-09-27 |
20180278215 | Multiplexed Multi-stage Low Noise Amplifier Uses Gallium Arsenide and CMOS Dice - A gate bias circuit for a plurality of GaAs amplifier stages is a transistor coupled to a temperature compensation current received from a CMOS control stage. A plurality of pHEMPT amplifier stages are coupled to the gate bias circuit and to a control voltage which switches the amplifier stage. A selectively controlled stage pass transistor enables a current mirror between the gate bias circuit and each stage amplifying transistor. The penultimate pHEMPT amplifier stage is coupled to a CMOS amplifier. A CMOS circuit provides both the temperature compensation current by a proportional to absolute temperature (PTAT) circuit and the control voltage enabling each pHEMPT transistor to receive its input signal in combination with the gate bias voltage. | 2018-09-27 |
20180278216 | ULTRA COMPACT MULTI-BAND TRANSMITTER WITH ROBUST AM-PM DISTORTION SELF-SUPPRESSION TECHNIQUES - A communication device includes a power amplifier that generates power signals according to one or more operating bands of communication data, with the amplitude being driven and generated in output stages of the power amplifier. The final stage can include an output passive network that suppresses suppress an amplitude modulation-to-phase modulation (AM-PM) distortion. During a back-off power mode a bias of a capacitive unit of the output power network component can be adjusted to minimize an overall capacitance variation. A output passive network can further generate a flat-phase response between dual resonances of operation. | 2018-09-27 |
20180278217 | AMPLIFIER, AUDIO SIGNAL OUTPUT METHOD, AND ELECTRONIC DEVICE - The present technology relates to an amplifier, an audio signal output method, and an electronic device that can inhibit unintended sound output in a class D amplifier that changes a peak value of a PWM signal. The amplifier includes: a positive-side amplitude generating circuit configured to generate positive-side amplitude of an output PWM signal that is a PWM signal to be output outside an apparatus; a negative-side amplitude generating circuit configured to generate negative-side amplitude of the output PWM signal; and a feedback circuit configured to feed back a difference between the amplitude generated by the positive-side amplitude generating circuit and the amplitude generated by the negative-side amplitude generating circuit to the positive-side amplitude generating circuit and the negative-side amplitude generating circuit. The present technology is applicable, for example, to an amplifier or the like of an electronic device such as an audio player. | 2018-09-27 |
20180278218 | PEAKING AMPLIFIER FREQUENCY TUNING - A circuit including: input and output nodes and first and second feedback nodes; a first input amplifier having an input connected to the input node and an output connected to the first feedback node; a second input amplifier having an input connected to the input node and an output connected to the second feedback node; a capacitor connecting the first feedback node and the second feedback node; an amplifier having an input connected to the first feedback node and an output connected to the output node; a base feedback amplifier with an input connected to the output node and an output connected to the first feedback node; a tunable feedback amplifier with an input connected to the output node and an output connected to the second feedback node; and a tuning circuit for varying a transconductance of the tunable feedback circuit and operational frequency of the peaking amplifier circuit. | 2018-09-27 |
20180278219 | POWER AMPLIFICATION DIVISION CIRCUIT AND MULTI-STAGE TYPE POWER AMPLIFICATION DIVISION CIRCUIT - A power amplification division circuit includes a conversion element having a one-turn annular first inductor and an N-turn annular second inductor in a shape along a portion of the first inductor and converting an input signal into positive and negative phase signals, a first transistor in which a source is connected with a third power source and a gate receives the positive signal, a second transistor in which a source is connected with a fourth power source and a gate receives the negative phase signal, a first impedance circuit connected between the gate of the first transistor and a drain of the second transistor, a second impedance circuit connected between the gate of the second transistor and a drain of the first transistor, and an output matching circuit connected with the drains of the first and second transistors and outputting first and second divided signals. | 2018-09-27 |
20180278220 | AMPLIFIER - An amplifier of an embodiment includes: a plurality of input transistors of a plurality of differential pairs; a plurality of first resistance circuits mutually connecting respective sources of the input transistors corresponding to the differential pairs and mutually connecting the respective sources and reference potential points; a plurality of second resistance circuits being connected between the respective sources of the plurality of input transistors and the reference potential points, respectively; and a control circuit configured to generate a control signal controlling whether or not to electrically connect the plurality of first resistance circuits and the plurality of second resistance circuits to the respective sources of the input transistors. | 2018-09-27 |