32nd week of 2022 patent applcation highlights part 69 |
Patent application number | Title | Published |
20220255404 | MOTOR COOLING SYSTEM, MOTOR STATOR AND DISC MOTOR - A motor cooling system, a motor stator and a disc motor. The motor cooling system comprises an insulated cooling pipeline ( | 2022-08-11 |
20220255405 | DC MOTOR - An object of the present invention is to provide a structure capable of stably removing noise. A DC motor includes: a brush in sliding contact with a commutator; a brush holder base holding the brush; a flexible wiring connected to the brush; and a choke coil connected to the brush via the wiring, wherein the brush holder base has a clamping portion restraining the wiring to extend along a direction parallel to a direction of a magnetic flux generated in the choke coil. | 2022-08-11 |
20220255406 | MOTOR AND MOTOR DRIVE ARRANGEMENT - An integrated motor and motor drive arrangement includes a motor having a stator, and a rotor, rotatable relative to the stator to drive a load, the rotor being arranged radially outside the stator, and the stator having an inner surface defining a radially inner space, the motor arrangement further comprising: motor drive components mounted to the inner surface of the stator within the radially inner space. | 2022-08-11 |
20220255407 | Motor, Power Assembly, and Motor Drive Device - This application provides a motor, a power assembly, and a motor drive device. In this application, the motor includes a grounding ring and a first sealing piece, or includes a grounding ring, a first sealing piece, and a second sealing piece. The grounding ring is electrically connected to a rotating shaft and a housing. Because the grounding ring is made of a material with good conduction performance, a shaft induced voltage transmitted on the rotating shaft can be transmitted to the housing through the grounding ring, instead of being transmitted to the housing through a motor bearing, thereby avoiding bearing electric corrosion of the motor bearing. | 2022-08-11 |
20220255408 | ROTOR FOR A ROTATING ELECTRIC MACHINE - A rotor for a rotating electric machine includes a rotor winding arranged for conjoint rotation on a rotor shaft, and a slip ring body arranged on an axial end of the rotor shaft and having an end face on an axial end of the slip ring body opposite to the rotor winding. The slip ring body includes connection adapters which project axially beyond the end face of the slip ring body for connection of line ends of the rotor winding. A driver unit for a rotary encoder is fastened to the end face of the slip ring body and/or to the axial end of the rotor shaft and electrically insulated from the connection adapters. A centrifugal force support ring is arranged on the end face of the slip ring body such that the connection adapters and the driver unit are arranged in a through-opening of the centrifugal force support ring. | 2022-08-11 |
20220255409 | NOISE REDUCTION METHOD BY CUTTING A CORNER OF A TOOTH SHOULDER OF A STATOR OF AN AC TRACTION MOTOR BASED ON INSCRIBED ARC - Provided is a noise reduction method by cutting a corner of a tooth shoulder of a stator of an AC traction motor based on an inscribed arc. Taking a vertex of a corner of the tooth shoulder of the stator as an end point, two points are selected along two sides of the corner of the tooth shoulder of the stator to allow distances from the two points to the end point to be equal. The two points are determined as tangent points D | 2022-08-11 |
20220255410 | ELECTRIC TOOL - A motor includes a stator and a rotor. The stator has a coil unit and an iron core. The coil unit includes a plurality of coils and an insulator. The iron core includes a plurality of teeth. The rotor has a permanent magnet. The rotor is provided on an inner side of the stator to be rotatable around a shaft as a center with a gap being provided between the stator and the rotor. The rotor includes a plurality of segments divided in a rotation axis direction, the plurality of segments being rotatable relatively to each other such that a magnetic flux output from the rotor changes. | 2022-08-11 |
20220255411 | ROTARY ELECTRIC MACHINE SYSTEM - A rotary electric machine system includes a rotary electric machine, a housing for housing the rotary electric machine, and a rotation parameter detector for detecting the rotation parameter of a rotating shaft constituting the rotary electric machine. The rotating shaft includes a first end portion and a second end portion, and a first bearing and a second bearing are provided between the housing and the first end portion, and between the housing and the second end portion, respectively. The first end portion includes a protruding tip that protrudes out of the housing through the first bearing. The rotation parameter detector is provided at the protruding tip. | 2022-08-11 |
20220255412 | LINEAR VIBRATION MOTOR AND ELECTRONIC DEVICE - A linear vibration motor and an electronic device are provided. The linear vibration motor comprises: a magnetic conductive body; a vibrator comprising a permanent magnet; and a linear movement support, wherein the vibrator is mounted on the linear movement support to move along a linear movement path delimited by the linear movement support, wherein the magnetic conductive body is provided in a direction of the linear movement path near the vibrator for interacting with the permanent magnet, such that the vibrator tends towards a balanced position in the linear movement path in a non-activated state, wherein the magnetic conductive body is made of soft magnetic material, wherein the linear movement support comprises at least one guide shaft along which the vibrator can move axially, and wherein the magnetic conductive body is a magnetic conductive ring surrounding the vibrator. | 2022-08-11 |
20220255413 | LOW NOISE GEAR MOTOR WITH DISSYMETRIC ELECTRIC MOTOR - A gear motor comprising a reduction gear train and a three-phase electric motor comprising a stator formed of a stack of sheets and 3*k electric coils and a rotor having 5 k*N pairs of magnetized poles, with k=1 or 2, the stator having two separate angular sectors alpha 1 and alpha 2, which are centered on the center of rotation of the motor and comprise an alternation of notches and 3*k*N teeth, which are regularly spaced and converge toward the center of rotation and define a cavity in which the rotor is arranged, the gear motor being characterized in that N=4 and in that alpha 1 is less than or equal to 180° and comprises all of the coils of the motor. | 2022-08-11 |
20220255414 | LENS DRIVING DEVICE, CAMERA MODULE, AND OPTICAL APPARATUS - The present embodiment relates to a lens driving device which includes: a substrate; a housing; a bobbin; a sensing coil; a first magnet; a second magnet; a third magnet; a dummy member; a first coil that includes a first coil unit and a second coil unit; and a first position sensor that is disposed on the substrate and corresponds to the sensing coil, wherein the first magnet and the second magnet are positioned on opposite sides from each other, the third magnet and the dummy member are positioned on opposite sides from each other, the sensing coil is provided with a driving signal, and the first position sensor senses the strength of the magnetic field of the sensing coil and outputs an output signal. | 2022-08-11 |
20220255415 | CONTROL CIRCUIT FOR POWER CONVERTER APPARATUS PROVIDED WITH PFC CIRCUIT OPERATING IN CURRENT-CRITICAL MODE - In a power converter apparatus including a PFC circuit operating in a current-critical mode, a zero point of an inductor current is accurately detected. The control circuit includes a current detector unit including a first detection circuit that detects an inductor current, amplifies a voltage corresponding to the detected current with a gain, and outputs it as a detection voltage and a comparison circuit that compares the detected voltage with a predetermined reference voltage and outputs a comparison result signal. The control circuit calculates the reference voltage for making a delay when detecting the zero value of the inductor current substantially zero, based on the detected input voltage, the detected output voltage, the preset delay time, the inductance value of the inductor, the conversion factor in current/voltage converting, the power supply voltage, and the gain, and then, outputs it to the comparison circuit. | 2022-08-11 |
20220255416 | SOFT-SWITCHING POWER CONVERTER - A soft-switching power converter includes a main switch, an energy-releasing switch, and an inductive coupled unit. The main switch is a controllable switch. The energy-releasing switch is coupled to the main switch. The inductive coupled unit is coupled to the main switch and the energy-releasing switch. The inductive coupled unit includes a first inductance, a second inductance coupled to the first inductance, and an auxiliary switch unit. The auxiliary switch unit is coupled to the second inductance to form a closed loop. The main switch and the energy-releasing switch are alternately turned on and turned off. The auxiliary switch unit is controlled to start turning on before the main switch is turned on so as to provide at least one current path. | 2022-08-11 |
20220255417 | Multilevel Power Conversion System and Method - A system includes a first power conversion device connected to a first power source, a first isolated power conversion device connected to the first power source, and a second power conversion device connected to the first isolated power conversion device, wherein outputs of the first power conversion device and outputs of the second power conversion device are connected in series, and series-connected outputs of the first power conversion device and the second power conversion device are configured to drive a motor. | 2022-08-11 |
20220255418 | MULTI-PULSE TRANSFORMER FOR USE WITH AN INDUSTRIAL MACHINE - A multi-pulse transformer for an industrial machine, the multi-pulse transformer including a primary winding configured to receive a first voltage from a power source via a transformer, and a plurality of secondary windings configured to output a second voltage to a converter, the second voltage less than the first voltage. Wherein the multi-pulse transformer attenuates harmonic distortions by phase shifting each one of the plurality of secondary windings with respect to the primary winding. Wherein the multi-pulse transformer provides bi-directional flow of power. | 2022-08-11 |
20220255419 | POWER CONVERSION DEVICE - An object is to obtain a power conversion device that can stabilize output voltage to a DC load. A power conversion device includes an AC/DC conversion unit having a power conversion circuit composed of a plurality of first semiconductor switching elements connected in a fill-bridge form, and a full-bridge chopper circuit unit having a full-bridge chopper circuit composed of a plurality of second semiconductor switching elements connected in a full-bridge form, and connected to a positive terminal and a negative terminal. A neutral point of an AC filter capacitor unit and a neutral point of a DC filter capacitor unit are connected via a neutral point line. | 2022-08-11 |
20220255420 | CONTROL METHOD AND SYSTEM FOR THREE-PHASE GRID-CONNECTED INVERTER, AND THREE-PHASE GRID-CONNECTED INVERTER - A three-phase grid-connected inverter, a control system thereof and a control method therefor. The inverter is a three-phase three-leg grid-connected inverter, and a filter capacitor is connected to a negative electrode of a DC input bus to form a filter loop, so as to filter harmonic wave in the circuit, realizing high-quality grid-connected current at small power, without increasing an inductance value, so that the parallel inverter device in the system operates stably and thus is applicable to photovoltaic microinverters. Moreover, the three-phase three-leg grid-connected inverter operates in a discontinuous conduction mode, that is, in a switching cycle, the inductive current is reduced to 0, so that the switching loss of the three-phase three-leg grid-connected inverter is reduced. | 2022-08-11 |
20220255421 | LOW QUIESCENT CURRENT STARTUP CIRCUIT - A switch mode power supply includes a bootstrap circuit, control circuits, and an auxiliary winding coupled to the bootstrap circuit and configured to supply power to the control circuits after startup of the power supply. The bootstrap circuit is configured to supply power to the control circuits during startup and includes an isolation circuit to limit current flow between the starting capacitor and the control circuits while the starting capacitor is charged to a starting voltage by the high voltage input. During the initial charge of the starting capacitor, the control circuits do not have power to provide the initial functionality of the power supply. Once the starting capacitor is charged to the starting voltage, the isolation circuit is activated to allow current flow that powers the control circuits during the remainder of the startup until the auxiliary winding is able to power the control circuits. | 2022-08-11 |
20220255422 | PFC CIRCUIT AND CONTROL METHOD THEREOF - A PFC circuit includes: a boost inductor, an auxiliary winding, an auxiliary switch tube, a main switch tube, a clamping capacitor, a series resistor and a control module; the boost inductor and the auxiliary winding have mutual inductance, a first terminal of the auxiliary winding is connected to a first terminal of the auxiliary switch tube, a second terminal of the auxiliary switch tube is connected to a first terminal of the clamping capacitor, a second terminal of the clamping capacitor is connected to a first terminal of the series resistor, and a second terminal of the series resistor is connected to a second terminal of the auxiliary winding; the main switch tube is connected between the boost inductor and the ground; and the control module is respectively connected to a control terminal of the main switch tube and a control terminal of the auxiliary switch tube. | 2022-08-11 |
20220255423 | CHARGE PUMP ARCHITECTURE - Disclosed herein is a charge pump architecture in which boosting capacitors of adjacent stages are connected only by NMOS type transistors and comprising a first stage receiving a first voltage and outputting an internal voltage; a second stage receiving the internal voltage and outputting a second voltage at an output terminal, and an auxiliary stage connected to the output terminal, the first stage and second stage including a first type of MOS transistors transferring the voltage from input node internal boosting nodes and being cross-coupled; a second type of MOS transistors with their gate biased by a third type of MOS transistors and fourth type of MOS transistors; the third type of MOS transistors connecting the gate of the second type of MOS transistors; and the fourth type of MOS transistors connecting the gate of the second type of MOS transistors | 2022-08-11 |
20220255424 | HALF-BRIDGE POWER CIRCUIT, CONTROLLER THEREFOR, AND METHOD FOR CONTROLLING THE SAME - A controller for a half-bridge power circuit includes a measurement circuit, a controller circuit, a high-side delay circuit, and a low-side delay circuit. The measurement circuit connects to the half-bridge node, measures the half-bridge voltage, and generates a multi-bit status signal indicative of the measured half-bridge voltage. The controller circuit connects to the measurement circuit, and receives the status signal therefrom. The controller circuit generates at least a delay control signal based on the status signal. The high-side delay circuit connects to the controller circuit to receive the delay control signal. The high-side delay circuit provides a high-side control signal in response to the delay control signal, to switch on/off the high-side switch. The low-side delay circuit connects to the controller circuit to receive the delay control signal. The low-side delay circuit provides a low-side control signal in response to the delay control signal, to switch on/off the low-side switch. | 2022-08-11 |
20220255425 | High Bandwidth Constant On-Time PWM Control - Apparatus and associated methods relate to dynamic bandwidth control of a variable frequency modulation circuit by selective contribution of a crossover frequency tuning engine (XFTE) in response to a transient in a switching frequency. In an illustrative example, the XFTE may generate a transient control signal (C | 2022-08-11 |
20220255426 | DUAL MODE SUPPLY CIRCUIT AND METHOD - A circuit includes a first passive device between supply and bias nodes, a first switching device and a second passive device between the bias and a reference node, a transistor between the supply and an output node, a third passive device and a second switching device between the output and a feedback node, a fourth passive device between the feedback and reference nodes, a third switching device between the supply and output nodes, and an amplifier controlling the transistor based on bias node and feedback node voltages. In a first mode, the first and second switching devices are off, the third switching device is on, and the supply node receives a first voltage level. In a second mode, the first and second switching devices are on, the third switching device is off, and a second voltage level greater than the first voltage level is received on the supply node. | 2022-08-11 |
20220255427 | DIRECT-CURRENT (DC) VOLTAGE CONVERSION DEVICE - A direct-current (DC) voltage conversion device includes an energy providing circuit, a first transistor switch, a second transistor switch, a third transistor switch, a fourth transistor switch, and an output capacitor. The first transistor switch is turned on. The second transistor switch and the fourth transistor switch are turned off. The energy providing circuit charges the parasitic capacitance of the second transistor switch. When the third transistor switch is turned on, the parasitic capacitance discharges the output capacitor to establish the same voltage drops across the parasitic capacitance and the output capacitor. After establishing the same voltage drops across the parasitic capacitance and the output capacitor, the parasitic capacitance of the second transistor switch charges the parasitic capacitance of the fourth transistor switch, thereby establishing a zero voltage drop across the fourth transistor switch and achieving zero voltage switching. | 2022-08-11 |
20220255428 | REGULATOR CIRCUIT, CORRESPONDING SYSTEM AND METHOD - A circuit includes an electronic switch configured to be coupled intermediate a high-voltage node and low-voltage circuitry and configured to couple the low-voltage circuitry to the high-voltage node. A voltage-sensing node is configured to be coupled to the high-voltage node via a pull-up resistor. A further electronic switch can be switched to a conductive state to couple the voltage-sensing node and the control node of the electronic switch. A comparator compares a threshold with a voltage at the voltage-sensing node and causes the further electronic switch to switch on in response to the voltage at said voltage-sensing node reaching said threshold. A charge pump coupled to the current flow-path of the electronic switch is activated to the conductive state to pump electric charge from the current flow-path of the electronic switch to the control node of the electronic switch via the further electronic switch switched to the conductive state. | 2022-08-11 |
20220255429 | VOLTAGE CONVERTER - A voltage converter can include: an input end configured to receive an input voltage; an output end configured to generate an output voltage; N switched capacitor circuits sequentially coupled in series between the input end and the output end, where N is a positive integer greater than or equal to 2; where each switched capacitor circuit comprises a switch circuit and a flying capacitor, and at least the flying capacitor of an i-th switched capacitor circuit is configured as an output capacitor of an (i− | 2022-08-11 |
20220255430 | CONVERTER FOR TRANSFERRING ELECTRIC POWER TO AN ELECTRICAL LOAD - A converter ( | 2022-08-11 |
20220255431 | DC-DC CONVERTER CIRCUIT - A direct-current to direct-current (DC-DC) converter circuit is provided. The DC-DC converter circuit is capable of generating a DC output voltage in a defined voltage range based on an input voltage. The DC-DC converter circuit can include a modulator circuit, an output filter circuit, and a compensator circuit. In a non-limiting example, the output filter circuit includes an inductor-capacitor (LC) circuit formed by an inductor and a multi-layer ceramic capacitor (MLCC). Notably, the MLCC can produce a variable capacitance in the defined voltage range due to inherent DC bias instability, thus risking stability of the DC-DC converter circuit. As such, a control circuit is configured to determine a configurable transconductance based on feedback of the output voltage and control the compensator circuit to operate accordingly. As such, it may be possible to mitigate the effect of MLCC capacitance variation, thus helping to maintain stability of the DC-DC converter circuit. | 2022-08-11 |
20220255432 | SYSTEMS AND METHODS FOR AUTOMATIC DETERMINATION OF STATE OF SWITCHES IN POWER CONVERTERS - Systems and methods that automatically detect state of switches in power converters are disclosed. In one aspect, a power switch includes a first switch coupled between a power input node and a first terminal of a load, a second switch coupled between the power input node and a second terminal of the load, first and second current sense devices arranged to transmit first and second signals including at least one of a magnitude and polarity of first and second currents through the first and second switches, respectively, a first driver circuit arranged to transmit first control signals to the first switch based at least in part on a voltage at the power input node and the first signal, and a second driver circuit arranged to transmit second control signals to the second switch based at least in part on the voltage at the power input node and the second signal. | 2022-08-11 |
20220255433 | CHARGING CIRCUIT AND CHARGING SYSTEM - A charging circuit can include: a first port for receiving a first input source; a second port coupled to a second input source or an external device; and a power stage circuit configured to operate as a charge pump in a first state, and to operate as a hybrid switching converter in a second state, where the hybrid switching converter and the charge pump share at least part of a plurality of power switches. | 2022-08-11 |
20220255434 | POWER MANAGEMENT SYSTEMS AND METHODS RELATED TO A PLURALITY OF CONVERTERS FOR PROVIDING DUAL INTEGRATED MULTI-MODE POWER MANAGEMENT - A method for converting voltage is disclosed, including implementing a first DC-DC converter in a power management unit; implementing a second DC-DC converter in the power management unit; implementing a controller communicatively coupled to a first output line of the first DC-DC converter and communicatively coupled to a second output line of the second DC-DC converter; coupling the power management unit to a supply voltage; and providing one or more output voltages on the first output line and the second output line. | 2022-08-11 |
20220255435 | BIDIRECTIONAL SWITCHING CONVERTER AND OPERATING METHOD THEREOF - The inventive concepts provide a bidirectional switching converter including a first power metal oxide semiconductor field effect transistor (MOSFET) connecting an input voltage node to a switching node, a second power MOSFET connecting the switching node to a ground node, and a zero current detection (ZCD) auto-calibration circuit configured to perform one of an operation of generating a first offset for varying a turn-on time of the first power MOSFET according to an operation mode and an operation of generating a second offset for varying a turn-on time of the second power MOSFET according to the operation mode. | 2022-08-11 |
20220255436 | DIGITAL CURRENT MODE CONTROL FOR MULTI-PHASE VOLTAGE REGULATOR CIRCUITS - A voltage regulator circuit included in a computer system may include multiple phase circuits each coupled to a regulated power supply node via a corresponding inductor. The phase circuits may modify a voltage level of the regulated power supply node using respective control signals generated by a digital control circuit that processes multiple data bits. An analog-to-digital converter circuit may compare the voltage level of the regulated power supply node to multiple reference voltage levels and sample the resultant comparisons to generate the multiple data bits. | 2022-08-11 |
20220255437 | POWER SUPPLY CONTROL DEVICE AND FLYBACK CONVERTER - The present disclosure provides a power supply control device and a flyback converter. The power supply control device includes: a comparator, comparing a current sensing signal generated by IN conversion of a primary side current flowing in the primary winding with a threshold voltage; a switching controller, turning off a switching element according to a comparing result of the current sensing signal and the threshold voltage by the comparator; an external terminal, connectable to a connection node of an external resistor connected in series between one end of the auxiliary winding and an application end of a ground potential; a current detector, detecting a terminal current flowing through the external terminal; and a threshold voltage corrector, correcting the threshold voltage based on a current detection signal of the current detector. | 2022-08-11 |
20220255438 | CONTROLLER OF SWITCHING POWER SUPPLY AND CONTROL METHOD THEREOF - A switching power supply controller and a control method thereof are disclosed in the invention. By adjusting a switching frequency of the switching power supply based on a radio of a switching period of the power transistor to the sum of the conduction time of the power transistor and the demagnetization time of an inductor, the switching frequency of the switching power supply varies within a preset range under different load conditions. The switching power supply controller of the present invention prevents the effect of the frequency jittering control from being weakened due to the decrease of the switching frequency under heavy load, thereby improving the conducted electromagnetic interference. | 2022-08-11 |
20220255439 | CONTROLLER OF SWITCHING POWER SUPPLY AND CONTROL METHOD THEREOF - A controller of a switching power supply can include: a frequency-jittering control circuit configured to generate a first frequency-jittering signal and a second frequency-jittering signal; where a jittering range of an operating frequency of a power transistor in the switching power supply is adjusted by the first frequency-jittering signal; and where a jittering amplitude of a peak value of an inductor current of the switching power supply is adjusted by the second frequency-jittering signal. | 2022-08-11 |
20220255440 | AC VOLTAGE REGULATING CIRCUIT AND METHOD AND TRANSFORMER - An AC voltage regulating circuit, method and transformer are disclosed in the present application. The AC voltage regulating circuit includes an AC/DC converter, a switch converter, and a switch controller. The AC/DC converter includes an AC power supply input end and a DC conversion output end. The switch converter includes a switch AC input end, a switch DC input end, a regulated voltage output end, an AC controllable switch assembly, a positive voltage DC controllable switch assembly and a negative voltage DC controllable switch assembly. The switch controller includes a power sampling end, a reference sampling end, an AC control end, a DC positive voltage control end and a DC negative voltage control end. | 2022-08-11 |
20220255441 | NON-ISOLATED HYBRID RESONANCE CIRCUIT - The disclosure provides a non-isolated hybrid resonance circuit for powering a load by converted voltage, including: a full-wave rectifier circuit connected in parallel to the load, and having a first and second rectifying branch connected in parallel, each rectifying branch having a rectifying switch and a winding connected in series; a first switching circuit connected between the first end of the power supply and the first end of the load, and including a first and second switch connected in series; and a first resonant unit electrically coupled between the first connection node formed by the first and second switch connected in series and the midpoint of the first rectifying branch, wherein the windings of the first and second rectifying branches are coupled to each other. The conversion circuit provided by the disclosure can realize an odd voltage conversion ratio, and can reduce loss and volume of the transformer. | 2022-08-11 |
20220255442 | REDUCED POWER CONSUMPTION FOR LLC RESONANT CONVERTER UNDER LIGHT LOAD - This disclosure provides a resonant LLC power converter unit to provide a plurality of power outputs. The power converter unit includes multiple transformers arranged such that at least one primary winding of each transformer is connected in parallel and configured to provide a power output to a secondary that powers one of the plurality of outputs. One of these transformers, or a parallel choke across an output bus, can be used to provide lower power to the output bus during a standby state (i.e., during a light- or no-load condition). The power converter unit includes a first switching section for providing a first power input during normal operation and a second switching section for providing a second power input during no- or light-load conditions. | 2022-08-11 |
20220255443 | POWER CONVERSION APPARATUS - According to an embodiment, a power conversion apparatus includes a transformer, an inverter, a rectifier, a first voltage detector, a second voltage detector, and a control unit. The inverter includes a switch and outputs AC voltage to the primary side of the transformer by an ON/OFF operation of the switch. The rectifier converts the AC voltage from the secondary side of the transformer into DC output voltage. The first voltage detector detects input voltage input to the inverter. The second voltage detector detects the output voltage. The control unit sets, on the basis of the input voltage and the output voltage, permissible ON time for which the switch is set to an ON state such that a value of current output from the inverter does not exceed an upper limit value. | 2022-08-11 |
20220255444 | CONTROLLER AND CONTROL SYSTEM FOR DC/DC CONVERTER - This application provides a controller and control system for a DC/DC converter. The DC/DC converter includes a first switching transistor, a second switching transistor, a first capacitor, and a transformer. The transformer includes an excitation inductor and a transformer leakage inductor. The controller controls the first switching transistor to turn on to form a first closed circuit, where a current in the excitation inductor increases in a first direction; when a preset time period expires, the controller controls the first switching transistor to turn off, so that a voltage at two ends of the second switching transistor decreases; and when the voltage at the two ends of the second switching transistor is a first preset voltage threshold, the controller controls the second switching transistor to turn on to form a second closed circuit. When embodiments of this application are implemented, a turn-on loss in the DC/DC converter can be reduced. | 2022-08-11 |
20220255445 | POWER CONVERSION APPARATUS - A power conversion apparatus includes an input side terminal, an output side terminal and a switch unit, switching the switch unit between ON and OFF during a power transmission. The switch unit has characteristics that, in the case where a reverse current flows through the switch unit, the larger a gate voltage thereof in a negative side, the larger a conduction loss occurring when the reverse current flows. The power conversion apparatus is provided with a control unit that increases, when determined that the increase request for increasing the heating value is present, the gate voltage of the switch unit to the negative side when turned OFF compared to a case where no increase request for increasing the heating value is present, the reverse current flowing through the switch unit during the power transmission. | 2022-08-11 |
20220255446 | HIGH EFFICIENCY AND HIGH DENSITY GaN-BASED POWER CONVERTER - The present invention provides a high efficiency, high density GaN-based power converter comprising: a transformer; a magnetic coupler; a primary switch; a secondary switch; a primary controller; a secondary controller; a multi-layered print circuit board (PCB) comprising: one or more planar coils respectively formed on one or more PCB layers and aligned with each other for constructing the transformer and the coupler; and a plurality of conducting traces and vias for providing electrical connection among the transformer, the coupler, a primary switch, a secondary switch, a primary controller and a secondary controller. The power converter further comprises a pair of ferrite cores being fixed to a top surface and a bottom surface of the PCB respectively and commonly shared by the transformer and the coupler. | 2022-08-11 |
20220255447 | HIGH EFFICIENCY AND HIGH DENSITY GaN-BASED POWER CONVERTER - The present invention provides a high efficiency, high density GaN-based power converter comprising: a transformer; a magnetic coupler; a primary switch; a secondary switch; a primary controller; a secondary controller; a multi-layered print circuit board (PCB) comprising: one or more planar coils respectively formed on one or more PCB layers and aligned with each other for constructing the transformer and the coupler; and a plurality of conducting traces and vias for providing electrical connection among the transformer, the coupler, a primary switch, a secondary switch, a primary controller and a secondary controller. The power converter further comprises a pair of ferrite cores being fixed to a top surface and a bottom surface of the PCB respectively and commonly shared by the transformer and the coupler. | 2022-08-11 |
20220255448 | METHOD AND SYSTEM OF A POWER CONVERTER WITH SECONDARY SIDE ACTIVE CLAMP - A power converter with secondary side active clamp. At least one example is a method including: limiting a push-phase voltage excursion of a phase node on a secondary side of a power converter during a push phase of a primary side of the power converter, the limiting by extracting current from the phase node and storing the current on a clamp capacitor; limiting a pull-phase voltage excursion of the phase node on the secondary side of the power converter during a pull phase of the primary side of the power converter, the limiting by extracting current from the phase node and storing the current on a clamp capacitor; and utilizing the current stored on the clamp capacitor to drive a component on the secondary side. | 2022-08-11 |
20220255449 | POWER CONVERSION CIRCUIT AND POWER CONVERSION APPARATUS WITH SAME - A power conversion circuit includes a first terminal, a second terminal, a first switching conversion unit, a second switching conversion unit, a flying capacitor and a magnetic element. The first switching conversion unit includes a first switch and a third switch. The second switching conversion unit includes a second switch and a fourth switch. The magnetic element includes two first windings and a second winding. A first one of the two first windings is serially connected between the flying capacitor and the second terminal. A second one of the two first windings is serially connected between the second switch and the second terminal. The second winding is serially connected with the flying capacitor and the first one of the two first windings. A turn ratio between the second winding, the first one of the two first windings and the second one of the two first windings is N:1:1. | 2022-08-11 |
20220255450 | APPARATUS AND METHOD FOR SYNCHRONOUS RECTIFIER CONTROL DELAY - A circuit for use in an LLC converter comprises a first primary side switch, a first secondary side switch assembly, and a controller. The controller is configured to measure, on the primary side of the LLC converter, a first voltage and determine, based on the first voltage, a delay due to the first voltage. The controller is also configured to apply a first gate voltage to the first primary side switch to transition the first primary side switch from an off state to an on state and apply a second gate voltage to the first secondary side switch assembly to transition the first secondary side switch assembly from an off state to an on state. The application of the first gate voltage and the application of the second gate voltage are separated by a synchronous rectifier delay based at least on the delay due to the first voltage. | 2022-08-11 |
20220255451 | APPARATUS AND METHOD FOR SYNCHRONOUS RECTIFIER CONTROL DELAY - A circuit for use in an LLC converter comprises a first primary side switch, a first secondary side switch assembly, a controller, and a resonant network. The controller is configured to measure, on the LLC primary side, a first voltage and determine a delay due to the first voltage. The controller is also configured to apply a first gate voltage to the first primary side switch to transition the first primary side switch from an off state to an on state and apply a second gate voltage to the first secondary side switch assembly to transition the first secondary side switch assembly from an off state to an on state. The application of the first and second gate voltages are separated by a synchronous rectifier delay based on the delay due to the first voltage, the first voltage comprising a voltage across the resonant capacitor. | 2022-08-11 |
20220255452 | DUAL SOURCED COMMON 3-LEVEL VSCF - A system comprises a first 3-phase rectifier having a positive DC lead and a negative DC lead and a second 3-phase rectifier having a positive DC lead and a negative DC lead. The system also includes a 4-phase, 3-level inverter connected to the first and second 3-phase rectifiers. A method comprises receiving variable frequency, 3-phase power from a first generator, receiving variable frequency, 3-phase power from a second generator, rectifying the variable frequency, 3-phase power from each of the first and second generators into DC power. And inverting the DC power into 4-phase, constant frequency power for powering a load. | 2022-08-11 |
20220255453 | SWITCHING POWER SUPPLY DEVICE - In a switching power supply device, a control circuit controls a first thyristor, a second thyristor, and a switching element according to an input voltage. The control circuit maintains the first thyristor in an on state while maintaining the second thyristor and the switching element in an off state in a first period in which the absolute amplitude value is equal to or less than a first threshold value within the latter half of a first half-cycle of the input voltage at startup, and maintains the second thyristor in an on state while maintaining the first thyristor and the switching element in an off state in a second period in which the absolute amplitude value is equal to or less than a second threshold value within the latter half of a second half-cycle of the input voltage at startup. The second half-cycle is the half-cycle following the first half-cycle. | 2022-08-11 |
20220255454 | DEVICE FOR SUPPLYING POWER FROM AN AC VOLTAGE - The present description concerns a device for delivering a voltage from an AC voltage, comprising a capacitive element ( | 2022-08-11 |
20220255455 | CONVERTER AND POWER ADAPTER - This application discloses a converter and a power adapter, to reduce an energy loss of the power adapter. The converter includes: a DC power supply, a primary power transistor, an auxiliary power transistor, a first capacitor, a transformer, and a control circuit. The first capacitor is connected in series to the transformer to form a series circuit, the series circuit is connected in parallel to a first terminal and a second terminal of the auxiliary power transistor. The control circuit is configured to: when an excitation current in the transformer is in a continuous state, regulate a target voltage to a preset voltage threshold, and control the primary power transistor to be turned on when first dead time ends, where the target voltage is a voltage between the first terminal of the primary power transistor and the ground. | 2022-08-11 |
20220255456 | POWER CONVERSION MODULE - A power conversion module includes an input port, an output port, a full-bridge switching circuit, a magnetic device, an energy storage capacitor set and a rectifier circuit. The magnetic device includes a first coupled winding pair and a second coupled winding pair. The first coupled winding pair includes a first winding and a second winding, which are coupled to each other. The second coupled winding pair includes a third winding and a fourth winding, which are coupled to each other. The first winding and the third winding are connected between a first bridge arm and a second bridge arm of the full-bridge switching circuit. The energy storage capacitor set is electrically connected with the input port, and electrically connected with the first winding and the third winding. The rectifier circuit is electrically connected with the second winding, the fourth winding and the output port. | 2022-08-11 |
20220255457 | POWER CONVERTER - A power converter includes an inverter circuit connected between the positive and negative terminals of a DC power supply, three single-phase bridge circuits each connected in series between an AC terminal of one of different phases of the inverter circuit and a motor, and a power conversion controller that generates gate signals to control operations of the inverter circuit and the three single-phase bridge circuits based on phase voltage commands. When a semiconductor switching element of the single-phase bridge circuits fails, the power conversion controller sets the output voltage of the single-phase bridge circuit of a phase to which the faulty semiconductor switching element belongs to zero to continue operation. | 2022-08-11 |
20220255458 | MULTI-LEVEL INVERTER CLAMPING MODULATION METHOD AND APPARATUS, AND INVERTER - Embodiments of the present application disclose a multi-level inverter clamping modulation method and apparatus, and an inverter. Switching elements of an inverter are controlled when an output voltage of the inverter crosses zero, and switching elements in each inverter bridge arm of an active clamp multi-level inverter include an internal tube, an external tube, and a clamping tube. The internal tube and the external tube are connected in series between a positive bus and a negative bus, the clamping tube is connected between a common terminal of the internal tube and the external tube and a bus, the internal tube is a low-frequency switching element, and the external tube and the clamping tube are high-frequency switching elements. | 2022-08-11 |
20220255459 | CONTROL METHOD AND SYSTEM FOR THREE-PHASE GRID-CONNECTED INVERTER, AND THREE-PHASE GRID-CONNECTED INVERTER - A three-phase grid-connected inverter, and a method and a device for controlling the three-phase grid-connected inverter are provided. The method is applied to a three-phase three-leg grid-connected inverter. A structure of the three-phase three-leg grid-connected inverter is improved, so that a filter capacitor (C | 2022-08-11 |
20220255460 | INVERTER PHASE SWITCH WITH HIGH SIDE VS LOW SIDE MOSFET RESISTANCE DIVERSITY - One or more embodiments are provided for an inverter. The inverter includes a phase switch configured to supply AC power via an output terminal. The phase switch includes a high-side leg and a low-side leg. The high-side leg includes a high-side solid-state switch configured to selectively conduct current between a high-side conductor of a DC bus and the output terminal, and the low-side leg includes a low-side solid-state switch configured to selectively conduct current between the output terminal and a low-side conductor of the DC bus. The high-side solid-state switch has a first conducting-state resistance value, and the low-side solid-state switch has a second conducting-state resistance value different than the first conducting-state resistance value. A shunt resistor may be connected in series with a corresponding one of the high-side solid-state switch or the low-side solid-state switch, balancing the resistances of the high-side leg and the low-side leg. | 2022-08-11 |
20220255461 | VOLTAGE CONTROL METHOD, INVERTER, AND VOLTAGE CONTROL APPARATUS - A voltage source inverter includes a bus capacitor, a bidirectional power tube, a filter inductor, and a filter capacitor. A voltage control method includes: respectively obtaining a first feedback current and a first feedback voltage from an output end of the filter inductor and an output end of the filter capacitor; obtaining a first duty cycle and a second duty cycle based on the first feedback current, a maximum current reference value, and a minimum current reference value in a current loop; obtaining a third duty cycle based on the first feedback voltage and a voltage reference value in a voltage loop; and selecting one of the first duty cycle, the second duty cycle, and the third duty cycle, and controlling the bidirectional power tube, so that a duty cycle of the bidirectional power tube is between the first duty cycle and the second duty cycle. | 2022-08-11 |
20220255462 | POWER CONVERTER - An object of the present invention is to provide a power converter capable of preventing upsizing of a chip on which a switching element is formed and detecting the temperature in a switching operation of the switching element. A power converter includes: an IGBT connected between an IGBT connected to the positive electrode side of a variable power supply and the negative electrode side of the variable power supply; a temperature detection resistor element connected to a gate to which a gate signal for controlling the switching operation of the IGBT is input and detecting the temperature of the IGBT; and a detector detecting the temperature level of the IGBT based on the voltage of the gate. | 2022-08-11 |
20220255463 | ARTIFICIAL AIR GAP TRIBOELECTRIC DEVICE FOR APPLICATIONS IN SENSORS, POWER GENERATION AND ENERGY HARVESTING - A triboelectric device artificial air gap between the two materials to create the voltage potential. A method of using a flexible, compressive material as a spacer to create an artificial air gap that will allow the two materials to transfer electrons and provide a restorative force to separate the two materials when pressed together. The result is a device that does not require an air gap to generate a voltage potential, which in turn reduces the necessary footprint of the triboelectric device to a thin film and improves its mechanical robustness and lifetime. | 2022-08-11 |
20220255464 | TRIBOELECTRIC FIBERS, GENERATORS, AND SENSORS - Aspects of triboelectric fibers and methods of manufacture of the fibers are described. In one example, a method of manufacture of a fiber for generating energy using the triboelectric effect includes forming a preform tube, heating the preform tube in a furnace, feeding a wire through the preform tube and the furnace during the heating, and pulling the wire through the furnace to form a fiber. The methods described herein can be relied upon to manufacture fibers long enough for industrial-scale textile manufacturing, including for use with industrial-scale looms. In one example, forming the preform tube can include providing a polypropylene tube and wrapping the polypropylene tube with a housing layer of amorphous film, such as acrylic film. The acrylic film can be relied upon to maintain the form and integrity of the polypropylene as the wire is pulled, and the acrylic film can be easily removed after the pulling. | 2022-08-11 |
20220255465 | FABRIC TRIBOELECTRIC NANOGENERATOR - Disclosed herein are triboelectric nanogenerators (TENGs). Such TENGs comprise at least one tribolectric (TE) layer comprising two surfaces relative movement between which generates a TE charge, and a circuit. The circuit comprises a switch, a sensor, and a load. The switch has an open condition in which the TE charge accumulates (the accumulated TE charge), and a closed condition in which the accumulated TE charge discharges between the two surfaces across the load, the sensor determining a time constant (τ) of discharge of the accumulated TE charge across the load. | 2022-08-11 |
20220255466 | METHOD AND APPARATUS FOR GENERATING ENERGY FROM FLUID FLOW - This disclosure describes various embodiments of energy converters, such as electrical generators, that effectively use oscillations induced by flowing fluids in generating electricity by converting energy present in fluid flows, such as airflows. In one aspect, an exemplary generator converts the kinetic energy of an airflow into oscillations of a flexible film and supporting flow control structure. The film and supporting structure are surfaced with a pattern of electrical conductors that allow the system to operate as an electrostatic induction generator. | 2022-08-11 |
20220255467 | Inertia Drive Motor And Method For Controlling Such Motor - An inertia drive motor is disclosed which includes an element to be driven, and a stator, the stator having: an elastic frame, at least one friction element arranged on the elastic frame and configured to be brought into frictional contact with the element to be driven, and a first electromechanical actuator and a second electromechanical actuator, which are configured to cause, by interaction, a deformation of the elastic frame, upon excitation with different excitation voltages having a sawtooth signal, so as to displace the at least one friction element for driving the element to be driven by stick-slip contact with the friction element. | 2022-08-11 |
20220255468 | Mechanical Reinforcing Element - In an embodiment a mechanical reinforcing element includes two end regions, two angular regions, wherein the end regions are located at two opposite end faces of the reinforcing element, wherein each angular region connects to one of the end regions via a first joint, and wherein the angular regions have a stiffening structure, and a connecting portion interconnecting the two angular regions and connecting to the angular regions through second joints, wherein the mechanical reinforcing element is configured such that, upon a relative movement of the end regions with respect to each other, the connecting portion performs a movement perpendicular thereto. | 2022-08-11 |
20220255469 | PIEZOELECTRIC MOTOR, CONTROL METHOD FOR PIEZOELECTRIC MOTOR, AND ROBOT - A piezoelectric motor includes a driven body configured to rotate around a rotation axis, a first piezoelectric vibrator configured to transmit a driving force to the driven body, a moving mechanism configured to move the first piezoelectric vibrator in directions approaching and separating from the rotation axis, and a second piezoelectric vibrator configured to transmit a driving force to the moving mechanism. The moving mechanism includes a screw shaft disposed along the directions and configured to rotate around an axis with the driving force of the second piezoelectric vibrator and a holding section configured to screw with the screw shaft and hold the first piezoelectric vibrator. | 2022-08-11 |
20220255470 | CONTROL METHOD FOR PIEZOELECTRIC MOTOR AND ROBOT - A piezoelectric motor includes a driven member rotating around a rotation axis, and a plurality of piezoelectric vibrators rotating the driven member by transmitting drive forces to the driven member. The plurality of piezoelectric vibrators includes a first piezoelectric vibrator and a second piezoelectric vibrator at a larger distance from the rotation axis than the first piezoelectric vibrator. The control method for the driven member includes, for acceleration of the driven member, rotating the driven member by the drive force of the second piezoelectric vibrator when a rotation velocity of the driven member is lower than a first velocity, and rotating the driven member by the drive force of the first piezoelectric vibrator when the rotation velocity of the driven member is equal to or higher than the first velocity. | 2022-08-11 |
20220255471 | An Energy Harvesting System, Fastener, Use, and Method for the Conversion of Kinetic Energy into Electrical Energy - An energy harvesting system, fastener, use of an energy harvesting system and method for the conversion of kinetic energy into electrical energy are provided, the harvesting system being made, at least partially, of a piezoelectrical material, wherein the fastener is configured to guarantee the joining of a plurality of components of a mechanical apparatus, and the method comprising conversion of kinetic energy into electrical energy at each junction area having the disclosed fastener. | 2022-08-11 |
20220255472 | METHOD OF CONTROLLING BRAKING OF AN MULTI-PHASE ELECTRICAL MOTOR - A method of braking in an electrically powered vehicle, said vehicle including a drive system which includes a multi-phase motor electric motor, said motor comprising at least one stator group; said stator group comprising a first stator arrangement including three coils (e | 2022-08-11 |
20220255473 | MOTOR DRIVE SYSTEM - A first actuator and a second actuator each have a plurality of control calculation units provided redundantly and a plurality of motor drive units provided redundantly. In the first and the second actuators, the control calculation units of the systems paired with each other transmit and receive information to and from each other by a communication between the actuators. When a failure occurs in any system in either of the two actuators, or when a failure occurs in a communication between actuators in either system, the control calculation unit of each actuator of the system in which the failure occurred stops the motor drive control. Then, the motor drive control is continued by the control calculation unit of the normal system in both actuators. | 2022-08-11 |
20220255474 | ROTATING MACHINE CONTROL DEVICE - One or more multiphase power converters are connected to a positive electrode and a negative electrode of a power supply via a high potential line and a low potential line, respectively, convert DC power of the power supply into multiphase alternate current power by operations of a plurality of inverter switching elements, and apply a voltage to each of phase windings of a multiphase winding set. A DC rotating machine switch including switches on a high potential side and a low potential side connected in series via a DC motor terminal connected to a second terminal that is an end of the DC rotating machine on an opposite side to a first terminal. The DC rotating machine switch generates a voltage of the DC motor terminal variable by switching. A control unit controls operations of the inverter switching elements and the DC rotating machine switch. | 2022-08-11 |
20220255475 | ROTATING MACHINE CONTROL DEVICE - One or more multiphase power converters are connected to a power supply via a high potential line and a low potential line, convert DC power of the power supply into multiphase alternate current power by operations of inverter switching elements, and apply a voltage to each of phase windings of the multiphase winding set. A DC rotating machine switch are made up of two or more legs, each of which is made up of switches on a high potential side and a low potential side connected in series via a DC motor terminal connected to a second terminal that is an end of the DC rotating machine. The DC rotating machine switch makes a voltage of the DC motor terminal variable by switching. A control unit controls operations of the inverter switching elements and the DC rotating machine switch. | 2022-08-11 |
20220255476 | CONTROL DEVICE AND CONTROL METHOD FOR CONTROLLING A SENSORLESS BLDC MOTOR OF A CEILING FAN - A control method is to be implemented by a control device, and includes: (A) storing a database that contains control parameter sets which respectively correspond to different types of sensorless BLDC motors; (B) detecting a resistance and an inductance of a sensorless BLDC motor of a ceiling fan, and searching the database, based on at least the detected resistance and the detected inductance, for one of the control parameter sets that corresponds to the sensorless BLDC motor of the ceiling fan; (C) detecting a back-EMF of the sensorless BLDC motor of the ceiling fan; and (D) generating a driver control signal based on said one of the control parameter sets and the detected back-EMF to drive the sensorless BLDC motor of the ceiling fan. | 2022-08-11 |
20220255477 | MOTOR SYSTEM AND MOTOR DRIVING METHOD - The present disclosure relates to a motor driving method, which includes the following steps: detecting a detected voltage value between a first switch and a second switch in a driving circuit, wherein the driving circuit is configured to control the first switch and the second switch according to a switching frequency to provide a driving current to a motor device; determining a driving current according to the detected voltage value; when the driving current is less than a predetermined value, the first switch and the second switch are turned off for a detection period, wherein the length of the detection period is a fixed value; during the detection period, detecting a back electromotive force to calculate a zero crossing time of the back electromotive force; and adjusting the switching frequency according to the zero crossing time. | 2022-08-11 |
20220255478 | CONTROL UNIT FOR OPERATING AN ELECTRICAL MACHINE, ELECTRICAL MACHINE, AND METHOD - A control unit for operating an electrical machine which includes a rotor, a stator, and power electronics. The power electronics have a plurality of switching elements, by which the phases of the stator winding are connected/connectible electrically to an electrical energy store. The control unit includes first and second processing units and is configured to determine control signals for controlling the switching elements, using the processing units. The first processing unit is configured to determine a magnitude of a setpoint voltage vector for the phases based on a setpoint rotational speed of the rotor and an actual rotational speed of the rotor. The second processing unit is connected to the first processing unit so as to be able to communicate with it, and being configured to determine the control signals as a function of the magnitude of the setpoint voltage vector and an actual angle of rotation of the rotor. | 2022-08-11 |
20220255479 | FIELD-ORIENTED SENSORLESS BRUSHLESS MOTOR CONTROL IN A POWER TOOL - A power tool is provided including a housing, a brushless motor disposed within the housing, a power switch circuit that supplies power from a power source to the brushless motor, and a controller configured to apply a drive signal to the power switch circuit to control the supply of power to the brushless motor. The controller is configured to receive at least one signal associated with a phase current of the motor, detect an angular position of the rotor based on the phase current of the motor within a variable speed range of zero to at least 15,000 rotations-per-minute (RPM), and control the drive signal based on the detected angular position of the rotor to electronically commutate the motor within a power output of zero to at least 1500 watts. | 2022-08-11 |
20220255480 | SYSTEMS AND METHODS FOR HIGH PERFORMANCE FILTERING TECHNIQUES FOR SENSORLESS DIRECT POSITION AND SPEED ESTIMATION - Disclosed are implementations, including a method that includes obtaining measurement samples relating to electrical operation of an electric motor drive providing power to an electric motor, deriving, based on the samples, instantaneous estimates for parameters characterizing speed and/or position of the motor according to an optimization process based on a cost function defined for the samples, and applying a filtering operation to the instantaneous estimates to generate filtered values of the motor's speed and/or position. The filtering operation includes computing the filtered values using the derived instantaneous estimates in response to a determination that a computed convexity of the cost function is greater than or equal to a convexity threshold value, and/or applying a least-squares filtering operation to the derived instantaneous estimates and using at least one set of previous estimates derived according to the optimization process applied to previous measurement samples. | 2022-08-11 |
20220255481 | ELECTRIC POWER CONVERSION WITH PHASE CORRECTION - A power conversion device include: a power conversion circuitry configured to generate a driving voltage for an electric motor; and control circuitry configured to: control the power conversion circuitry to generate the driving voltage corresponding to a voltage command; acquire information indicating an output current that has flown to the electric motor according to the driving voltage; calculate a phase error based on the voltage command, the output current, and an inductance of the electric motor; calculate an updated voltage command based on a frequency command, the output current, and the inductance, wherein the updated voltage command has a command phase; calculate a phase error based on the voltage command, the output current, and the inductance; correct the command phase based on the phase error; and control the power conversion circuitry to generate the driving voltage corresponding to the updated voltage command having the corrected command phase. | 2022-08-11 |
20220255482 | LOW-VOLTAGE FAULT-TOLERANT ROTATING ELECTROMECHANICAL ACTUATORS, AND ASSOCIATED SYSTEMS AND METHODS - A representative fault-tolerant rotating electromechanical actuator comprises a permanent magnet synchronous motor with first and second windings that each comprise three phases. First and second voltage source inverters (VSI) provide output signals independently with respect to each other. The first VSI provides output signals to drive the three phases of the first winding, and the second VSI provides output signals to drive the three phases of the second winding. The three phases of the first winding are driven simultaneously with the three phases of the second winding. Control electronics monitor signals associated with the three phases of the windings and detect a fault condition within a first phase of the first winding. The control electronics command the first VSI to drive only second and third phases of the first winding while simultaneously commanding the second VSI to drive the three phases of the second winding. | 2022-08-11 |
20220255483 | DRIVING CIRCUIT AND METHOD, FREQUENCY CONVERTER, DEVICE AND COMPUTER READABLE STORAGE MEDIUM - The present disclosure relates to a driving circuit and method, a frequency converter, a device and a computer readable storage medium. The circuit includes: a rectifier unit including a first input terminal, a second input terminal and an output terminal, wherein the output terminal of the rectifier unit is connected to an input terminal of the inverter unit, and the second input terminal of the rectifier unit is connected to the input terminal of the inverter unit a first switch arranged between the first input terminal of the rectifier unit and an output terminal of the inverter unit, and configured to control the driving circuit to switch between a series mode and a parallel mode by being switched on or off; the inverter unit with the output terminal connected to a load; and a capacitor connected in parallel between the rectifier unit and the inverter unit. | 2022-08-11 |
20220255484 | POWER CONVERSION DEVICE AND ELECTRIC DRIVE UNIT - Provided is a power conversion device including an all-solid-state battery, a power converter that converts power between the all-solid-state battery and a load, and a thermal coupling member that thermally couples the all-solid-state battery and the power converter. | 2022-08-11 |
20220255485 | MULTIPHASE VOLTAGE TRANSFORMER FOR A SUPPLY NETWORK AND METHOD FOR POWERING DOWN AN INTERMEDIATE CIRCUIT VOLTAGE OF THIS SUPPLY NETWORK - A multiphase voltage transformer for an electrical supply network for supplying an electrical machine with electrical energy from an electrical energy storage system. This electrical supply network includes the multiphase voltage transformer, an output current converter connected downstream of this transformer and an intermediate circuit connected between the transformer and the output current converter. The transformer includes a circuit arrangement having parallel-connected voltage transformer units at the input end, each of these units having an inductance and two semiconductor switch units and a control unit for actuating the semiconductor switch units. The control unit is configured so as to actuate the semiconductor switch units in an intermediate circuit discharging operation such that it powers down the intermediate circuit voltage of the intermediate circuit in less than a second into the low voltage range. A corresponding electrical supply network, an energy supply system having network and a method are provided. | 2022-08-11 |
20220255486 | DIRECT CURRENT POWER SUPPLY DEVICE, MOTOR DRIVE APPARATUS, BLOWER, COMPRESSOR, AND AIR CONDITIONER - A direct current power supply device includes: a reactor; a converter connected to an alternating current power supply via the reactor; a smoothing capacitor connected between output terminals of the converter; an inrush current preventing circuit disposed on a charging path from the alternating current power supply to the smoothing capacitor; a current detection unit detecting direct current representing an operating state on an output side of the converter; a current detection unit detecting power supply current representing an operating state on an input side of the converter; and a control unit receiving the direct current and the power supply current and controlling an operation of the converter. The control unit receives a detected value of saturated current from at least one of the direct current and the power supply current when the power supply voltage recovers from a state in which the power supply voltage is reduced. | 2022-08-11 |
20220255487 | SYSTEMS AND METHODS FOR ADAPTING PULSE WIDTH MODULATION WITH RANDOMIZED ZERO-SEQUENCE - Methods and systems are provided for adapting pulse width modulation with randomized zero-sequence components for control of an electrified powertrain of a vehicle. In one example, a method may include determining a zero-sequence voltage of an electric machine of the vehicle based on a random distribution, and adjusting a voltage reference signal of the electric machine based on the determined zero-sequence voltage to decrease ambient acoustic noise in the vehicle. In this way, spectral energy dispersion of pulse width modulated control of the electric machine may be increased without affecting torque production of the electric machine. | 2022-08-11 |
20220255488 | CONTROL DEVICE, INVERTER, ASSEMBLY HAVING AN INVERTER AND AN ELECTRIC MACHINE, METHOD FOR OPERATING AN INVERTER AND COMPUTER PROGRAM - A control device ( | 2022-08-11 |
20220255489 | SYSTEMS AND METHODS FOR COMPONENT MONITORING IN AN ELECTRIC MOTOR - A motor controller for an electric motor is provided. The motor controller includes an inverter configured to supply current to stator windings of the electric motor. The motor controller further includes a plurality of sensors configured to generate a sensor signal in response to detecting a parameter. The sensor signal represents a measured parameter. The motor controller further includes a processor coupled in communication with the inverter and with the plurality of sensors. The processor is configured to, in a first mode, transmit a control signal to the inverter to operate the electric motor at a first frequency. The processor is further configured to receive the sensor signal from the plurality of sensors. The processor is further configured to determine a first fault condition is present at the electric motor based on the measured parameter represented by the sensor signal. | 2022-08-11 |
20220255490 | BATTERY PACK AND METHOD OF MANUFACTURE - A method of manufacturing a battery pack including the creation of a support board for enabling conversion of the battery pack from providing a first voltage to providing a second voltage. The support board is created by injection molding about a precut set of power traces for coupling a converting element to a plurality of battery cells. The power traces couple the plurality of battery cells to a set of battery pack terminals. The support board may be mechanically coupled to a battery cell holder. | 2022-08-11 |
20220255491 | COOLING CONTROL DEVICE - A cooling control device has an inverter control unit that executes switching control of an inverter for driving a rotary electric machine, and a cooling control unit. On condition that the switching control is stopped, if it is judged that a control temperature is below a threshold value thereof, the cooling control unit executes driving and control of a cooling device such as to lower a degree of cooling of a cooling target component below the degree of cooling when it is judged that the control temperature is above the threshold value. The cooling target component is composed of at least one of the rotary electric machine and the inverter. The control temperature is either a detected temperature value of the cooling target component or an estimated temperature value from a temperature estimation unit that estimates the temperature of the cooling target component. | 2022-08-11 |
20220255492 | RADIATIVE MICRON-GAP THERMOPHOTOVOLTAIC SYSTEM WITH TRANSPARENT EMITTER - A thermophotovoltaic panel assembly including a heat sink and a plurality of thermophotovoltaic modules mounted on the heat sink. Each thermophotovoltaic module includes a photovoltaic element separated from an emitter assembly by a gap. The emitter assembly includes an emitter and applies force towards the photovoltaic element to maintain the gap. The thermophotovoltaic panel assembly may also utilize a force application layer on the emitter and be bolted in place. A housing can be used for protection and to transfer energy to the emitter. The heat sink cantilevers into the housing to define a space between the thermophotovoltaic modules and the inner surface of the housing. Preferably, the housing maintains a vacuum and, in turn, the gap is evacuated. The heat sink can be monolithic and cooled with fluid pumped therethrough. The emitter may be transparent or at least partially transmissive. | 2022-08-11 |
20220255493 | TRANSPARENT ROOF PANEL HAVING AN ISOLATED CENTER UNIT - A transparent panel for use in a vehicle roof of a vehicle comprises a layered stack comprising a first and a second transparent pane and an electrically conductive assembly arranged between the second and the third main surface, wherein a through hole is provided in the second pane. The panel further comprises an electric apparatus mounted on a passenger compartment side covering the through hole. The electric apparatus is electrically coupled to the electrically conductive assembly through the through hole. The electrically conductive assembly electrically couples a first and a second terminal and is arranged between and adjacent to the first and the second terminals, wherein an optical transmissivity of the transparent panel is not visually deteriorated in an area of the electrically conductive assembly around the electric apparatus. | 2022-08-11 |
20220255494 | Modular Sloped Roof Solar Mounting System - A mounting system for supporting a plurality of photovoltaic modules on a sloped support surface, such as a sloped roof, is disclosed herein. The mounting system may include one or more support surface attachment devices, each support surface attachment device configured to attach one or more photovoltaic modules to a support surface; and one or more module coupling devices, each module coupling device configured to couple a plurality of photovoltaic modules to one another. | 2022-08-11 |
20220255495 | Tilting Arrangement for a Photovoltaic Module Rack - An arrangement for a photovoltaic module, the arrangement including at least one support member and a tilting rack, the tilting rack including at least one beam and at least one rafter, in which the at least one beam is operatively connected to at least one end of the at least one rafter, in which the tilting rack is operatively connected to the at least one support member at or near a center of gravity of the at least one rafter, and in which the titling rack is configured to rotate at or near the center of gravity of the at least one rafter. | 2022-08-11 |
20220255496 | Rail for a Photovoltaic Module Arrangement - A rail for a photovoltaic module arrangement, the rail including a body having at least a top portion, a middle portion, and a bottom portion, the top portion including at least one upper edge in which at least one end of the upper edge defines an angle configured to receive a photovoltaic module on the body, the middle portion including at least one side edge, and the bottom portion including at least a bottom edge. | 2022-08-11 |
20220255497 | PHOTOVOLTAIC FRAME, PHOTOVOLTAIC MODULE AND METHOD FOR MANUFACTURING PHOTOVOLTAIC FRAME - Disclosed are a photovoltaic frame and a photovoltaic module. The photovoltaic frame includes a top support portion, a bottom support portion, a transverse edge portion, a first side edge portion and a second side edge portion. The top support portion, the transverse edge portion and the second side edge portion enclose a holding slot, and the top support portion has a bearing surface facing the holding slot. The photovoltaic frame alternatively includes a third side edge portion configured to connect the top support portion and the bottom support portion. The photovoltaic frame further includes a weather-resistant protective layer, covering a part of outer surfaces, that are in contact with external environment, among the top support portion, the bottom support portion, the first side edge portion, the second side edge portion, the transverse edge portion, and the third side edge portion if included. | 2022-08-11 |
20220255498 | PHOTOVOLTAIC FRAME, PHOTOVOLTAIC MODULE AND METHOD FOR MANUFACTURING PHOTOVOLTAIC FRAME - Disclosed are a photovoltaic frame and a photovoltaic module. The photovoltaic frame includes a top support portion, a bottom support portion, a transverse edge portion, a first side edge portion and a second side edge portion. The top support portion, the transverse edge portion and the second side edge portion enclose a holding slot. The photovoltaic frame further includes a first weather-resistant protective layer configured to cover a part of outer surfaces of the top support portion, the bottom support portion, the first side edge portion, the second side edge portion and the transverse edge portion, and a second weather-resistant protective layer configured to cover at least part of the outer surfaces that are not covered by the first weather-resistant protective layer. A thickness of the second weather-resistant protective layer is less than a thickness of the first weather-resistant protective layer. | 2022-08-11 |
20220255499 | DEPLOYABLE SOLAR ARRAY APPARATUS - A deployable solar array apparatus. There is a telescoping mast, being actuatable between an extended mode and a retracted mode; a pivoting head, coupled to a top portion of the telescoping mast; a plurality of arms, circumferentially and pivotally coupled to the head and extending outwardly therefrom, and actuatable between an extended mode and a retracted mode; and a plurality of solar panels coupled to exterior surfaces of the head and arms. | 2022-08-11 |
20220255500 | SOLAR POWER GENERATION SYSTEM - The solar power generation system includes a string, an inverter, and a shut-off device. The string includes a plurality of solar cell modules connected in series. The inverter is connected to the string and is configured to convert the DC power output from the solar cell modules to AC power. The shut-off device is disposed at a plurality of intermediate points of the string and is configured to shut off a voltage output from the solar cell modules in response to a control signal from the inverter. | 2022-08-11 |
20220255501 | Flexible Ground Path Connector - A flexible ground path connector for a photovoltaic module system, the flexible ground path connector including a body, a first attachment portion provided on a first end of the body, and a second attachment portion provided on a second end of the body, the second end of the body opposing the first end of the body, wherein at least the body is made of a substantially flexible material, and wherein the first attachment portion is configured to attach to a first photovoltaic module rack and the second attachment portion is configured to attach to a second photovoltaic module rack. | 2022-08-11 |
20220255502 | SOLAR POWER GENERATION NETWORK SHUT-OFF UNIT AND A SOLAR POWER GENERATION NETWORK SHUT-OFF SYSTEM PROVIDED WITH SAME - A solar power generation network shut-off unit comprises a first circuit breaker and second circuit breakers. The first circuit breaker is provided to a power line connecting a plurality of solar power generation modules and a power conditioner in series. When an emergency shut-off button is pressed, the supply of power from the solar power generation modules through the power line is shut-off, and an emergency shut-off signal is transmitted. The second circuit breakers are provided to each of a plurality of solar power generation modules, and when an emergency shut-off signal is received from the first circuit breaker, the supply of power from the plurality of solar power generation modules through the power line is shut-off. | 2022-08-11 |
20220255503 | SYSTEM FOR EVALUATING HARDWARE - A system for evaluating a power electronics module, such as a photovoltaic (PV) module or an energy-storage system (ESS) module, is provided. The power electronics module may form a component of a multiport autonomous reconfigurable solar (MARS) power plant, which may include a plurality of phase-legs each including an upper arm and the lower arm. | 2022-08-11 |