Bridge Type Patents (Class 363/17)
  • Patent number: 11368052
    Abstract: Disclosed herein is a bridge rectifier and associated control circuitry collectively forming a “regtifier”, capable of both rectifying an input time varying voltage as well as regulating the rectified output voltage produced. To accomplish this, the gate voltages of transistors of the bridge rectifier that are on during a given phase may be modulated via analog control (to increase the on-resistance of those transistors) or via pulse width modulation (to turn off those transistors prior to the end of the phase). Alternatively or additionally, the transistors of the bridge rectifier that would otherwise be off during a given phase may be turned on to help dissipate excess power and thereby regulate the output voltage. A traditional voltage regulator, such as a low-dropout amplifier, is not used in this design.
    Type: Grant
    Filed: July 16, 2020
    Date of Patent: June 21, 2022
    Assignee: STMicroelectronics Asia Pacific Pte Ltd
    Inventor: Yannick Guedon
  • Patent number: 11356062
    Abstract: An electric circuit according to one embodiment of the present technology includes a target circuit and an auxiliary circuit. The target circuit includes an output portion from which predetermined output power is output, and an application point to which a voltage corresponding to the output power is applied to output the output power. The auxiliary circuit has impedance lower than impedance of the target circuit, and outputs the voltage corresponding to the output power to the application point as an auxiliary voltage.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: June 7, 2022
    Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
    Inventor: Takahiro Naito
  • Patent number: 11349399
    Abstract: The DC-DC converter has a configuration in which a first full-bridge circuit and a second full-bridge circuit are connected via a transformer. A control circuit controls soft switching of each switching element. An inductor current flowing through the transformer or an equivalent inductor equivalent to the transformer at a time of switching of turning on or off each switching element is greater than or equal to a threshold current. When the first full-bridge circuit and the second full-bridge circuit have different output voltages V1 and V2, the control circuit causes the inductor current at start times t4 and t8 of a polarity inversion period to approach the inductor current at end times t5 and t9, the polarity inversion period being a period in which V1 and V2 have reverse polarities. This suppresses an increase in loss resulting from a flow of large current and enables ZVS control.
    Type: Grant
    Filed: April 24, 2019
    Date of Patent: May 31, 2022
    Assignee: DIAMOND & ZEBRA ELECTRIC MFG. CO., LTD.
    Inventors: Shogo Nakahara, Hiroyoshi Nakayama
  • Patent number: 11347252
    Abstract: A power converter includes an input circuit, an output circuit, and a configuration circuit. The input circuit is configured to receive an input voltage or current. The output circuit is electrically isolated from the input circuit and is configured to generate a combined output voltage or a combined output current in response to the input circuit. The output circuit includes a plurality of output stages that are each configured to generate a respective partial output voltage or current. The configuration circuit is coupled to the plurality of output stages to dynamically reconfigure a connection among the plurality of output stages to combine the respective partial output voltages or currents to adjust the combined output voltage, the combined output current, or a combined output impedance of the power converter.
    Type: Grant
    Filed: July 31, 2020
    Date of Patent: May 31, 2022
    Assignee: Facebook Technologies, LLC
    Inventors: Jonathan Robert Peterson, Andrew John Ouderkirk, Maik Andre Scheller, Christopher Yuan-Ting Liao
  • Patent number: 11342834
    Abstract: The present disclosure provides a control method for an AC-DC conversion circuit. The method includes: calculating working information of an AC-DC conversion circuit according to at least one circuit parameter information of an input voltage, an input current, an output voltage, and an output current of the AC-DC conversion circuit; comparing the working information of the AC-DC conversion circuit with a preset working range to obtain an actual switching frequency or an actual switching period of the AC-DC conversion circuit. The AC-DC conversion circuit can meet requirements of Total Harmonic Distortion (THD), Power Factor (PF), efficiency and Electromagnetic Interference (EMI) and the like by adjusting the working information of the AC-DC conversion circuit through the preset working range.
    Type: Grant
    Filed: March 12, 2021
    Date of Patent: May 24, 2022
    Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
    Inventors: Kai Dong, Lin Wang, Shuailin Du, Junhao Ji, Hui Huang
  • Patent number: 11342744
    Abstract: A multi-voltage level direct current grid system and a control protection method, the direct current grid system comprising: at least two direct current buses; at least one direct current transformer, one end of which is connected to a first direct current bus while another end is connected to a second direct current bus or a lead-out wire, which may achieve direct current voltage conversion; and at least one lead-out wire current limiter, one end of the lead-out wire current limiter being connected to the second direct current bus while another end is connected to the lead-out wire; the lead-out wire current limiter comprises a first current-limiting unit, and the first current limiting unit comprises a group of direct current switches, as well as a first bypass switch and a first current-limiting resistor unit that are connected in parallel.
    Type: Grant
    Filed: April 1, 2019
    Date of Patent: May 24, 2022
    Assignees: NR ELECTRIC CO., LTD, NR ENGINEERING CO., LTD
    Inventors: Yeyuan Xie, Haiying Li, Yu Wang, Zhongfeng Zhang, Dongming Cao
  • Patent number: 11336203
    Abstract: A multilevel power converter and method for transforming DC power from a DC source into AC power for an AC load are provided. The converter is composed of a half-bridge inverter, a switching cell, and a controller configured for controlling operation of the half-bridge inverter and the switching cell. The half-bridge inverter and the switching cell are connectable to the DC source and the AC load. The switching cell is composed of first and second pairs of switches forming first and second branches in parallel, first and second capacitors connected in series in a capacitor branch connected between the first and second branches, and a pair of back-to-back connected switches in a third branch, the third branch connected to the capacitor branch and connectable to the AC load.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: May 17, 2022
    Inventors: Mohammad Sharifzadeh, Kamal Al-Haddad
  • Patent number: 11323040
    Abstract: The purpose of the present disclosure is to protect a power circuit of a base station in a wireless communication system, the base station comprising: at least one module for processing a signal; and the power circuit for supplying power to the at least one module. The power circuit comprises a transformer, a rectifier circuit and a smoothing circuit, and the power circuit reduces the ratio of an on-section of the rectifier circuit if a reverse current from the at least one module is detected.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: May 3, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Jeonggyu Park
  • Patent number: 11312245
    Abstract: A vehicle power supply system includes a power storage device, a plurality of devices including a plurality of noise generators, and a power distribution circuit connecting the power storage device and the devices. Each of the noise generators is connected to the power distribution circuit via a noise filter. The noise filter includes a first impedance element and a Y capacitor provided closer to the noise generators than the first impedance element. The first impedance element provided for each of the noise generators is an impedance element having a shape and a material that increase a first system impedance of each of the devices to be higher than a predetermined lower limit impedance at least in an amplitude modulation band.
    Type: Grant
    Filed: March 1, 2021
    Date of Patent: April 26, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Akira Mikami, Shota Fuchigami
  • Patent number: 11300590
    Abstract: A switching system for an electricity meter, an electricity meter with a switch system and a method of switching switch are provided. In order to improve lifetime of the switch the timing of outputting a switching signal is adjusted based on a time difference between previously outputting the switching signal and achieving a predefined switching state.
    Type: Grant
    Filed: November 7, 2018
    Date of Patent: April 12, 2022
    Assignee: Landis+Gyr AG
    Inventor: Timothy James Fawcett
  • Patent number: 11296607
    Abstract: A DC-DC converter comprises at least a first and a second inductive element. Each inductive element comprises a transformer (312, 322), input terminals (314, 324, 315, 325) and output terminals (316, 326, 317, 327). A switching circuit (2) is arranged to supply a first alternating voltage to input terminals (314, 315) of the first inductive element, and a second alternating voltage to input terminals of the second inductive element (31, 32). A rectification circuit (4) is arranged to rectify a first and a second output voltage arising at output terminals (316, 317) of the first and second inductive elements (31, 32), respectively. One of the output terminals of the first inductive element (31) is capacitively coupled to one of the output terminals of the second inductive element (32).
    Type: Grant
    Filed: February 17, 2020
    Date of Patent: April 5, 2022
    Assignee: BRUSA HyPower AG
    Inventor: Michael Leibl
  • Patent number: 11292352
    Abstract: In one aspect, an electric vehicle (EV) charging system includes: a plurality of first converters to receive grid power at a distribution grid voltage and convert the distribution grid voltage to at least one second voltage; at least one high frequency transformer coupled to the plurality of first converters to receive the second voltage and electrically isolate a plurality of second converters. The EV charging system may further include the plurality of second converters coupled to the output of the at least one high frequency transformer to receive and convert the at least one second voltage to a third DC voltage. At least some of the plurality of second converters are to couple to one or more EV charging dispensers to provide the third DC voltage as a charging voltage or a charging current.
    Type: Grant
    Filed: April 30, 2021
    Date of Patent: April 5, 2022
    Assignee: Resilient Power Systems, Inc.
    Inventors: Josh Keister, Lyle T. Keister, Mehdi Abolhassani
  • Patent number: 11296214
    Abstract: A high electron mobility transistor (HEMT) includes a carrier transit layer, a carrier supply layer, a main gate, a control gate, a source electrode and a drain electrode. The carrier transit layer is on a substrate. The carrier supply layer is on the carrier transit layer. The main gate and the control gate are on the carrier supply layer. The source electrode and the drain electrode are at two opposite sides of the main gate and the control gate, wherein the source electrode is electrically connected to the control gate by a metal interconnect. The present invention also provides a method of forming a high electron mobility transistor (HEMT).
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: April 5, 2022
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: Kuo-Hsing Lee, Yi-Chung Sheng, Sheng-Yuan Hsueh, Chih-Kai Kang, Guan-Kai Huang, Chien-Liang Wu
  • Patent number: 11290017
    Abstract: A power converter comprises a primary stage including four switches forming a first H bridge; a control circuit capable of applying a first control signal to the first H bridge; a secondary stage including four switches forming a second H bridge; a control circuit capable of applying a second control signal to the second H bridge; and a power transmission stage coupling the primary stage to the secondary stage, wherein the control circuit of the secondary stage is electrically isolated from the control circuit of the primary stage. During a measurement period of a synchronization phase, the switches of the secondary stage are maintained in a short-circuit configuration while the switches of the primary stage are controlled in switched mode.
    Type: Grant
    Filed: July 26, 2020
    Date of Patent: March 29, 2022
    Assignee: Commissariat à l'Energie Atomique et aux Energies Alternatives
    Inventors: Dominique Bergogne, Pierre Perichon, Léo Sterna
  • Patent number: 11290022
    Abstract: Aspects of bidirectional architectures with partial energy processing in resonant direct current (DC)-to-DC converters are described. In one embodiment, an alternating circuit (AC)-to-DC circuit generates an AC voltage from a DC voltage. A voltage of the AC voltage is transformed into a majority AC voltage of a majority power path and at least one minority AC voltage of the minority power paths. The majority AC voltage is rectified into a majority DC voltage and a minority AC voltage is rectified into a minority DC voltage. The majority power path and the minority power path are combined as a combined DC voltage.
    Type: Grant
    Filed: September 1, 2020
    Date of Patent: March 29, 2022
    Assignee: VIRGINIA TECH INTELLECTUAL PROPERTIES, INC.
    Inventors: Yuliang Cao, Minh Ngo, Ning Yan, Dong Dong, Rolando Burgos
  • Patent number: 11283366
    Abstract: A rectifier arrangement (20) for rectifying an AC voltage into a DC voltage has a first connection (21), a second connection (22), a third connection (23) and a fourth connection (24), which rectifier arrangement (20) has an intermediate circuit (50) with a first line (51), a second line (52) and a node point (53), which node point (53) is connected to the first line (51) via at least one first capacitor (61) and to the second line (52) via at least one second capacitor (62), which first connection (21), second connection (22) and third connection (23) are each connected to a star point (40) via an associated circuit arrangement (31, 32, 33), which fourth connection (24) is likewise connected to the star point (40), and which star point (40) is connected to the node point (53) via a controllable switch (45).
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: March 22, 2022
    Assignee: Dr. Ing. h. c. F Porsche Aktiengesllschaft
    Inventors: Daniel Spesser, Tim Pfizenmaier, Stefan Endres, Christoph Sessler
  • Patent number: 11283361
    Abstract: A wireless power transfer system using a resonant rectifier circuit with capacitor sensing. A wireless power transfer system includes a power receiver resonant circuit and a synchronous rectifier. The power receiver resonant circuit includes an inductor and a capacitor connected in series with the inductor. The synchronous rectifier is configured to identify zero crossings of alternating current flowing through the inductor based on voltage across the capacitor, and control synchronous rectification of the alternating current based on timing of the zero crossings.
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: March 22, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Mustapha El Markhi, Erhan Ozalevli, Tuli Dake, Dingkun Du, Gianpaolo Lisi, Jingwei Xu
  • Patent number: 11277078
    Abstract: A full-bridge inverter based on a unipolar switching scheme includes a first branch and a second branch in parallel between a first DC node and a second node, the first branch including a first higher switch and a first lower switch in series, and the second branch including a second higher switch and a second lower switch in series. A filter circuit includes a first inductor and a second inductor. One pin of the first inductor is coupled with a first branch conductor, and the first branch conductor is coupled between the first higher switch and the first lower switch, and an opposite pin of the first inductor is electrically coupled with a first output node. One pin of the second inductor is coupled with a second branch conductor, the second branch conductor is coupled between the second higher switch and the second lower switch, and an opposite pin of the second inductor is coupled with a second output node of the full-bridge inverter.
    Type: Grant
    Filed: October 26, 2020
    Date of Patent: March 15, 2022
    Assignee: ABB Schweiz AG
    Inventors: Enea Bianda, Tin-Ho Li, Juha Huusari, Ngai-Man Ho
  • Patent number: 11277005
    Abstract: A multi-stage driver system includes a switched mode power circuit for providing a direct current (DC) power signal to an electrical load and a control block. Control block includes interfaces coupled to receive at least one real-time input signal from a high voltage region or a low voltage region of the switched mode power circuit and to provide at least one control signal to the high voltage region or the low voltage region. Control block configures the switched mode power circuit to provide the DC power signal having at least one power parameter within a tolerance of a power configuration setting value of the electrical load. Control block responds to the at least one real-time input signal from the high voltage region or the low voltage region to adjust operation of the high voltage region or the low voltage region via the at least one control signal.
    Type: Grant
    Filed: February 9, 2021
    Date of Patent: March 15, 2022
    Assignee: ABL IP HOLDING LLC
    Inventors: Sean P. White, Gregory Malone, Januk Aggarwal, David P. Ramer
  • Patent number: 11245284
    Abstract: A method and an electronic device for power allocation of multi-parallel power electronic transformers, the method including: determining a quantity of conversion stages of the power electronic transformers; obtaining a load ratio-efficiency relationship between the two ports of each conversion stage in turn, performing a curve fitting to obtain a load ratio-efficiency curve of each conversion stage of the power electronic transformers; calculating a load ratio-loss relationship of each conversion stage, based on the load ratio-efficiency curve of each conversion stage; obtaining a multi-parallel minimum-operation-loss power allocation curve of each conversion stage; performing a piecewise curve fitting of the minimum-operation-loss power allocation curve to obtain a multi-parallel optimum power allocation mathematical model of each stage; and determining an optimum power allocation to each port of the multi-parallel power electronic transformers, based on the multi-parallel optimum power allocation mathemati
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: February 8, 2022
    Assignee: GUANGZHOU INSTITUTE OF ENERGY CONVERSION, CHINESE ACADEMY OF SCIENCES
    Inventors: Lei Huang, Jie Shu, Qiong Cui, Jiyuan Zhang, Hao Wang
  • Patent number: 11245325
    Abstract: A compensation filter and a method for activating a compensation filter are disclosed. In an embodiment a compensation filter includes an operational amplifier, a capacitive element, a first and a second resistive element and a current converter. The compensation filter is configured to attenuate a common mode interference in a critical frequency range.
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: February 8, 2022
    Assignee: TDK ELECTRONICS AG
    Inventor: Yasin Karinca
  • Patent number: 11239747
    Abstract: Current sensing apparatus in power factor correction circuits and related methods are disclosed. An example power factor correction circuit includes a first Gallium Nitride (GaN) transistor having a first current terminal and a second current terminal, a second GaN transistor having a third current terminal and a fourth current terminal, a first diode having a first anode, a second diode having a second anode, the second anode coupled to the first anode, and a resistor having a first terminal and a second terminal, the first terminal coupled to the second current terminal and the fourth current terminal, the second terminal coupled to the first anode and the second anode.
    Type: Grant
    Filed: December 11, 2019
    Date of Patent: February 1, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventor: Serkan Dusmez
  • Patent number: 11233457
    Abstract: The present application provides a power conversion device such that input current and output current can be accurately estimated without providing a special circuit. A DC-DC converter including a control unit and semiconductor switching elements is such that a current detecting current transformer is connected in series between a high voltage battery and the semiconductor switching elements, in addition to which the DC-DC converter includes a current-to-voltage conversion circuit on a secondary side of the current transformer, and the control unit estimates an input current from an AD conversion value input from the current-to-voltage conversion circuit.
    Type: Grant
    Filed: April 24, 2020
    Date of Patent: January 25, 2022
    Assignee: Mitsubishi Electric Corporation
    Inventor: Mao Kawamura
  • Patent number: 11233459
    Abstract: A method includes magnetically coupling a first coil of a wireless power transfer system to a second coil of the wireless power transfer system, wherein the first coil is coupled to a first resonant tank comprising a first variable capacitance network, and the second coil is coupled a second resonant tank comprising a second variable capacitance network, and adjusting a capacitance of at least one of the first variable capacitance network and the second variable capacitance network to regulate an output voltage of the wireless power transfer system.
    Type: Grant
    Filed: June 17, 2020
    Date of Patent: January 25, 2022
    Assignee: Quanten Technologies Limited
    Inventor: Hengchun Mao
  • Patent number: 11223289
    Abstract: A switched mode power supply includes a power circuit and a control circuit coupled to the power circuit for regulating its output voltage. The control circuit is configured to generate a control signal for at least one power switch of the power circuit using a reference voltage, determine if a duty cycle of the control signal is within a defined range, sense one or more output parameters of the power circuit including the output voltage of the power circuit, and in response to determining the duty cycle of the control signal is outside the defined range, adjust the reference voltage to adjust the duty cycle of the control signal. The reference voltage is adjustable over time to thereby linearly adjust the output voltage of the power circuit. Other example switched mode power supplies, control circuits, and methods for regulating output voltages of switched mode power supplies are also disclosed.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: January 11, 2022
    Assignee: Astec International Limited
    Inventors: Lian Liang, Bing Zhang, Mei Qin, Wenyong Liu, Zhishuo Li
  • Patent number: 11218083
    Abstract: Provided is a technique for reducing the size and cost of a semiconductor device. A semiconductor device includes an IGBT module having an IGBT, and a MOSFET module having a MOSFET whose operational property is different from that of the IGBT, the MOSFET module being connected to the IGBT module in parallel. The semiconductor device is capable of selectively executing an operation mode in which switching timing in the IGBT module and switching timing in the MOSFET module are non-identical.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: January 4, 2022
    Assignee: Mitsubishi Electric Corporation
    Inventor: Shinji Sakai
  • Patent number: 11218082
    Abstract: A power supply is provided. The power supply includes: a switching module including switching elements and is configured to receive rectified power; a transformer configured to transform first power received from the switching module; an outputter including first and second switching elements, and is configured to receive the transformed first power from the transformer and output an output voltage that follows a preset reference voltage; and a controller configured to control the switching module to operate in a full bridge mode or a half bridge module based on a peak voltage of the rectified power, adjust a switching frequency of the switching module based on the output voltage, control switching of the first and second switching elements based on the output voltage, and adjust a duty ratio of each of the first and second switching elements based on the rectified power.
    Type: Grant
    Filed: July 16, 2020
    Date of Patent: January 4, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Youngho Choi, Youngsoo Kim, Youngnam Yoon, Sung-Bum Jung, Shinwook Choi
  • Patent number: 11211811
    Abstract: A three-port charger with an inversion function includes a primary side conversion circuit connected with a primary side winding of a transformer, a secondary side first conversion circuit connected with a second winding of the transformer, a secondary side second conversion circuit connected with a third winding of the transformer and a fourth winding of the transformer which are connected in series, and a central control unit used for controlling switches in the primary side conversion circuit, the secondary side first conversion circuit and the secondary side second conversion circuit. The primary side conversion circuit is connected with an external power supply, the secondary side first conversion circuit is connected with a high-voltage battery. The secondary side second conversion circuit is connected with a low-voltage load. The present invention integrates the independent charger and a high-power DCDC module, and shares a power switch, a control circuit and a magnetic core.
    Type: Grant
    Filed: January 29, 2020
    Date of Patent: December 28, 2021
    Assignee: SHENZHEN VMAX NEW ENERGY CO., LTD.
    Inventors: Jun Liu, Yingying Feng, Shun Yao, Jinzhu Xu
  • Patent number: 11208001
    Abstract: A vehicle management system is provided. The system carries out at least one of controlling a supply of power from an onboard power unit in a parked vehicle to the exterior and controlling charging of the onboard power unit from the exterior. The system comprises a control unit for controlling the supply of power or charging between the onboard power unit and the exterior; a transaction managing unit for managing the supply of power or charging between the onboard power unit and the exterior; and a payment point setting unit for setting a payment point for a user associated with the parked vehicle, wherein the payment point setting unit sets the payment point on the basis of transaction information recorded by the transaction managing unit.
    Type: Grant
    Filed: June 18, 2020
    Date of Patent: December 28, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Shinichi Yokoyama, Tomohide Haraguchi, Takashi Sone
  • Patent number: 11201549
    Abstract: A related power conversion circuit includes a three-level switch circuit and a resonant circuit, and a control method of the related power conversion circuit includes: controlling all transistors in the three-level switch circuit to be turned off, where a body diode connected in parallel to a transistor S1, a body diode connected in parallel to a transistor Q1, and a body diode connected in parallel to a transistor Q2 are all turned on based on a current freewheeling function of the resonant circuit; controlling the S1 to be turned on, to set up a first working state of the power conversion circuit; and after the first working state lasts for a time length T1, controlling the Q1 and the Q2 to be turned on.
    Type: Grant
    Filed: July 31, 2020
    Date of Patent: December 14, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Yanzhong Zhang, Chunyang Liu, Zheng Ma
  • Patent number: 11201548
    Abstract: According to a single-stage interleaved software switching converter, power factor is controlled and battery charging and current are integrally controlled on the basis of a PFC circuit of a single-stage interleaving type so that efficiency of a charging device is enhanced and the cost is reduced. Further, it is possible to remove harmful electromagnetic radiation; enhance power density and durability by using a film-type capacitor instead of the conventional electrolytic capacitor; reduce switching loss by soft switching operation and to reduce the volume of a filter unit; design magnetizing current to be small by removing a low-frequency component of a transformer and to reduce the volume; and perform high-power charging according to the number of windings of the transformer.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: December 14, 2021
    Assignee: Foundation for Research and Business, Seoul National University of Science and Technology
    Inventor: Se Wan Choi
  • Patent number: 11192507
    Abstract: A transient increase or decrease of power supplied to a reconfiguration circuit to be a logic circuit whose circuit configuration can be changed is reduced. An autonomous traveling control ECU 201 has a reconfiguration circuit 209, a main power supply circuit 211, an auxiliary current source circuit 213, and a function control unit 207. The reconfiguration circuit 209 is a reconfigurable logic circuit. The main power supply circuit 211 supplies a power supply voltage to the reconfiguration circuit 209. The auxiliary current source circuit 213 increases or decreases a current supplied from the main power supply circuit 211 to the reconfiguration circuit 209. The function control unit 207 determines an operation mode of the reconfiguration circuit 209 on the basis of a mode determination signal input from the outside and indicating a traveling mode of a vehicle, and controls a reconfiguration of the reconfiguration circuit 209 on the basis of a determination result.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: December 7, 2021
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Hiroshi Shinoda, Tomohiko Yano, Hideyuki Sakamoto
  • Patent number: 11190104
    Abstract: A DC/DC converter includes a first capacitor and a second capacitor coupled to a first node, a first switch and a second switch coupled between the first node and a second node, a third switch and a fourth switch coupled between the first node and a third node, a first passive network coupled between a fourth node and a fifth node, the first passive network connecting the fourth node and the fifth node in series to a primary winding of a transformer, and a secondary side circuit coupled to a secondary winding of the transformer; a control method of the DC/DC converter includes: adjusting a phase shift angle between control signals of the first switch and the fourth switch to reduce a voltage difference between the first capacitor and the second capacitor.
    Type: Grant
    Filed: January 10, 2020
    Date of Patent: November 30, 2021
    Assignee: Delta Electronics (Shanghai) CO., LTD
    Inventors: Wenfei Hu, Cheng Lu
  • Patent number: 11181404
    Abstract: A magnetic flowmeter includes a flow tube assembly, an electromotive force (EMF) sensor, a power amplifier, a current sampling circuit, and a controller. The flow tube assembly receives the fluid flow, and includes a coil configured to receive a coil current and induce an EMF in the fluid flow that is proportional to the flow rate. The EMF sensor generates an output indicating the induced EMF. The power amplifier is configured to generate unfiltered current pulses at a first frequency. The power amplifier includes a low pass filter that attenuates the unfiltered current pulses to form coil current pulses at a second frequency that form the coil current. The current sampling circuit samples the coil current pulses at a sampling frequency. The controller is configured to change a relationship between the sampling frequency and the first frequency, and adjust the coil current based on the samples.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: November 23, 2021
    Assignee: MICRO MOTION, INC.
    Inventors: Masoud Ameri, Scot Ronald Foss, Jared James Dreier
  • Patent number: 11171568
    Abstract: Some embodiments may include a nanosecond pulser comprising a plurality of solid state switches; a transformer having a stray inductance, Ls, a stray capacitance, Cs, and a turn ratio n; and a resistor with a resistance, R, in series between the transformer and the switches. In some embodiments, the resonant circuit produces a Q factor according to Q = 1 R ? L s C s ; and the nanosecond pulser produces an output voltage Vout from an input voltage Vin, according to Vout=QnVin.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: November 9, 2021
    Assignee: Eagle Harbor Technologies, Inc.
    Inventors: Kenneth E. Miller, James R. Prager, Timothy M. Ziemba, John G. Carscadden, Ilia Slobodov, Alex Patrick Henson
  • Patent number: 11171574
    Abstract: To provide a power conversion device capable of estimating a load voltage with high accuracy without directly detecting the load voltage to be applied to a load, a control circuit includes an estimator for estimating the load voltage to be applied to the load based on an electric current of a resonant circuit, an AC frequency of an inverter and an electrostatic capacitance of the load, or an estimator for estimating the load voltage based on the electric current of the resonant circuit, the AC frequency of the inverter, an inductance of a resonant coil and a correction coefficient previously set from a relationship between a voltage of the resonant coil and the load voltage, and which controls an output to a target load voltage based on the estimated load voltage.
    Type: Grant
    Filed: April 2, 2018
    Date of Patent: November 9, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Ryota Asakura, Tomokazu Sakashita, Takahiro Inoue
  • Patent number: 11158451
    Abstract: A power module comprises a first circuit board assembly and a magnetic core assembly. The first circuit board assembly comprises a first printed circuit board and at least two switch circuits disposed on the first printed circuit board. The magnetic core assembly is disposed near the first printed circuit board and comprises a magnetic core portion and at least a pair of first electrical conductors. The magnetic core portion comprises at least a core unit, the core unit comprises a pair of holes and a second magnetic overlapping region, and the pair of holes are separated by the second magnetic overlapping region. Each pair of the first electrical conductors is penetrated through the corresponding pair of holes of the magnetic core portion to define two output inductors. Each of the switch circuits is electrically connected with the corresponding output inductor to define a phase circuit of the power module.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: October 26, 2021
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Yahong Xiong, Da Jin, Qinghua Su
  • Patent number: 11152849
    Abstract: A soft-switching, high-performance single-phase alternating current (AC)-direct current (DC) converter is provided. The AC-DC converter described herein provides a new circuit topology for single-stage, single-phase or multi-phase AC-DC power conversion with power factor correction (PFC) and galvanic isolation using a high-frequency isolation transformer. The AC-DC converter improves power conversion efficiency and power density—two of the most important metrics for a power converter. It achieves soft switching for high frequency switches in the circuit, leading to higher efficiency and lower electromagnetic interference (EMI).
    Type: Grant
    Filed: June 5, 2020
    Date of Patent: October 19, 2021
    Assignee: Arizona Board of Regents on behalf of Arizona State University
    Inventor: Rajapandian Ayyanar
  • Patent number: 11146108
    Abstract: A device comprises a first current sense apparatus coupled to a first switching element of a power conversion apparatus, a second current sense apparatus coupled to a second switching element of the power conversion apparatus and a current sense processing apparatus configured to receive detected current signals from the first current sense apparatus and the second current sense apparatus, and generate an average current signal and a peak current signal.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: October 12, 2021
    Assignee: NuVolta Technologies (Hefei) Co., Ltd.
    Inventors: Sichao Liu, Junxiao Chen, Gang Dai
  • Patent number: 11146199
    Abstract: A motor control method includes providing a motor comprising a plurality of windings, a rotor and a stator magnetically coupled to the rotor, coupling a plurality of power converters to the plurality of windings, configuring the plurality of power converters to operate in a first interleaving mode, controlling the plurality of power converters to dynamically adjust the number of poles of the motor and after the step of controlling the plurality of power converters to dynamically adjust the number of poles of the motor, configuring the plurality of power converters to leave the first interleaving mode and enter into a second interleaving mode.
    Type: Grant
    Filed: May 17, 2019
    Date of Patent: October 12, 2021
    Assignee: Quanten Technologies, Inc.
    Inventor: Hengchun Mao
  • Patent number: 11146164
    Abstract: The disclosure relates to a devices, systems and methods implementing a single transformer-based gate driver. In one embodiment, single transformer-based gate driver includes an RF source; a PWM controller; an edge detector and pulse generating circuit operably connected to the RF source and PWM controller; a transformer comprising a primary side and a secondary side, the primary side of the transformer operably connected to an output of the edge detector and pulse generating circuit, the secondary side of the transformer operably connected to a rectifier circuit and a signal recovery circuit; and a drive circuit operably connected to the rectifier circuit and the signal recovery circuit.
    Type: Grant
    Filed: January 21, 2021
    Date of Patent: October 12, 2021
    Assignee: The Florida State University Research Foundation, Inc.
    Inventors: Fang Peng, Hui Li
  • Patent number: 11146177
    Abstract: Systems and method for optimizing the efficiency of operation of electronic circuits, configured structured according to a true soft-switching phase-shifted full-bridge topology (where all the primary switching elements turn on at zero voltage and the secondary switching elements turn off at zero current with no ringing and no spikes across the secondary switching elements) with the use of unique current-injection approaches. An additional advantage of the embodiments of this invention is that the true soft switching feature applies regardless of the leakage inductance in the transformer.
    Type: Grant
    Filed: May 9, 2019
    Date of Patent: October 12, 2021
    Inventor: Ionel Jitaru
  • Patent number: 11139762
    Abstract: A motor control device includes: a voltage boosting circuit that boosts a power source voltage supplied from an outside; a condenser that smooths a voltage output by the voltage boosting circuit; an inverter circuit that generates a drive voltage of a motor by switching a voltage output by the voltage boosting circuit and smoothed by the condenser; and a control part that causes the voltage boosting circuit to bypass and causes the power source voltage to be supplied to the inverter circuit, and a distance between the voltage boosting circuit and the inverter circuit is a distance with which a parasitic inductance is equal to or less than a predetermined value.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: October 5, 2021
    Assignee: NIDEC TOSOK CORPORATION
    Inventors: Tadayuki Hatsuda, Yoshihisa Okuhata
  • Patent number: 11135922
    Abstract: A system includes a rotary electric machine, wiring, a battery that is connected to the rotary electric machine by the wiring, and an upper limit value setting section which sets an output upper limit value that is an upper limit of an output command for the rotary electric machine. A control apparatus which controls the rotary electric machine is provided with a temperature acquisition section which acquires the temperature of at least one of the battery and the wiring, an allowable output value calculation section which calculates an allowable output value that is the upper limit allowed for the output command of the rotary electric machine, based on the temperature that is acquired by the temperature acquisition section, and a transmitting section which transmits the allowable output value calculated by the allowable value calculation section to the upper limit value setting section.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: October 5, 2021
    Assignee: DENSO CORPORATION
    Inventors: Shinsuke Kawazu, Akira Kato, Takashi Senda
  • Patent number: 11128226
    Abstract: Provided is a power conversion device including: an isolation transformer (107) including a first winding and a second winding; switching elements (101 to 104) to be connected to the first winding of the isolation transformer (107); a first conductor (105) configured to connect one end of the first winding of the isolation transformer (107) to the switching elements (101 and 102); and a second conductor (106) configured to connect another end of the first winding of the isolation transformer (107) to the switching elements (103 and 104), the first conductor (105) and the second conductor (106) being arranged on an insulating substrate (301) so as to be parallel to each other so that the first conductor (105) and the second conductor (106) are prevented from overlapping each other.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: September 21, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventor: Naoya Yabuuchi
  • Patent number: 11128221
    Abstract: A DC-DC converter includes a transformer having primary and secondary windings, a power oscillator applying an oscillating signal to the primary winding to transmit a power signal to the secondary winding, a rectifier obtaining an output DC voltage by rectifying the power signal at the secondary winding, and comparison circuitry generating an error signal representing a difference between the output DC voltage and a reference voltage value. A transmitter connected to the secondary winding performs an amplitude modulation of the power signal at the secondary winding to transmit an amplitude modulated power signal to the primary winding, the amplitude modulation based upon the error signal and modulating a stream of data to the primary winding. A receiver coupled to the primary winding demodulates the amplitude modulated power signal to recover the error signal and the stream of data. An amplitude of the oscillating signal is controlled by the error signal.
    Type: Grant
    Filed: January 21, 2020
    Date of Patent: September 21, 2021
    Assignee: STMicroelectronics S.r.l.
    Inventors: Alessandro Parisi, Nunzio Greco, Nunzio Spina, Egidio Ragonese, Giuseppe Palmisano
  • Patent number: 11128236
    Abstract: A multi-winding single-stage multi-input boost type high-frequency link's inverter with simultaneous/time-sharing power supplies, having the circuit structure formed by connecting a plurality of mutually isolated high-frequency inverter circuits having an input filter and an energy storage inductor, a common output cycloconverter and filter circuit by a multi-input single-output high-frequency transformer. Each input end of the multi-input single-output high-frequency transformer is connected in one-to-one correspondence to the output end of each high-frequency inverter circuit. The output end of the multi-input single-output high-frequency transformer is connected to the input end of the output cycloconverter and filter circuit. The inverter has the following characteristics: multiple input sources are connected to a common ground or a non-common ground. The multiple input sources supply power to load in a simultaneous/time-sharing manner. The output and input high-frequency isolation is performed.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: September 21, 2021
    Assignee: QINGDAO UNIVERSITY
    Inventors: Daolian Chen, Yanhui Qiu
  • Patent number: 11117476
    Abstract: The present disclosure relates to the field of power electronics and provides a power generating system and method for a vehicle. The present disclosure provides an alternative system for charging an energy storage device that is used to drive a vehicle and also to reduce dependency of the vehicle on the energy storage device.
    Type: Grant
    Filed: September 17, 2016
    Date of Patent: September 14, 2021
    Inventor: Hemant Karamchand Rohera
  • Patent number: 11121631
    Abstract: ADC-to-DC converter which is configured to provide a main DC supply and an auxiliary DC supply from a single energy source such as a fuel cell. The main supply voltage may be greater than the voltage provided by the energy source, and the auxiliary supply voltage may be less than the voltage provided by the energy source. In some embodiments boost and buck conversion are provided by a single switching bridge, such as an inverter. Such an inverter may comprise three-legs connected between a main output voltage and a reference or ground voltage. Each leg of such an inverter may comprise two switches connected in series. These legs may share a common DC voltage link, for example a common ground and positive rail.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: September 14, 2021
    Assignee: Sevcon Limited
    Inventor: Peter Barrass
  • Patent number: 11095219
    Abstract: A DC-DC converter has a configuration in which a first full-bridge circuit and a second full-bridge circuit are connected via a transformer and an inductor. A control circuit switches between first control for changing the phases of switching elements in the first bridge circuit and switching elements in the second bridge circuit and second control for changing the switching frequencies (drive angular frequencies) of the switching elements, in accordance with target power, so that an inductor current flowing during a dead time of the switching elements becomes larger than or equal to a threshold current. The inductor current in the first control is larger than the inductor current in the second control.
    Type: Grant
    Filed: August 22, 2018
    Date of Patent: August 17, 2021
    Assignee: DIAMOND ELECTRIC MFG. CO., LTD.
    Inventors: Masao Watanabe, Shogo Nakahara