In Transistor Inverter Systems Patents (Class 363/131)
  • 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: 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: 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
    Inventors: Ta-Yung Yang, Chao-Chi Chen, Chen-Hung Tsai, Chuh-Ching Li
  • 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: 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: 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
    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
    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
    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
    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
    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
    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
    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
    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
  • Patent number: 10811868
    Abstract: The purpose of the present invention is an electrical system allowing conversion of a direct voltage into another direct voltage, including: a resonant DC-DC converter including an LLC converter circuit, a control unit including: a first module for determining the rms resonance current value from a measurement of the output current, a second module for determining a maximum value of the voltage at the terminals of each resonance capacitor and a minimum value of the voltage at the terminals of each resonance capacitor using rms resonance current value, a comparison module, a disconnection element configured to stop operation of the resonant DC-DC converter in the event of an overload.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: October 20, 2020
    Assignee: Valeo Siemens eAutomotive France SAS
    Inventors: Huan Zhou, Gang Yang
  • Patent number: 10790743
    Abstract: A module for connecting to a second module of the same type to provide an electrical converter system or, a battery system, wherein the module comprises an energy storage, at least five internal switching elements, and at least two connections on each side of the module, wherein the energy storage is connected directly to at least one of the at least two connections and the internal switching elements are arranged and connected in such a way that the internal switching elements, independently of a switching state of corresponding internal switching elements of the second module of the same type, can realize all switching states in order to dynamically switch an electrical connection between the energy storage and a corresponding energy storage of the second module. The invention further relates to an electrical converter system and to a battery system.
    Type: Grant
    Filed: April 4, 2016
    Date of Patent: September 29, 2020
    Assignee: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
    Inventor: Stefan Götz
  • Patent number: 10784784
    Abstract: A power supply includes a controller integrated circuit that controls a switching operation of a primary switch based on a feedback voltage indicative of an output voltage of the power supply. The controller integrated circuit starts the switching of the primary switch when the feedback voltage reaches a first threshold voltage and stops the switching of the primary switch when the feedback voltage reaches a second threshold voltage. The controller integrated circuit adjusts the feedback voltage relative to the first threshold voltage to reduce the delay time to start switching the primary switch to increase the output voltage in response to changing load conditions.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: September 22, 2020
    Inventors: Bonggeun Chung, Taesung Kim, Gwanbon Koo
  • Patent number: 10777542
    Abstract: A semiconductor device according to the present invention incudes a semiconductor chip, a conductive member for supporting the semiconductor chip, a joint material provided between the conductive member and the semiconductor chip, and a release groove formed on the surface of the conductive member and arranged away from the semiconductor chip with the one end and the other end of the release groove connected to the peripheral edges of the conductive member, respectively.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: September 15, 2020
    Assignee: ROHM CO., LTD.
    Inventors: Kenji Hayashi, Akihiro Suzaki
  • Patent number: 10763668
    Abstract: A converter is provided. The converter is capable of generating a loading current at an output node. The converter includes a high efficiency power channel and a fast transient response channel. The high efficiency power channel and the fast transient response channel share an inductor that is coupled to the output node. The high efficiency power channel has an additional inductor that is connected in series with the inductor coupled to the output node.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: September 1, 2020
    Assignee: MediaTek Inc.
    Inventors: Hua-Chiang Huang, Chih-Chen Li
  • Patent number: 10756718
    Abstract: A gate driving apparatus for a power semiconductor device may include: a first off-resistor and a second off-resistor each having a first end connected to a gate of the power semiconductor device; a first off-switch configured to determine a connection state between a second end of the first off-resistor and a ground based on a gate driving signal for determining an on/off state of the power semiconductor device; a second off-switch configured to determine a connection state between a second end of the second off-resistor and the ground; an electric current detector configured to detect an electric current flowing from a collector (drain) of the power semiconductor device to an emitter (source) of the power semiconductor device; and a controller configured to determine an open/closed state of the second off-switch based on the gate driving signal and a magnitude of the electric current detected by the electric current detector.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: August 25, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Ki Jong Lee, Ji Woong Jang, Kang Ho Jeong, Sang Cheol Shin, Han Geun Jang
  • Patent number: 10749446
    Abstract: A virtual synchronous generator device disclosed. The device includes an inverter and inverter controller having a power control portion, a power reserve portion, a power point tracking control portion, and a virtual inertia control portion. The power reserve portion determines an amount of power to be reserved and sends a signal, indicative of the determined amount of power to the power point tracking controller. The power point tracking controller determines a power point that is less than a MPP, and provides a signal to the power control portion indicative of the determined power point. The inertia control portion determines a virtual inertia and provides a signal indicative of the virtual inertia to the power control portion. The power control portion provides a power control signal to the inverter based on the power point tracking signal and the inertia command signal.
    Type: Grant
    Filed: January 2, 2019
    Date of Patent: August 18, 2020
    Assignee: General Electric Company
    Inventor: Maozhong Gong
  • Patent number: 10746802
    Abstract: A system and a method in which a contactor coil control unit, which applies an operation signal to a contactor coil (relay coil) that opens or connects contact points of a contactor (Relay), during a travelling of a vehicle applies an abnormal signal to the contactor coil by an external reason or a failure, the abnormal signal is detected in real time, so that it is possible to prevent the contact point of the contactor from being unintentionally opened by the abnormal signal, and it is possible to prevent an operating vehicle from being suddenly stopped by determining whether the vehicle actually travels based on a maintenance time of the abnormal signal and whether the abnormal signal is applied due to an actual failure of the contactor coil control unit.
    Type: Grant
    Filed: January 24, 2017
    Date of Patent: August 18, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Hyunki Cho, Sang Hoon Lee, Jaedong Park, Chang Hyun Sung
  • Patent number: 10743385
    Abstract: Various embodiments include a voltage adjusting block (VAB) coupled to a light emitting diode (LED) string. The VAB includes a first switch having a first lead connected to a voltage input, and having a second lead, the first switch having a controllable duty cycle, a first diode having a cathode connected to the second lead of the first switch, and having an anode, a first inductor having a first lead connected to the cathode of the first diode, and having a second lead, and a first capacitor having a first lead connected to the anode of the first diode and having a second lead connected to the second lead of the first inductor. The VAB may provide a variable voltage across the anode of the first diode and the second lead of the first capacitor dependent upon a number of LEDs in the LED string being turned on.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: August 11, 2020
    Assignee: OSRAM SYLVANIA Inc.
    Inventor: Alireza Safaee
  • Patent number: 10734840
    Abstract: A transmitter device is configured to transfer energy to multiple receiver devices. The transmitter device includes multiple transmitter coils, and a shared power converter is coupled to each transmitter coil. The shared power converter includes a leading half bridge and multiple trailing half bridges. Each transmitter coil is coupled between the leading half bridge and a respective one of the trailing half bridges. The shared power converter is dynamically configurable in that the leading half bridge may be coupled to multiple trailing half bridges when energy is to be transferred wirelessly to two or more receiver devices. The leading half bridge simultaneously operates with each trailing half bridge as an independent full-bridge phase shift inverter. A signal supplied to each transmitter coil is independently regulated by controlling a phase shift of a respective trailing half bridge with respect to the leading half bridge.
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: August 4, 2020
    Assignee: APPLE INC.
    Inventors: Weihong Qiu, Zaki Moussaoui, Rohan Dayal
  • Patent number: 10720851
    Abstract: A printed circuit board (PCB) power cell (100) for arranging in a multi-cell power supply (500) includes a housing assembly (102) with a multiple section housing (104, 106), and a PCB assembly (120) positioned within the housing assembly (102), wherein the housing assembly (102) and the PCB assembly (120) are configured to provide an integrated voltage isolation of the power cell (100) which supports an output voltage of the multi-cell power supply (500). Furthermore, a multi-cell power supply (500) including a PCB power cell (100) with isolation is described.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: July 21, 2020
    Assignee: Siemens Aktiengesellschaft
    Inventors: Abdelnassir Abdalla, John B. Balicki, Jr., Edward Alan Cheesman, Liviu Mihalache, Edward A. Novack, Mukul Rastogi
  • Patent number: 10720845
    Abstract: The power supply apparatus includes a control unit configured to perform control of gradually changing a turn-on duty of a first switching element when a first voltage mode is switched to a second voltage mode or when the second voltage mode is switched to the first voltage mode.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: July 21, 2020
    Inventors: Yasuhiro Shimura, Hiroki Asano
  • Patent number: 10715047
    Abstract: A resonant power conversion device includes a primary side circuit, a frequency detecting circuit, a resonant converting circuit, a secondary side circuit, a secondary detecting circuit, and a control circuit. The primary side circuit receives, according to a control signal having a primary frequency, an input power to output a primary side power. The frequency of the primary side power corresponds to the primary frequency. The frequency detecting circuit detects and converts the primary frequency into a corresponding potential. The resonant converting circuit electrically couples the primary side power to output a resonant power. The secondary side circuit converts the resonant power into a secondary side power. The secondary detecting circuit detects the secondary side power and correspondingly generates a voltage signal. The control circuit outputs the control signal according to the voltage signal, and doesn't output the control signal when the corresponding potential is higher than a predetermined level.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: July 14, 2020
    Inventor: Huan-Chih Chiu
  • Patent number: 10707774
    Abstract: A system and method is provided for controlling conversion of a received DC voltage (Vdc) into an AC inverter voltage. The method includes determining a reference Vpor (Vpor_REF) based on measured or estimated Vdc such that Vpor_REF is feasible at all values of Vdc for regulating a modulation index signal M_abc at a selectable frequency ? as a function of a measured or estimated voltage at the point of reference (Vpor), wherein M_abc is regulated by Vpor_REF to regulate the inverter hardware circuit to output the AC inverter voltage in order for Vpor to satisfy a requirement appropriate for the load.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: July 7, 2020
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Michael C. Harke, Vlatko Miskovic
  • Patent number: 10707144
    Abstract: A method of creating thermal boundaries in a substrate is provided. The method includes forming the substrate with first and second sections to be in direct thermal communication with first and second thermal elements, respectively, machining, in the substrate, first and second cavities for defining a third section of the substrate between the first and second sections and disposing a material having a characteristic thermal conductivity that is substantially less than that of the ceramic in the first and second cavities.
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: July 7, 2020
    Inventor: Thomas P. Sprafke
  • Patent number: 10701842
    Abstract: An object of the invention is to provide a power converter that can be reduced in size. To achieve this, a power converter according to the invention includes: water passages arranged radially from an assumed central axis, each being trapezoid-shaped in cross section; and power modules placed between the water passages such that each of the power modules is sandwiched from both surfaces thereof by the water passages. Each of the power modules has an output terminal and positive and negative terminals on an end face located in a centrifugal direction side with respect to the assumed central axis. Any of the power modules and an adjacent one of the power modules are set in a front-back inverted manner.
    Type: Grant
    Filed: May 27, 2015
    Date of Patent: June 30, 2020
    Assignee: Hitachi, Ltd.
    Inventors: Eiichi Ide, Akitoyo Konno, Shinji Sugimoto
  • Patent number: 10686380
    Abstract: An apparatus for power conversion comprises a voltage transformation element, a regulating element, and a controller; wherein, a period of the voltage transformation element is equal to a product of a coefficient and a period of the regulating circuit, and wherein the coefficient is selected from a group consisting of a positive integer and a reciprocal of said integer.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: June 16, 2020
    Assignee: pSemi Corporation
    Inventor: David M. Giuliano
  • Patent number: 10673317
    Abstract: A soft-switching and low input current ripple inverter circuit is disclosed. It includes two paralleled dual-switch forward inverter circuits with a single transformer, two clamping diodes, and one coupling capacitor. It has voltage-clamping function on the switches with a lossless snubber at the turn-off instant and provides enough leakage energy to achieve zero-voltage switching operation with low input current ripple feature. Two set of the driver signals with 180 phase shift each other are used to control the switches of said first and second dual-switch forward inverters, respectively. Each set of driver signals includes one PWM signal (D) and one near 50% duty cycle driver signal. Employing the proposed inverter circuit, the switch's turn-on voltage can be reduced to half input voltage compared to its prior art circuits. Consequently, the switching losses are thus reduced and efficiency is improved, especially in light-load operation.
    Type: Grant
    Filed: June 5, 2019
    Date of Patent: June 2, 2020
    Inventor: Ching-Shan Leu
  • Patent number: 10670022
    Abstract: A solar powered pump that maximizes available energy usage under variable insolation conditions is disclosed. It also permits the integration of parameters such as minimum flow control, set point operation, etc., without the use of additional sensors, thereby reducing the overall cost of the system. It comprises a solar array or other intermittent power source, a motor drive system that provides the power to an electric motor through a variable output power module and a flow loop comprising a pump coupled to the motor, valves and one or more sensors for flow control. The variable output power module uses data from at least one of the sensors to maximize power utilization by maximizing the flow rate in the fluid circuit/loop.
    Type: Grant
    Filed: May 4, 2017
    Date of Patent: June 2, 2020
    Inventor: Sanjay K Roy
  • Patent number: 10673323
    Abstract: A full bridge LLC resonant converter can include: a full bridge circuit including a first input node and a second input node; a LLC resonant tank circuit connected to the first input node and the second input node; a transformer winding part connected to the LLC resonant tank circuit; a rectifier circuit connected to the transformer through a first output node and a second output node; and a capacitor connected between the first input node and the first output node. The LLC resonant tank circuit can include a resonant capacitor connected to the first input node, a resonant inductor connected to the resonant capacitor, and a magnetizing inductance connected between the resonant inductor and the second input node.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: June 2, 2020
    Inventors: Shuo Wang, Huan Zhang
  • Patent number: 10666149
    Abstract: The present application provides a control circuit of a switching power supply, the control circuit comprising: a central control circuit which has a first control port, a second control port, and a third control port; and a current selection circuit which is disposed between the third control port and a ground and has two or more selection terminals, a connection state between the selection terminals being switched between different connection states to adjust the output current value of the switching power supply, wherein the different connection states include disconnection, shorting, and connection with a resistor having a predetermined resistance value. According to the present application, the output current value of the switching power supply is adjusted by switching the connection state between the selection terminals between the states of disconnection, shorting, and connection with a resistor having a predetermined resistance value.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: May 26, 2020
    Assignee: TRIDONIC GMBH & CO KG
    Inventors: Egbert Mao, Scotty Zhong, Gary Chen, Steven Chen, David Wang, Daniel Wang
  • Patent number: 10661677
    Abstract: An example vehicle electrical power system includes a battery operable to power a load of a vehicle over a direct current (DC) bus, a multiphase alternating current (AC) machine comprising a plurality of windings, and a power converter. The power converter includes a plurality of power switches and a controller. The controller is configured to, in a first mode, operate the power converter as an active rectifier that provides current to the DC bus to supply DC loads, and charge the battery from the current on the DC bus; and in a second mode, operate the power converter as a boost converter that converts a variable output voltage of the battery to a constant voltage on the DC bus. The power converter utilizes the plurality of windings when operated as an active rectifier and boost converter. A method of operating a vehicle electrical power system is also disclosed.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: May 26, 2020
    Inventors: Gregory I. Rozman, Steven J. Moss
  • Patent number: 10651748
    Abstract: Electronic circuitry and method of operating the same to shape and reduce the circulating current through the active clamp in a flyback converter and to harvest most of the leakage inductance energy to provide the bias power. Methodologies for minimizing the circulating energy in the clamp circuit in order to improve efficiency of operation of the same. A method for using a portion of the leakage inductance energy in order to create zero voltage switching conditions at the main primary switch.
    Type: Grant
    Filed: October 11, 2018
    Date of Patent: May 12, 2020
    Assignee: Rompower Technology Holdings, LLC
    Inventor: Ionel Jitaru
  • Patent number: 10651746
    Abstract: A converter includes a transformer, a main switch, an active clamping circuit, a synchronous rectifying switch and a processing circuit. The transformer includes a primary winding and a secondary winding. The main switch is coupled to the primary winding. The active clamping circuit clamps the voltage across the main switch when it is OFF. The active clamping circuit includes an auxiliary switch. The synchronous rectifying switch is coupled to the secondary winding. The processing circuit determines whether the rectifying switch is in a main conducting period or a sub conducting period according to a first voltage signal across the rectifying switch and at least one detecting signal from the converter, and generates a driving signal to control the synchronous rectifying switch accordingly.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: May 12, 2020
    Inventors: Hai-Bin Song, Dao-Fei Xu, Jian Zhou, Le-Yang Yang, Qi Fu, Jin-Fa Zhang
  • Patent number: 10651677
    Abstract: A charging system and charging method for a terminal (2), and a power adapter (1) and a switch power source. The switch power source comprises a first rectification unit (101), a switch unit (102), a transformer (103), a second rectification unit (104), a sampling unit (106) and a control unit (107), wherein the control unit (107) outputs a control signal to the switch unit (102) and adjusts a voltage of a first pulse waveform according to a voltage sampling value and/or a current sampling value sampled by the sampling unit (106) to obtain a primary sampling voltage, and adjusts a duty ratio of the control signal according to the primary sampling voltage, the voltage sampling value and/or the current sampling value, so that a voltage of a third pulse waveform satisfies a charging requirement. The switch power source can make an output voltage and current waveform change along with an input voltage and current waveform, so that a good power factor can be obtained.
    Type: Grant
    Filed: January 7, 2017
    Date of Patent: May 12, 2020
    Inventors: Shebiao Chen, Jialiang Zhang
  • Patent number: 10644610
    Abstract: A first wire (WP1, WN1, WC1) is provided between a first converter unit (U1) and a DC bus line (PL4, NL4, CL4). A second wire (WP2, WN2, WC2) is provided between a second converter unit (U2) and a DC bus line (PL4, NL4, CL4). A third wire (WP3, WN3, WC3) is provided between a third converter unit (U3) and a DC bus line (PL4, NL4, CL4). A first fuse (FP1, FN1, FC1) is inserted in each of the first wire (WP1, WN1, WC1). A second fuse (FP2, FN2, FC2) is inserted in each of the second wire (WP2, WN2, WC2). A third fuse (FP3, FN3, FC3) is inserted in each of the third wire (WP3, WN3, WC3).
    Type: Grant
    Filed: November 17, 2016
    Date of Patent: May 5, 2020
    Inventors: Kazuki Nishimura, Toshihide Nakano
  • Patent number: 10637243
    Abstract: A method and system of controlling a power converter operatively coupled with an electric grid, includes: operating the power converter in a direct power control mode with a dynamic switching table, the dynamic switching table including a group of converter space vectors and switching rules associated with the grid voltage and the dc-link voltage of the power converter; detecting abnormalities in the grid voltage and/or the converter dc-link voltage due to a grid fault event relative to their nominal operating conditions; determining a group of crossover angles for a group of converter vectors including the nearest three vectors to a grid voltage vector location inside a hexagonal space vector diagram; dynamically selecting a proper vector based on algorithmic feedforward of the group of crossover angles to dynamically construct the dynamic switching table; and controlling an output power of the power converter.
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: April 28, 2020
    Assignee: Emirates Steel Industries PJSC
    Inventors: Hany Abdelmonem Hamed Ahmed, Ahmed Fathi Ahmed Abdou, Elwy Eissa Ahmed Elkholy, Mohammed Shawki Moursi, Samrat Sumsher Acharya
  • Patent number: 10629380
    Abstract: The capacitor module includes a capacitor, a relay substrate, a first connection terminal member, and a second connection terminal member. The capacitor includes a capacitor body, a first lead wire, and a second lead wire. The first lead wire and the second lead wire are drawn out from the capacitor body. The relay substrate includes a first conductive pattern and a second conductive pattern. The first conductive pattern is electrically connected with the first lead wire. And the second conductive pattern is electrically connected with the second lead wire. The first connection terminal member is electrically connected to the first conductive pattern. The first connection terminal member includes a first terminal part configured to be electrically connected to an external connector. The second connection terminal member is electrically connected to the second conductive pattern.
    Type: Grant
    Filed: November 14, 2018
    Date of Patent: April 21, 2020
    Inventors: Shin Tadera, Takuya Inazumi
  • Patent number: 10629587
    Abstract: The present technique relates to a protection circuit for a MOSFET and a protection circuit system including the protection circuit all of which can reduce losses in the main current and increase in the manufacturing costs for ensuring a sense area. The protection circuit includes: a first MOSFET for power through which a main current flows; an IGBT which is connected in parallel to the first MOSFET and through which a current diverted from the main current flows; a sense resistor connected in series with the IGBT; and a first control circuit that controls a gate voltage of the first MOSFET based on a value of a voltage to be applied to the sense resistor, wherein a ratio of the diverted current flowing through the IGBT to the main current flowing through the first MOSFET in current value ranges from 0.018% to 0.022%.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: April 21, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shinji Sakai, Hisashi Oda
  • Patent number: 10622914
    Abstract: A Vfc balance controller includes a coefficient multiplying circuit that calculates a value of one half of a voltage, a subtractor, an adder, and a corrector. The adder adds a correction term V?·sin to the output from the coefficient multiplying circuit. The subtractor calculates the difference between voltage Vfc1 of a flying capacitor and the output from the adder. The corrector outputs a correction time of a pulse width so that the output from the subtractor converges to zero. The voltage of the flying capacitor is varied in this manner to reduce ripples on a DC line.
    Type: Grant
    Filed: May 2, 2019
    Date of Patent: April 14, 2020
    Inventor: Yue Ma
  • Patent number: 10615706
    Abstract: A power conversion apparatus includes a plurality of semiconductor modules each with a power terminal protruding therefrom, a capacitor, and a pair of bus bars. The power terminals include a pair of DC terminals electrically connected to the capacitor via the bus bars, and an AC terminal. Each of the bus bars includes terminal connection portions welded to the respective DC terminals and a common portion electrically connected to the plurality of terminal connection portions. The common portions are arranged between the sets of the plurality of power terminals. An insulation member is interposed between the pair of common portions. High-thermal-resistance portions having a higher thermal resistance than the terminal connection portions are each formed between the corresponding terminal connection portion and the corresponding common portion.
    Type: Grant
    Filed: May 15, 2017
    Date of Patent: April 7, 2020
    Inventor: Satoshi Yamaura
  • Patent number: 10615102
    Abstract: The present invention is directed to improving the bonding strength between a bonding wire and a lead frame bonded to a plurality of semiconductor devices electrically connected in parallel. One end and the other end of a first bonding wire are connected to a control electrode and a first lead frame portion or a bent portion of a first semiconductor device, and one end and the other end of a second bonding wire are connected to a control electrode and a second lead frame portion of a second semiconductor device. The first lead frame portion extends in a direction overlapping with the first semiconductor device from the bent portion toward the side opposite to the first semiconductor device side, and the second lead frame portion extends from the bent portion toward the second semiconductor device side in a direction overlapping with the second semiconductor device.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: April 7, 2020
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Yusuke Takagi, Takeshi Tokuyama, Shun Kawano, Takahiro Shimura, Akira Matsushita