In Transistor Inverter Systems Patents (Class 363/131)
  • Patent number: 11398818
    Abstract: A semiconductor device includes an inverter circuit having a first switching element and a second switching element, a first control circuit, a second control circuit, and a limiting unit. The first switching element is supplied with a power supply voltage. The second switching element includes a first terminal connected to the first switching element, a second terminal connected to ground, and a control terminal. The first control circuit controls the first switching element. The second control circuit controls the second switching element. The limiting unit reduces fluctuation in voltage between the second terminal and the control terminal based on voltage fluctuation at the second terminal of the second switching element.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: July 26, 2022
    Assignee: ROHM CO., LTD.
    Inventor: Yuji Ishimatsu
  • Patent number: 11394333
    Abstract: A control method for a motor system, the motor system having a battery; a boost converter configured to increase DC voltage supplied by the battery; an inverter connected to the boost converter and configured to execute a conversion between DC power and AC power; and a motor generator connected to the inverter. The control method comprising: a limiting power determination step of determining a limiting power in response to an operating point of the motor generator such that an oscillation of a terminal voltage of the boost converter at a side of the inverter is suppressed; and a controlling step of controlling the operating point of the motor generator such that a passing power of the boost converter does not exceed the limiting power.
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: July 19, 2022
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Toshio Ouchi, Kenichi Mori, Yoshihiro Kondo
  • Patent number: 11387765
    Abstract: A system and method for controlling a DC midpoint terminal voltage of a three level inverter is provided. The method includes receiving an input power signal at a three level motor control system that includes a three level inverter, the three level inverter powering an electric motor, determining, in the three level motor control system, a speed value of the electric motor, and adjusting a zero-sequence inverter output voltage to adjust a midpoint voltage at the DC midpoint based on the determined speed value.
    Type: Grant
    Filed: March 13, 2020
    Date of Patent: July 12, 2022
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Jordan K. Vanevenhoven, Curtis J. Plude, Gary L. Miles
  • Patent number: 11381080
    Abstract: A frequency adaptive harmonic current generator, including a microcontroller board (15) used for controlling the generation of harmonic currents and frequency adaptive operating function; an electronic relay (11) controlled and switched over the digital output of the microcontroller (21), the resistor (23) and the transistor (24); a data collection unit (13) to which the voltage divider (5), the buffer (6) and the current shunt (8) are connected for the measurement of voltage and current harmonics and which reads the current and voltage values and transfers such values to the panel type computer (14); and a panel type computer (14) which includes software for making, presenting and recording the measurements, the external connections of which are ensured by USB connectors (18) and a LAN connector (19), which displays the measurement values to the user, and which has push-button (20) for switching on/off operations.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: July 5, 2022
    Assignee: TUBITAK
    Inventors: Huseyin Cayci, Kaan Gulnihar, Tansu Kefeli
  • Patent number: 11356033
    Abstract: A converter assembly has a converter with multiple converter valves, each with a plurality of semiconductor switches, and with a stored energy source branch which is connected in parallel with at least one of the converter valves. The stored energy source branch has voltage converter modules and stored energy source modules. The voltage converter modules are connected to one another in a series circuit on the input side and to the respectively associated stored energy source module on the output side. There is also described an assembly having the stored energy source branch and a method for stabilizing an alternating current system by way of the converter assembly.
    Type: Grant
    Filed: July 4, 2018
    Date of Patent: June 7, 2022
    Assignee: Siemens Energy Global GmbH & Co. KG
    Inventors: German Kuhn, Oliver Kuhn, Hubert Rubenbauer
  • Patent number: 11348903
    Abstract: A semiconductor module includes: an upper arm module including a semiconductor chip; and a lower arm module including a semiconductor chip. The lower arm module is provided with: a facing section in which a lead frame and a lead frame each having a strip shape are disposed such that a main surface of the lead frame and a main surface of the lead frame face each other; and a non-facing section in which the lead frame and the lead frame are disposed such that the main surface of the lead frame and the main surface of the lead frame do not face each other.
    Type: Grant
    Filed: May 30, 2018
    Date of Patent: May 31, 2022
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Shinya Yano
  • Patent number: 11350503
    Abstract: A power converter can include: an input circuit, including a primary winding and a primary power switch which are coupled in series between an input terminal and a first ground; at least one constant voltage output circuit, including a first secondary winding coupled with said primary winding; and at least one constant current output circuit, including a second secondary winding coupled with said primary winding, a secondary power switch, a current output port, a second rectifier circuit and a current sampling circuit. The second rectifier circuit can be coupled between the current output port and the second secondary winding, the current output port can be coupled to an LED as a load, the LED may be coupled between one end of the second secondary winding and a second ground, and the secondary power switch and the current sampling circuit can connect in series.
    Type: Grant
    Filed: January 13, 2021
    Date of Patent: May 31, 2022
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventors: Jian Li, Wei Chen
  • Patent number: 11342853
    Abstract: 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.
    Type: Grant
    Filed: December 10, 2020
    Date of Patent: May 24, 2022
    Assignee: Infineon Technologies Austria AG
    Inventors: Gerald Deboy, Johann Kolar, Dominik Neumayr
  • Patent number: 11323042
    Abstract: A power conversion device according to an embodiment includes an element unit and a capacitor unit. The element unit includes a first positive electrode bus, a first negative electrode bus, and a first outer frame member. The capacitor unit includes a second positive electrode bus, a second negative electrode bus, and a second outer frame member. The first outer frame member and the second outer frame member are separable from each other. The first positive electrode bus and the second positive electrode bus are removably connected to each other. The first negative electrode bus and the second negative electrode bus are removably connected to each other.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: May 3, 2022
    Assignee: TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION
    Inventors: Mitsuru Hano, Kenji Uetani
  • Patent number: 11323035
    Abstract: A DC voltage-pulse voltage converter comprises connected in series a high DC voltage source, a first controllable switch, an inductive load, a second controllable switch, an electronically controlled resistor (ECR), and a limiting resistor, as well as a controllable square wave generator, and the first and the second control voltage drivers. Providing the second control voltage driver and the ECR allows regulating the value (amplitude) of the current flowing through the inductive load. As the amplitude of the current decreases, so does the level of EMI.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: May 3, 2022
    Assignee: Drive CJSC
    Inventors: Yuriy I. Romanov, Stanislav V. Maletskiy
  • Patent number: 11312223
    Abstract: A vehicle controller is configured to execute a duty cycle control process of alternately repeating an electric power generation execution period and an electric power generation stop period of an electric generator and controlling a duty cycle, which is a ratio of the electric power generation execution period to a single cycle of repeated cycles, when determining that an anomaly has occurred in a driving circuit. The duty cycle control process includes at least one of two processes, a process of setting the duty cycle to be larger when a member in an overheatable region, in which overheating is possibly performed by the heater, has a low temperature than when the member has a high temperature and a process of setting the duty cycle to be larger when an internal combustion engine has a large intake air amount than when the engine has a small intake air amount.
    Type: Grant
    Filed: April 26, 2019
    Date of Patent: April 26, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Makio Tsuchiyama
  • Patent number: 11316459
    Abstract: A control system for an electric motor comprises a controller which receives as an input a demanded motor current and produces at an output an intermediate voltage demand signal, a voltage demand signal correction means arranged to generate a voltage demand correction signal, and a combining means arranged to combine the intermediate voltage demand signal and the voltage demand correction signal to produce an actual voltage demand signal that is applied to the motor by pulse width modulation of the switches of a motor bridge driver. The correction signal compensates for unwanted non-linearities caused by interlock delays in the switching of the motor bridge switches.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: April 26, 2022
    Assignees: ZF Active Safety and Electronics US LLC, ZF Friedrichshafen AG
    Inventors: Christopher David Dixon, Connel Brett Williams, Prerit Terway, Abraham Ghafari, Hassan Lamsahel, Mesut Er
  • Patent number: 11309791
    Abstract: A voltage conversion system including a source configured to supply a voltage and a switch capacitor circuit electrically coupled to the source. The switch capacitor circuit is configured to switch between a discharging state and a charging state. The switching between the discharging state and the charging state produces a boost to the supplied voltage. The voltage conversion system includes a capacitor in the switch capacitor circuit configured to store charge during the charging state and drain charge during the discharging state. The voltage conversion system includes a switching arrangement having a plurality of switch pairs configured to supply a converted voltage to a load. The switch capacitor circuit and the switching arrangement are interfaced to produce a unified circuit.
    Type: Grant
    Filed: February 11, 2020
    Date of Patent: April 19, 2022
    Assignee: Board of Trustees of Michigan State University
    Inventors: Ameer Janabi, Bingsen Wang
  • Patent number: 11297744
    Abstract: A capacitor and a discharge resistor can be connected using a simplified configuration without using a bus bar. A connection of a capacitor and a discharge resistor of a power conversion device are carried out using wire harnesses that form positive and negative lines. The capacitor and the discharge resistor are integrated by being directly connected using a first wire harness. A second wire harness is drawn out from a terminal portion electrically separated from a first terminal portion of the capacitor; and a third wire harness is drawn out from the discharge resistor, where the second wire harness and the third wire harness are fastened.
    Type: Grant
    Filed: August 14, 2020
    Date of Patent: April 5, 2022
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kota Hozumi, Masahiro Noguchi
  • Patent number: 11296639
    Abstract: The present invention relates to an inverter which is capable of adjusting an output frequency of a three-phase voltage output to a motor based on a result of comparison in magnitude between the minimum operating voltage of the motor and a DC link voltage applied to a DC link. The inverter includes: a measurement part configured to measure a DC link voltage applied to a DC link; a conversion part configured to convert the DC link voltage into a three-phase voltage and output the three-phase voltage to the motor; and a control part configured to make comparison in magnitude between the DC link voltage and the minimum operating voltage of the motor and adjust an output frequency of the three-phase voltage based on a result of the comparison.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: April 5, 2022
    Assignee: LSIS CO., LTD.
    Inventor: Hyo-Jin Kim
  • Patent number: 11293990
    Abstract: A sensor unit includes a plurality of bus bars connected to a plurality of switch modules, a terminal block that integrally links the bus bars, and a plurality of magnetoelectric conversion parts that detect currents flowing through the bus bars. Embedded parts of the bus bars embedded in the terminal block are aligned in a first predefined direction with spaces therebetween. The magnetoelectric conversion parts are provided in the terminal block such that they face the embedded parts. Extension parts, extending in the first predefined direction, of any two embedded parts adjacent to each other in a predefined direction adjoin each other in a second predefined direction that intersects the first predefined direction.
    Type: Grant
    Filed: June 17, 2020
    Date of Patent: April 5, 2022
    Assignee: DENSO CORPORATION
    Inventor: Satoshi Yamaura
  • Patent number: 11289917
    Abstract: Different systems to achieve solar power conversion are provided in at least three different general aspects, with circuitry that can be used to harvest maximum power from a solar source (1) or strings of panels (11) for DC or AC use, perhaps for transfer to a power grid (10) three aspects can exist perhaps independently and relate to: 1) electrical power conversion in a multimodal manner, 2) alternating between differing processes such as by an alternative mode photovoltaic power converter functionality control (27), and 3) systems that can achieve efficiencies in conversion that are extraordinarily high compared to traditional through substantially power isomorphic photovoltaic DC-DC power conversion capability that can achieve 99.2% efficiency or even only wire transmission losses. Switchmode impedance conversion circuits may have pairs of photovoltaic power series switch elements (24) and pairs of photovoltaic power shunt switch elements (25).
    Type: Grant
    Filed: July 19, 2021
    Date of Patent: March 29, 2022
    Assignee: AMPT, LLC
    Inventors: Anatoli Ledenev, Robert M. Porter
  • Patent number: 11258367
    Abstract: A power converter comprises a buck converter portion, an energy storage portion, and a controller. A first inductor is connected between the cathode of a first diode at an input node, and a capacitor at an output node. The input node is connected to an input voltage via a first switch. A second inductor in the energy storage portion is magnetically coupled to the first inductor and is connected to a second diode. The cathode of the second diode is connected to a first terminal of the energy storage element, and a second terminal of the energy storage element is connected to a second terminal of the second inductor. The first terminal of the energy storage element is connected to the input node via a second switch. When the input voltage is not less than a threshold, the second switch is opened.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: February 22, 2022
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Jaspreet Kaur Mann, Andrew McLean
  • Patent number: 11251720
    Abstract: This application provides a method and an apparatus for controlling a grid-tie inverter. The method includes: acquiring an output voltage of the grid-tie inverter and an output current value of the grid-tie inverter at a current moment; calculating N output current values of the grid-tie inverter at a next moment that is in one-to-one correspondence to N switch states of the grid-tie inverter based on the output current value at the current moment, and N is a natural number greater than or equal to 2; acquiring a first reference current based on the output voltage; acquiring a second reference current based on the output current and the first reference current; determining a first switch state; and controlling the grid-tie inverter to perform power transmission in the first switch state at the next moment.
    Type: Grant
    Filed: September 27, 2021
    Date of Patent: February 15, 2022
    Assignee: Jiangsu Contemporary Amperex Technology Limited
    Inventors: Weichen He, Zhimin Dan, Jinfeng Gao, Yizhen Hou
  • Patent number: 11251619
    Abstract: A method performed by a network controller of an electrical microgrid having a plurality of energy storages. Each of the energy storages is associated with a respective storage controller. The method includes receiving information about a measurement made at a remote location in the microgrid. The method also includes obtaining respective participation factors in respect of the remote location for each of at least a first energy storage and a second energy storage of the plurality of energy storages. The method also includes obtaining respective states of charge for each of the at least first and second energy storages. The method also includes, for each of the at least first and second energy storages, calculating a reference value for the energy storage, and sending the reference value to the storage controller with which the energy storage is associated. The calculating includes calculating the reference value based on the obtained participation factors and the obtained states of charge.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: February 15, 2022
    Assignees: Hitachi Energy Switzerland AG, ABB Schweiz AG
    Inventor: Ritwik Majumder
  • Patent number: 11239779
    Abstract: A method of controlling a power converter, connected to an electrical grid, to mimic a synchronous generator, by: determining a frequency control error with respect to a setpoint and actual frequency of the grid, determining an input power to an inertia model of a synchronous generator based on the frequency control error, regulating by means of the input power a rotational frequency of the inertia model, determining a voltage control error with respect to a setpoint and actual voltage, determining an exciter parameter of a synchronous generator model based on the voltage control error, regulating by means of the exciter parameter an output voltage of the synchronous generator model, adjusting the rotational frequency or a phase angle obtained from the rotational frequency, and the output voltage based on a virtual impedance of a stator of the synchronous generator model, and controlling the power converter based on the adjusted rotational frequency or the adjusted phase angle and on the adjusted output volta
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: February 1, 2022
    Assignee: ABB Schweiz AG
    Inventors: Andrew Tuckey, Simon Walton
  • Patent number: 11239751
    Abstract: A method is provided for setting an operating parameter for a DC to DC voltage converter. A load is operated, using a controller, with the operating parameter at a first value. A measurement of an actual inductor current at an inductor of the DC to DC voltage converter, a measurement of an actual load current are provided. The method then determines a reference value for the inductor current, based on the actual load current combined with an inductor current adjustment value based on a desired output voltage at the DC load. The reference value for the inductor current is then compared to the actual inductor current, and the operating parameter is maintained at the first value if the reference value is greater than the actual inductor current. The operating parameter is changed to a second value if the reference value is less than the actual inductor current.
    Type: Grant
    Filed: April 28, 2020
    Date of Patent: February 1, 2022
    Assignee: KARMSOLAR
    Inventors: Ahmed Teirelbar, Bassem Saleh, Amr Wasfi
  • Patent number: 11214151
    Abstract: A voltage control system includes: a converter controlling portion; a current value acquisition portion; and a voltage value acquisition portion. The converter controlling portion sets a duty ratio in a present cycle by adding an addition term to a feedforward term, the addition term being determined by use of a current deviation, which is a difference between a target value of an output current in the present cycle and a current measured value in a previous cycle, and the duty ratio in the previous cycle, the addition term being corresponding to an increase of the output current in the present cycle.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: January 4, 2022
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yutaka Tano, Kenji Umayahara, Takahiro Umehara
  • Patent number: 11171480
    Abstract: In a switching power supply device including an overload protection circuit, when a load state turns into an overload state due to a decrease in an input voltage, an overload protection signal is activated in response to activation of an overload detection signal, and the overload protection signal is deactivated when an input low voltage detection signal is in an inactive state.
    Type: Grant
    Filed: February 19, 2019
    Date of Patent: November 9, 2021
    Assignee: NUVOTON TECHNOLOGY CORPORATION JAPAN
    Inventors: Takashi Saji, Tomoko Usukura
  • Patent number: 11165345
    Abstract: A multi-level boost apparatus. Voltage allocation among N first switches is achieved by connecting N voltage dividing modules, sequentially connected in series, in parallel with the N first voltage switches, respectively. Thereby, a voltage across each of the N first switches is within a safety range. Even if an input voltage is high and a voltage across a flying capacitor is zero at an instant of being powered, it is prevented that a second one to an N-th one of the N first switches break down due to overvoltage.
    Type: Grant
    Filed: August 9, 2019
    Date of Patent: November 2, 2021
    Assignee: SUNGROW POWER SUPPLY CO., LTD.
    Inventors: Jiacai Zhuang, Jun Xu, Bing Zhang, Peng Wang, Peng Wen
  • Patent number: 11165351
    Abstract: A conversion apparatus with oscillation reduction control includes a conversion circuit and an oscillation reduction control circuit. The conversion circuit includes a transformer, a rectifying circuit, and a first switch. The oscillation reduction control circuit stores a leakage inductance energy of the transformer when the first switch is turned off, and the oscillation reduction control provides the leakage inductance energy to a primary-side winding of the transformer when the first switch is turned on.
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: November 2, 2021
    Assignee: Asian Power Devices Inc.
    Inventors: Yeu-Torng Yau, Tsung-Liang Hung
  • Patent number: 11152847
    Abstract: In this invention we introduce the concept of energy injection in a resonant circuit with initial conditions which is part of almost all of the present topologies. The patent will present in details several methods of energy injection in a resonant circuit with initial conditions and how it is applies to different topologies. The patent presents also a simple and economical method of driving the clamp switch in a flyback topology operating in discontinuous mode and a bias circuit in a flyback topology wherein the output voltage varies over a large range.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: October 19, 2021
    Assignee: RompowerTechnology Holdings, LLC
    Inventor: Ionel Jitaru
  • Patent number: 11146066
    Abstract: A system and a method for locally controlling delivery of electrical power along the distribution feeder by measuring certain electricity parameters of a distribution feeder line using a substation phasor measurement unit (PMU) electrically coupled to a substation distribution bus at a first node on the feeder line, and at least one customer site PMU electrically coupled to a low voltage end of a transformer at a customer site, wherein the transformer is coupled by a drop line to a second node on the distribution feeder line and the customer site is coupled by another drop line to the transformer, and by controlling at least one controllable reactive power resource and optionally a real power resource connected to the second node or at the customer site. Related apparatus, systems, articles, and techniques are also described.
    Type: Grant
    Filed: October 11, 2019
    Date of Patent: October 12, 2021
    Assignee: Power Management Holdings (U.S.), Inc.
    Inventors: Malcolm Stuart Metcalfe, Severin Nowak, John Todd Sankey, Eric Young
  • Patent number: 11139734
    Abstract: A DC-DC power converter including: input terminals for receiving an input voltage; a pulse wave generator for generating a pulse wave; a transformer having a primary winding and a secondary winding and a magnetizing inductance; a DC blocking capacitor; a rectifier; a filter capacitor; at least one resonant inductor connected in series with the transformer; a resonant capacitor connected to the rectifier; output terminals; and a control unit for controlling operation of the pulse wave generator such when the duty cycle of the pulse wave voltage varies, high efficiency is maintained.
    Type: Grant
    Filed: November 24, 2019
    Date of Patent: October 5, 2021
    Inventor: Tal Abramovici
  • Patent number: 11133776
    Abstract: Discussed is a photovoltaic module including: a solar cell module including a plurality of solar cells; a converter to convert a level of first direct current (DC) power input from the solar cell module, and to output second DC power; an inverter to convert the second DC power supplied from the converter into alternating current (AC) power; and a controller to control the converter and the inverter, wherein the converter comprises: a full-bridge switching part to switch the first DC power; a transformer having an input side connected to an output terminal of the full-bridge switching part; and a half-bridge switching part connected to an output side of the transformer, wherein the controller changes a switching frequency of the full-bridge switching part and the half-bridge switching part in a first section of a waveform.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: September 28, 2021
    Assignee: LG ELECTRONICS INC.
    Inventors: Giyob Park, Myonghwan Kim, Byoungsu Yoon, Youngbok Jung, Kyungsoo Jung
  • Patent number: 11075502
    Abstract: Techniques to achieve higher power/shorter pulses with a laser diode. By initially applying a static reverse bias across the laser diode, the laser diode can turn on at a larger inductor current. When the laser diode is initially reverse biased, depletion charge and diffusion charge can be populated before the laser diode will lase. This causes the laser diode to initially turn on at a larger inductor current, which will reduce the rise time, thereby achieving higher power/shorter pulses.
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: July 27, 2021
    Assignee: Analog Devices, Inc.
    Inventors: Shawn S. Kuo, Ronald A. Kapusta, Xu Tang, Leonard Shtargot, Eugene L. Cheung, Jonathan Paolucci
  • Patent number: 11075588
    Abstract: An inverter system is provided that includes switches that alternate between closed and open states to conduct or block conduction, respectively, of electric current through the switches and switch controllers that control operation of the switches between the closed and open states. In a first operating mode, the controllers control operation of the switches to convert direct current into a single, common phase of an alternating current from a same phase output from each of the switches to power a higher-demand load of a powered system with the single phase of the alternating current. In a second operating mode, the controllers control operation of the switches to convert the direct current into multiple, different phases of the alternating current to power a lower-demand load of the powered system with the multiple, different phases of the alternating current. Each of the switches outputs a different phase of the multiple phases.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: July 27, 2021
    Assignee: TRANSPORTATION IP HOLDINGS, LLC
    Inventor: Emil N. Nikolov
  • Patent number: 11070201
    Abstract: An apparatus for permanently controlling an electronic switching unit, the apparatus including a controlling driver unit for supplying a control signal to the electronic switching unit using a charge storage device, and a charging driver unit for recharging the charge storage device.
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: July 20, 2021
    Assignee: Hella GmbH & Co. KGaA
    Inventors: Steffen Bolzenius, Andreas Dick, Michael Loenneker
  • Patent number: 11069621
    Abstract: Provided is a semiconductor device including an input terminal including a P terminal and an N terminal; a laminated circuit substrate connected to the input terminal; a power substrate provided above the laminated circuit substrate; a connecting section electrically connecting the laminated circuit substrate and the power substrate; a capacitor provided in a conduction path between the P terminal and the N terminal; and a resistor provided in series with the capacitor in the conduction path between the P terminal and the N terminal. The capacitor may be provided in a region where the input terminal or the connecting section is provided, in an overhead view.
    Type: Grant
    Filed: June 3, 2019
    Date of Patent: July 20, 2021
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventor: Hayato Nakano
  • Patent number: 11018597
    Abstract: A flyback power converter circuit includes: a transformer; a primary side switch, for controlling a primary winding to convert an input voltage to an output voltage and an internal voltage; a primary side control circuit, which is powered by the internal voltage; the primary side control circuit generates a switching signal according to a feedback signal, to operate the primary side switch; a secondary side control circuit, which generates the feedback signal according the output voltage; and a dummy load circuit, which is coupled to the output voltage, wherein when the output voltage drops to or is lower than a predetermined threshold, the dummy load circuit generates a dummy load current, to determine the feedback signal, so that the internal voltage is not undesirably low. When the output voltage exceeds the predetermined threshold, the dummy load circuit adjusts the dummy load current to zero current.
    Type: Grant
    Filed: February 6, 2020
    Date of Patent: May 25, 2021
    Assignee: RICHTEK TECHNOLOGY CORPORATION
    Inventors: Ta-Yung Yang, Chao-Chi Chen, Chen-Hung Tsai, Chuh-Ching Li
  • Patent number: 11013070
    Abstract: A method for monitoring and controlling IGBT temperature in a power converter of an electrical power system includes generating a plurality of temperature signals from a plurality of switching devices via a plurality of temperature sensors. The method also includes selecting a primary switching device from the plurality of switching devices to estimate a primary temperature thereof. Further, the method includes determining the primary temperature of the primary switching device via a temperature measurement circuit communicatively coupled to the primary switching device. Moreover, the method includes comparing remaining temperature signals (or a function thereof) to the primary temperature via at least one comparator circuit. If one of the remaining temperature signals (or the function thereof) exceeds the primary temperature, the method also includes implementing a control action to address the increased temperature.
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: May 18, 2021
    Assignee: General Electric Company
    Inventors: Robert Gregory Wagoner, Lathom Alexander Louco
  • Patent number: 11011940
    Abstract: A radio frequency power system is provided that includes bias modules, a switch, a matching network, and a control module. The bias modules are configured to generate respectively DC bias voltages. The switch is configured to (i) receive current from the bias modules, and (ii) control flow of the current from the bias modules to generate a radio frequency bias voltage signal. The matching network is configured to (i) receive the radio frequency bias voltage signal, and (ii) based on the radio frequency bias voltage signal, supply at least a portion of a radio frequency output voltage signal to an electrode of a substrate support in a processing chamber. The control module is connected to the switch and configured to control a state of the switch based on the radio frequency output voltage signal to shape a waveform of the radio frequency bias voltage signal.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: May 18, 2021
    Assignee: MKS Instruments, Inc.
    Inventors: Ky Luu, Aaron T. Radomski
  • Patent number: 10994596
    Abstract: A vehicle driving device includes a permanent magnet motor, an inverter that drives the permanent magnet motor, a DC-to-DC converter that is a buck-boost converter and connected to the inverter, and a driving battery that is connected to the DC-to-DC converter. The DC-to-DC converter outputs, to the inverter, (i) a voltage inputted to the DC-to-DC converter of a positive electrode of the driving battery as-is and (ii) a voltage inputted to the DC-to-DC converter of a negative electrode of the driving battery after increasing the voltage in a negative direction.
    Type: Grant
    Filed: December 9, 2019
    Date of Patent: May 4, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Junichi Yukawa
  • Patent number: 10985568
    Abstract: The present invention relates to systems and methods that use separation of time scales to mitigate interaction between unintentional islanding detection schemes and GSFs.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: April 20, 2021
    Assignees: National Technology & Engineering Solutions of Sandia, LLC
    Inventors: Jason C. Neely, Sigifredo Gonzalez, Michael Ropp, Dustin Schutz
  • Patent number: 10965221
    Abstract: A multi-level switched capacitor boost inverter includes a series connection of a two-switched capacitor circuit, a source module and at least one one-switched capacitor circuit. Level-shifted pulse width modulation is used to apply gate pulses to the switches. The multi-level switched capacitor boost inverter uses only three capacitors and a single DC voltage source to generate thirteen voltage levels at load terminals with a voltage gain of three. The capacitors of the two-switched capacitor circuit are self-balancing. Additional one-switched capacitor circuits can be added in series with the inverter. Each additional one-switched capacitor circuit increases the number of levels and increases the gain by one.
    Type: Grant
    Filed: September 1, 2020
    Date of Patent: March 30, 2021
    Assignee: King Abdulaziz University
    Inventors: Hussain Bassi, Muhyaddin Rawa, Saad Mekhilef, Marif Daula Siddique, Noraisyah Binti Mohamed Shah
  • Patent number: 10958157
    Abstract: According to an embodiment, an inspection apparatus inspects an inverter circuit including three pairs of arms. The apparatus includes a current controller and a control signal generator. The current controller generates a control output for controlling a current to be output by the inverter circuit. The control output enables the current to approach a target value of the current. The control signal generator generates a first control signal for controlling ON/OFF of a first arm as one of the three pairs of arms based on the control output, a second control signal for fixing a second arm paired with the first arm, in an OFF-state, and a third control signal for fixing at least part of arms other than the first arm and the second arm in an ON-state.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: March 23, 2021
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Shigen Yasunaka, Shinji Takakura
  • Patent number: 10958068
    Abstract: A DC transmission system transmits AC power generated by a generator to an AC distribution grid and a DC distribution grid using DC power. The DC transmission system includes an AC/DC converter, a DC/DC converter, and a DC/AC converter. The AC/DC converter outputs DC power by converting AC power from the generator. The DC/DC converter boosts a first voltage of the DC power outputted from the AC/DC converter, into a second voltage. The DC/AC converter outputs, to the AC distribution grid, AC power by converting the DC power outputted from the DC/DC converter. When the second voltage changes, the DC/DC converter controls the first voltage in response to the change in the second voltage.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: March 23, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Miwako Tanaka, Toshiyuki Fujii
  • Patent number: 10931207
    Abstract: An inverter circuit (120) is configured so as to perform synchronous rectification by six switching elements (130). The switching element (130) is formed of an unipolar device (SiC MOSFET in this case) using a wideband gap semiconductor. The inverter circuit (120) uses the body diode (131) of SiC MOSFET (130) as a freewheeling diode during synchronous rectification.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: February 23, 2021
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Toshiyuki Maeda, Morimitsu Sekimoto, Hiroshi Hibino
  • Patent number: 10923999
    Abstract: Provided is an active power filter-based modular multilevel converter, relating to the field of power electronics. According to the converter, an active power filter circuit is provided between upper and lower arms of each phase in a modular multilevel converter. The active power filter circuit includes two switch power devices, two submodules, a capacitor, and an inductor. The upper and lower bridge-arms are connected in series by means of two submodules, the two switch power devices are connected in series and then connected in parallel to ends of intermediate submodules which are connected in series, and the capacitor and the inductor are connected in series and then connected in parallel to two ends of the switch power device connected to the lower bridge-arm. The defect of large capacitance of submodule in conventional modular multilevel topology is overcome.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: February 16, 2021
    Assignee: Zhejiang University
    Inventors: Guanlong Jia, Min Chen, Song Tang
  • Patent number: 10917012
    Abstract: In accordance with an embodiment, a method includes driving a predetermined load using a driver circuit according to a drive pattern; supplying power to the driver circuit using a switched-mode power supply (SMPS) configured to be coupled to at least one external component; and verifying functionality of the SMPS while driving the predetermined load. Verifying the functionality includes monitoring at least one operating parameter of the SMPS, where the at least one operating parameter of the SMPS is dependent on the drive pattern and the at least one external component, comparing the at least one operating parameter to at least one expected operating parameter to form a first comparison result, and indicating an error condition based on the first comparison result.
    Type: Grant
    Filed: October 4, 2019
    Date of Patent: February 9, 2021
    Assignee: INFINEON TECHNOLOGIES AG
    Inventors: Christian Heiling, Jens Barrenscheen, Matthias Bogus, Benno Koeppl, Markus Zannoth
  • Patent number: 10908205
    Abstract: A method for determining a switching current of at least one switching element of a converter of a system for inductive power transfer, including determining a phase current of at least one AC phase line of the converter; determining at least one switching time point of the at least one switching element and the phase current value at said switching time point; and determining switching current of the at least one switching element depending on the at least one phase current value.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: February 2, 2021
    Assignee: Bombardier Primove GmbH
    Inventors: Alexander Klingspor, Eric Velte
  • Patent number: 10862390
    Abstract: A structure for controlling a Y-capacitor for reducing common mode noise of an electric power conversion system of an environmentally-friendly vehicle. The structure cooperates with an infotainment system for a vehicle and reduces common mode noise of an electric power conversion system. In particular, the structure includes: a switching element connected to a high-voltage power source coupled to the vehicle and to attenuate noise occurring at the time of PWM control; and an electric power conversion part which receives common mode noise occurring from the power source and controls ON/OFF of the switching elements in order to reduce the received common mode noise.
    Type: Grant
    Filed: October 14, 2019
    Date of Patent: December 8, 2020
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventor: Ho-Tae Chun
  • Patent number: 10840842
    Abstract: The present invention relates to a motor driving device and a method for measuring a phase current in a motor driving device, and specifically relates to a technique of measuring three phase currents of a three-phase brushless motor using a current sensor for measuring the DC bus current in the inverter. The control unit according to the present invention shifts a pulse phase of a PWM pulse such that pulse phases of the three phase PWM pulses in a first PWM cycle of the PWM control differ from those in a second PWM cycle of the PWM control, and measures the three phase currents from the output of the current sensor in these two first and second PWM cycles. The control unit calculates an offset error of the current sensor from these three phase current measurements and learns a correction value used for performing offset correction on the electric-current measurement.
    Type: Grant
    Filed: August 24, 2016
    Date of Patent: November 17, 2020
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Fumiya Iijima, Tomonobu Koseki, Tomishige Yatsugi
  • Patent number: 10833605
    Abstract: Systems and methods for reducing switching losses in an electrical system in an aircraft are provided. In one example implementation, a method can include receiving DC power at an inverter of an electrical power system of an aircraft. The inverter can be a multiphase inverter having at least one bridge circuit for each output phase of the inverter. Each bridge circuit can include a plurality of switching elements. The method can include generating, by one or more control devices, a plurality of duty cycle commands for operation of the plurality of switching elements for each bridge circuit. The method can include operating, by the one or more control devices, the inverter in accordance with the plurality of duty cycle commands to generate a multiphase AC power output from the inverter. The plurality of duty cycle commands can be generated at least in part using a space vector modulation process.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: November 10, 2020
    Assignee: GE AVIATION SYSTEMS LLC
    Inventor: David Andrew Woodburn
  • Patent number: 10833596
    Abstract: A DC to AC inverter includes a plurality of power units. Each power unit has a pair of switches, a DC linking capacitor, AC and DC bus bars, and a monolithic insulating material that encapsulates the switches, capacitor and bus bars. Each switch is sandwiched between one of the AC bars and one of the DC bus bars. The monolithic insulating material exposes external surfaces of at least one the bus bars sandwiching each switch.
    Type: Grant
    Filed: June 10, 2019
    Date of Patent: November 10, 2020
    Assignee: Ford Global Technologies, LLC
    Inventors: Lihua Chen, Fan Wang, Fan Xu, Baoming Ge