For Bridge-type Inverter Patents (Class 363/98)
  • Patent number: 10962600
    Abstract: To carry out diagnosis of a current sensor while maintaining high reliability. An inverter control device according to the present invention controls an inverter circuit, calculates an estimated direct current value on the basis of a duty value and an alternating current sensor value output by an alternating current sensor, and performs diagnosis of a direct current sensor on the basis of the estimated direct current value and a direct current sensor value output by the direct current sensor.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: March 30, 2021
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Ryoichi Inada, Teppei Hirotsu, Satoru Shigeta
  • Patent number: 10924106
    Abstract: Aspects of the present disclosure are directed toward designs and methods of improving driving of switching devices. One proposed solution to improving driving of switching devices is an auxiliary control circuit that selectively guides the switching device through at least one switching region, permitting an improved operation of the switching device.
    Type: Grant
    Filed: January 2, 2019
    Date of Patent: February 16, 2021
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Ramanujam Ramabhadran, Krishna Mainali, Kum-Kang Huh, Maja Harfman-Todorovic, Robert James Thomas, Cong Li
  • Patent number: 10919401
    Abstract: A charging system includes an inverter configured to receive rectified mains line voltage and current to power a primary coil to induce charge current in a secondary coil of a vehicle. The charging system also includes a controller configured to alter a switching frequency of the inverter based on charge voltage data from the vehicle to cause the inverter to operate to drive a voltage of an energy storage capacitor of a battery charger of the vehicle toward a constant value.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: February 16, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Mohamed Elshaer, Chingchi Chen, Mark J. Ferrel, John Paul Gibeau
  • Patent number: 10917017
    Abstract: A resonant power converter includes a full bridge configuration of switching devices and a resonant tank circuit coupled between the full bridge and an isolation transformer having a primary winding and a secondary winding. A full bridge rectifier is coupled between the isolation transformer and a load. A converter controller for generating switching signals for the switching devices includes an outer controller to generate a tank command signal based on a voltage error signal between an output voltage command signal and an actual output voltage signal and an inner controller to generate an actual tank signal based on a secondary winding current and the output voltage command signal. The converter controller also includes a signal generator for generating the switching signals for the switching devices based on a tank error signal between the tank command signal and the actual tank signal.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: February 9, 2021
    Assignee: GE Precision Healthcare
    Inventors: Thomas G McFarland, Eric Aasen
  • Patent number: 10910956
    Abstract: A method is provided for operating a frequency converter, which is designed to drive a three-phase motor, wherein the frequency converter has three half-bridges each having at least two switches. The method includes the following steps: generating three phase voltages for the three-phase motor by a pulse width modulation, wherein, for the pulse width modulation, various switching patterns of the switches are activated, wherein specific star point voltages ensue for various groups of switching patterns; and in at least one operating state of the frequency converter, within a respective period of the pulse width modulation, activating only those switching patterns in which an identical star point voltage ensues.
    Type: Grant
    Filed: July 19, 2016
    Date of Patent: February 2, 2021
    Assignee: Lenze Automation GmbH
    Inventors: Fritz Witte, Thomas Petersen, Dirk Duesterberg
  • Patent number: 10910917
    Abstract: A compact and thermally efficient traction drive motor inverter featuring an integrated printed circuit board carrying both power circuitry and signal circuitry on separate electrically isolated layers without significant electromagnetic interference. Electrical communication with subsequent electrically isolated layers is maintained through the use of plated blind vias. Thermal efficiency is improved by utilizing a liquid cooled insulated gate bipolar transistor module with featuring internal flow balancers to optimize coolant flow.
    Type: Grant
    Filed: February 12, 2018
    Date of Patent: February 2, 2021
    Assignee: Beijing E. Motor Advance Co. Ltd.
    Inventors: George R Woody, Nayeem Arafat, Lon C Cooper
  • Patent number: 10873098
    Abstract: When reduction of insulation resistance is detected, an FC positive side relay is opened, and a switching element is turned OFF. When the insulation resistance has returned to a normal value as a result of the relay opening and the switching element turning OFF, it is identified that the power leakage is occurring in the area between the positive side relay and the diode.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: December 22, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiromu Saito, Keiichi Toriumi
  • Patent number: 10855381
    Abstract: A fiber optic-based communications network includes: a power insertion device, connected to multiple fiber links from a data source, configured to provide power insertion to a hybrid fiber/power cable connected to at least one fiber link of the multiple fiber links; the hybrid fiber/power cable, connecting the power insertion device to a connection interface device, configured to transmit data and power from the power insertion device to the connection interface device; and the connection interface device, configured to provide an interface for connection to an end device via a power over Ethernet (PoE)-compatible connection and to provide optical to electrical media conversion for data transmitted from the power insertion device to an end device via the hybrid fiber/power cable and the PoE-compatible connection.
    Type: Grant
    Filed: January 5, 2017
    Date of Patent: December 1, 2020
    Assignee: RADIUS UNIVERSAL LLC
    Inventor: Donald Lee Sipes, Jr.
  • Patent number: 10797614
    Abstract: A system that may include, plural inverters connected to a common bus and at least one capacitor, the inverters configured to convert a direct current (DC) through the common bus to an alternating current (AC) by alternating different switches of the inverters between open and closed states in a respective switching cycle for each of the inverters, and a controller circuit configured to reduce a ripple current conducted onto the common bus to the inverters, by controlling the inverters to apply a frequency shift to the respective switching cycle of one or more of the inverters to spread a harmonic current spectrum along the common bus. The controller circuit is configured to apply the frequency shift to at least a first inverter and a second inverter of the plural inverters.
    Type: Grant
    Filed: April 8, 2019
    Date of Patent: October 6, 2020
    Assignee: GE Global Sourcing
    Inventors: Ajith Kuttannair Kumar, Subhas Chandra Das
  • Patent number: 10784856
    Abstract: A semiconductor device includes a first drive circuit and a bootstrap control circuit. When a voltage VB is equal to or smaller than a power supply voltage VCC, the boost control circuit turns on a MOSFET by controlling a gate signal input to a gate terminal, and a back gate control circuit makes a voltage applied to a back gate terminal smaller than the voltage VB.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: September 22, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Mitsutaka Hano, Akihisa Yamamoto
  • Patent number: 10767591
    Abstract: The present application relates to an abnormality determination device for a variable geometry turbocharger having a nozzle mechanism capable of changing a flow path area of exhaust gas with an actuator. The abnormality determination device includes: a first detection part configured to be capable of detecting at least one of a load of the actuator or supply energy to the actuator; and a determination part configured to determine that an abnormality is present, if a detection result by the first detection part is out of an allowable range corresponding to an operational state of the variable geometry turbocharger.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: September 8, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventor: Mitsufumi Goto
  • Patent number: 10763246
    Abstract: A device includes a driver circuit, a first semiconductor chip monolithically integrated with the driver circuit in a first semiconductor material, and a second semiconductor chip integrated in a second semiconductor material. The second semiconductor material is a compound semiconductor.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: September 1, 2020
    Assignee: Infineon Technologies AG
    Inventors: Ralf Otremba, Klaus Schiess, Oliver Haeberlen, Matteo-Alessandro Kutschak
  • Patent number: 10734898
    Abstract: A multi-level switching power converter includes a string of N upper transistors and a string of N lower transistors, where N is an integer greater than one. The N upper transistors are electrically coupled in series between a first power node and a switching node, and the N lower transistors are electrically coupled in series between the switching node and a reference node. The multi-level switching power converter further includes N?1 flying capacitors, an inductor, a bypass transistor, and a controller. The bypass transistor is electrically coupled between the switching node and the reference node. The controller is configured to (a) control switching of the N upper transistors and the N lower transistors and (b) cause the bypass transistor to operate in its on state in response to all of the N lower transistors operating in their respective on states.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: August 4, 2020
    Assignee: Maxim Integrated Products, Inc.
    Inventors: Cory B. Arnold, Ilija Jergovic
  • Patent number: 10728483
    Abstract: A comparison device includes; a comparison block suitable for comparing a pixel signal with a reference voltage including a ramp-up signal and a ramp-down signal; a correlated double sampling (CDS) block suitable for performing a correlated double sampling operation on the pixel signal; a first switch suitable for selectively inputting the ramp-up signal as the reference voltage based on a first switch control signal; a second switch suitable for selectively inputting the ramp-down signal as the reference voltage based on a second switch control signal; and a feedback control unit suitable for generating the first and second switch control signals based on a result of the comparison during an initialization operation.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: July 28, 2020
    Assignee: SK hynix Inc.
    Inventor: Tae-Gyu Kim
  • Patent number: 10720843
    Abstract: Multi-level DC-to-DC converter circuits and methods that permit a full range of output voltages, including near and at zone boundaries. Embodiments alternate among adjacent or near-by zones, operating in a first zone for a selected time and then in a second zone for a selected time. Embodiments may include a parallel capacitor voltage balancing circuit that connects a capacitor to a source voltage to charge that capacitor, or couples two or more capacitors together to transfer charge, all under the control of real-time capacitor voltage measurements. Embodiments may include a lossless voltage balancing solution where out-of-order state transitions are allowed, thus increasing or decreasing the voltage across specific capacitors to prevent voltage overstress on the converter main switches. Restrictions may be placed on the overall sequence of state transitions to reduce or avoid transition state toggling, allowing each capacitor an opportunity to have its voltage steered as necessary for balancing.
    Type: Grant
    Filed: January 16, 2019
    Date of Patent: July 21, 2020
    Assignee: pSemi Corporation
    Inventors: Gary Chunshien Wu, David M. Giuliano, Gregory Szczeszynski
  • Patent number: 10714939
    Abstract: A longitudinal voltage source interconnects into a first line and a second line and feeds a longitudinal voltage into each of the two lines. The voltage source has first and second H-bridge circuits, each with four switches, and with outer terminals and center terminals. The center terminals are connectable to disconnected locations of the first and second lines. A capacitor has a first capacitor terminal connected to the two first output terminals of the two H-bridge circuits and a second capacitor terminal connected to the two second output terminals of the two H-bridge circuits. One or more switching modules are connected between the first capacitor terminal and the first output terminals of the first and second H-bridge circuits, and one or more switching modules are connected between the second capacitor terminal and the second output terminals of the first and second H-bridge circuits.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: July 14, 2020
    Assignee: Siemens Aktiengesellschaft
    Inventors: Mark-Matthias Bakran, Viktor Hofmann
  • Patent number: 10707801
    Abstract: An electric vehicle drive system includes a power battery, a drive, a motor, a detection module, a torque reference module, and a controller, and the drive includes a filtering module, a first conversion module, a first capacitor, and a second conversion module. A positive electrode of the power battery is connected to an input end of the filtering module, and a first output end of the filtering module is connected to an alternating current end of the first conversion module. One end of the first capacitor is separately connected to direct current input ends of the first conversion module and the second conversion module, and the other end of the first capacitor is separately connected to direct current output ends of the first conversion module and the second conversion module and a negative electrode of the power battery.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: July 7, 2020
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Jie Yi, Jie Tang
  • Patent number: 10697682
    Abstract: A motor assembly configured to receive an external alternating voltage. The motor assembly includes a motor and a circuit assembly. The motor includes a stator and a rotor rotatable about a longitudinal axis. The circuit assembly includes a state detector and a control unit. The state detector is operable to detect whether an external device is receiving the external alternating voltage The control unit is operable to control the motor based on whether the external device is receiving the external alternating voltage.
    Type: Grant
    Filed: October 12, 2015
    Date of Patent: June 30, 2020
    Assignee: Regal Beloit America, Inc.
    Inventors: Jeffrey A. Wilson, Guy Bonner, Vijay Earanky, Marc C. McKinzie
  • Patent number: 10682919
    Abstract: An electric vehicle includes: a motor that is arranged on a first side of front and rear sides of a vehicle; a rechargeable electric source that is arranged closer to a vehicle room than the motor; an inverter unit that includes an inverter which is fixed to the motor and which is configured to control and drive the motor by electric power that is supplied from the electric source; a charge circuit for charging the electric source; and a first unit that is fixed to a vehicle body at the first side of the vehicle, wherein the inverter unit is connected to the electric source by a cable, and the first unit is connected to the electric source by a cable that is independent of the cable which connects together the inverter unit and the electric source.
    Type: Grant
    Filed: May 23, 2018
    Date of Patent: June 16, 2020
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Makoto Hatami
  • Patent number: 10686443
    Abstract: A transmitting device of the present disclosure includes: a voltage generator that generates a predetermined voltage; a first driver including a first sub-driver and a second sub-driver, the first dub-driver that includes a first switch provided on a path from a first power source to a first output terminal, a second switch provided on a path from a second power source to the first output terminal, and a third switch provided on a path from the voltage generator to the first output terminal, and is allowed to set a voltage state of the first output terminal to any of a predetermined number of voltage states which are three or more voltage states, and the second sub-driver that is allowed to adjust a voltage in each of the voltage states of the first output terminal; and a controller that controls an operation of the first driver to perform emphasis.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: June 16, 2020
    Assignee: Sony Semiconductor Solutions Corporation
    Inventors: Takahiro Shimada, Hiroaki Hayashi
  • Patent number: 10658946
    Abstract: Disclosed is a device for detecting an instantaneous maximum output current of an inverting module as a peak-current thereof. The inverting module converts a direct current (DC) link voltage to an alternate current (AC) voltage, and includes three-phases legs. Each leg has lower and upper switching elements connected in series. The device includes a shunt resistor serially connected to a lower switching element of each leg of the inverting module; a current detection module configured for detecting an output current from a signal output from each shunt resistor; and a summer configured for receiving and summing the detected output currents from the current detection module and outputting the instantaneous maximum output current of the inverting module as the peak-current thereof.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: May 19, 2020
    Assignee: LSIS CO., LTD.
    Inventors: Jae-Moon Lee, Chun-Suk Yang
  • Patent number: 10476392
    Abstract: A switching power supply device generates a DC output voltage, which is to be outputted to a load and is based on a DC input voltage. The switching power supply device includes n converter units and a control unit. The DC output voltage is compared with a voltage range selected out of a first voltage range and a second voltage range set in advance and the control unit executes one of first driving control to fourth driving control depending on the present driving control and the comparison result for the DC output voltage. By switching between the first to fourth driving control, the control unit changes the number of converter units to be driven.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: November 12, 2019
    Assignee: TDK CORPORATION
    Inventors: Ken Matsuura, Min Lin
  • Patent number: 10418903
    Abstract: A switching circuit includes: a DC electric power supply; a first switching element; a second switching element; a resistor that is connected to the DC electric power supply in series with the second switching element; a voltage sensor that detects a voltage applied to the resistor; and a control device, wherein: a current flowing through the first switching element is larger than a current flowing through the second switching element; and the control device is configured to: turn off the second switching element and then turn off the first switching element; and compute a voltage applied between the first collector and the first emitter by integrating a value proportional to a voltage that is detected by the voltage sensor after turning off the first switching element.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: September 17, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Atsuko Yokoyama
  • Patent number: 10389185
    Abstract: A communication apparatus includes first communication means having a first communication function for wirelessly communicating with a partner apparatus, and second communication means having an electric power supply function for wirelessly supplying electric power to the partner apparatus and a second communication function for wirelessly communicating with the partner apparatus. The second communication function is for transmitting specific data sequence to the partner apparatus in response to reception of specific data from the partner apparatus, and the electric power supply function is for supplying electric power to the partner apparatus in a case of receiving from the partner apparatus, with the first communication means, a signal indicating that the partner apparatus has received the data sequence.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: August 20, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hidetada Nago
  • Patent number: 10374513
    Abstract: An AC-DC converter that converts an AC power supply voltage to a DC output voltage of a prescribed magnitude with power factor regulation includes a voltage regulation unit; an instantaneous value command calculator; a current regulation unit; an output voltage command calculator; a drive signal generator that generates a drive signal for a semiconductor switching device from the output voltage command and a carrier signal, the driving signal being provided to the semiconductor switching device so as to switch the semiconductor switching device ON and OFF; and a rectified voltage estimation unit that that derives an estimated value of a rectified voltage obtained by rectifying the AC power supply voltage from the output voltage command without actually detecting a rectified voltage, for providing to the instantaneous value command calculator and the output voltage command calculator.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: August 6, 2019
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventor: Ryuji Yamada
  • Patent number: 10339407
    Abstract: Mitigation of noise in vector space representations of item collections for applications such as facial recognition and spam detection. After receiving a collection of items, each item characterized by a plurality of features, a first vector space representative of the collection is prepared. Each item in the first vector space is represented by a vector that is a function of the features characterizing the item. Based on information characteristic of the first vector space, at least one of items contributing to first vector space noise, and features contributing to first vector space noise are identified. The first identified items and features are weighted to decrease the influence of the first identified items and features on vector spaces representative of the collection. A second vector space representative of the collection is prepared based on the first weighted items and features.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: July 2, 2019
    Assignee: MAXIM ANALYTICS, LLC
    Inventor: Roger Bradford
  • Patent number: 10333343
    Abstract: An uninterruptible power system includes a power conversion apparatus, a switch unit and a control apparatus. The switch unit outputs a mains voltage in a line mode, and output an alternating conversion voltage in a battery mode. The control apparatus is configured to generate a base triangular wave signal according to the mains voltage. When the uninterruptible power system is in a battery mode and the control apparatus detects the regeneration of the mains voltage, the control apparatus is configured to determine whether a cross-over value of the base triangular wave signal is within a predetermined range when the mains voltage is at a zero-cross point. The control apparatus is configured to control the switch unit to output the mains voltage instead of the alternating conversion voltage when the cross-over value of the base triangular wave signal is within the predetermined range.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: June 25, 2019
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Tien-He Chen, Chiao-Chien Lin
  • Patent number: 10319631
    Abstract: A power semiconductor package includes a first group of semiconductor dies attached to a first side of a substrate and evenly distributed over a width of the substrate and a second group of semiconductor dies attached to the first side of the substrate and evenly distributed over the substrate width. Each die in the first and second groups has all terminals at one side which is attached to the first side of the substrate and an insulated or isolated face at a side opposite the side with the terminals. A first intermediary metal layer of the substrate forms a first DC terminal. A second intermediary metal layer of the substrate forms a second DC terminal. These intermediary metal layers are insulated from one another and form a parallel plate waveguide. Additional power semiconductor package embodiments are described.
    Type: Grant
    Filed: May 30, 2018
    Date of Patent: June 11, 2019
    Assignee: Infineon Technologies AG
    Inventor: Reinhold Bayerer
  • Patent number: 10312795
    Abstract: An inverter has a plurality of switching elements, the states of which are each switched by a pulse signal supplied in accordance with a power grid voltage. The inverter is provided with: a switching circuit that converts an input DC voltage to an AC voltage and outputs the AC voltage to a pair of output lines; a filter circuit having output coils inserted in the output lines; a current detection sensor that detects the current flowing through the output coils; and a high-speed pulse control circuit that, when an absolute value of the detected current is a threshold value or more, stops the supply of the pulse signal to the switching circuit.
    Type: Grant
    Filed: January 11, 2017
    Date of Patent: June 4, 2019
    Assignee: OMRON Corporation
    Inventors: Takeo Nishikawa, Hironori Nakada, Satoshi Iwai, Hiroki Kawano, Yuhki Kamatani, Kuniyuki Hirai
  • Patent number: 10284114
    Abstract: The present invention discloses a modulation method for inverter AC waveform. The detailed steps of the modulation method comprise: generating an AC waveform which includes at least three time periods, wherein a middle time period corresponds to a peak segment of the AC waveform, and the remaining time periods are averaged corresponding to the rise and decline segments of the AC waveform; and during the at least three time periods, a duty ratio modulated driving signal is generated according to different duty ratios, so as to modulate the AC waveform and generate a stepping AC waveform converted from the AC waveform. The stepping AC waveform generated by the modulation method of the present invention will have a longer dwell time at zero potential, so as to turn on the AC electric tool more efficiently.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: May 7, 2019
    Assignee: PHIHONG TECHNOLOGY CO., LTD.
    Inventors: Ming Huang Hung, Jiun-Ping Huang, Po-Chi Hung, Mu Hsun Chen
  • Patent number: 10148225
    Abstract: A method for determining capacitance values of capacitances of a photovoltaic system including a multiphase inverter which includes an output current filter on an alternating current side thereof and is connected to a multiphase energy supply network via a switching element and is associated with at least one intermediate circuit capacitance on the direct current side thereof is provided.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: December 4, 2018
    Assignee: SMA Solar Technology AG
    Inventors: Alexander Unru, Harald Drangmeister, Tobias Mueller, Pablo Correa Vasquez
  • Patent number: 10096435
    Abstract: A digitalized double-excitation uninterrupted switching power supply comprises a main transformer provided with a primary coil and a secondary coil, a main loop, a synchronous rectification output loop, a synchronous direct-current converter and a digital control unit, wherein the main loop comprises a high-voltage switching network, a resonant inductor, the primary coil and a resonant capacitor. The synchronous rectification output loop comprises a current-doubler rectifier formed by connecting two synchronous rectifier tubes in series oppositely and the secondary coil in parallel, and a filter circuit connected to two output ends of the current-doubler rectifier. The synchronous direct-current converter comprises two low-voltage switching tubes, an isolator and a low-voltage direct-current source.
    Type: Grant
    Filed: May 27, 2017
    Date of Patent: October 9, 2018
    Inventor: Mau Shin Frank Yim
  • Patent number: 10008411
    Abstract: A power semiconductor package includes a first group of semiconductor dies attached to a first side of a substrate and evenly distributed over a width of the substrate and a second group of semiconductor dies attached to the first side of the substrate and evenly distributed over the substrate width. Each die in the first and second groups has all terminals at one side which is attached to the first side of the substrate and an insulated or isolated face at a side opposite the side with the terminals. A first intermediary metal layer of the substrate forms a first DC terminal. A second intermediary metal layer of the substrate forms a second DC terminal. These intermediary metal layers are insulated from one another and form a parallel plate waveguide. Additional power semiconductor package embodiments are described.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: June 26, 2018
    Assignee: Infineon Technologies AG
    Inventor: Reinhold Bayerer
  • Patent number: 9871416
    Abstract: A resonant type high frequency power supply device provided with a power semiconductor element that performs a switching operation at a high frequency exceeding 2 MHz, the resonant type high frequency power supply device including a variable inductor that makes an adjustment to the amplitude of a device output voltage.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: January 16, 2018
    Assignee: Mitsubishi Electric Engineering Company, Limited
    Inventors: Yoshiyuki Akuzawa, Kiyohide Sakai, Toshihiro Ezoe, Yuki Ito
  • Patent number: 9800137
    Abstract: A power supply startup system activates a power supply of a device provided with a battery or the like at high speed by a wireless signal while suppressing current consumption on standby. The power supply startup system includes a battery, a device supplied with a power from the battery, and a controller which performs wireless communication with the device. The device includes a power supply section which generates a power supply from the battery, a startup section which receives a wireless startup signal transmitted by the controller and outputs a startup signal to the power supply section, a control section which controls the power supply section and the startup section, and a wireless communication section which performs wireless communication with the controller. The wireless startup signal includes at least two signal regions of a first stage and a second stage.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: October 24, 2017
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Takahide Terada, Mutsumi Kikuchi, Akihiko Kudo, Takanori Yamazoe, Hiroshi Iwasawa
  • Patent number: 9735685
    Abstract: The present invention discloses an interleaved LLC convertor with current sharing.
    Type: Grant
    Filed: October 17, 2013
    Date of Patent: August 15, 2017
    Assignee: Eaton Corporation
    Inventors: Kunfeng Li, Huali Zhang, Denis Deng, Jack Gu, Yuefeng Yang
  • Patent number: 9599646
    Abstract: A power generation apparatus includes a power calculation unit configured to receive voltage information and temperature information from a power generation module, and calculate power generation information of the power generation module based on the received voltage information and temperature information.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: March 21, 2017
    Assignee: SONY CORPORATION
    Inventor: Masayuki Yokoyama
  • Patent number: 9368993
    Abstract: A method and apparatus for multiplexing an electrical contact interface between two electrical devices uses a time differentiated enablement of two or more different circuit elements in a first electrical device that are accessed via the multiplexed contact by a second electrical device. A timing control circuit in the first electrical device enables and disables circuit elements in the first electrical device coupled to a shared information contact over time. The second electrical device interacts with a first circuit element during an initial period upon connection to the first electrical device, and then interacts with a second circuit element after the initial period.
    Type: Grant
    Filed: March 1, 2013
    Date of Patent: June 14, 2016
    Assignee: MOTOROLA SOLUTIONS, INC.
    Inventors: Viranga L. Wijeratne, Donald L. Flowers, John E. Herrmann, Bradley E. Long, Frederick J. Weissinger
  • Patent number: 9300226
    Abstract: There is provided a solar power generation system including a solar cell, an inverter converting a direct current power generated by the solar cell into an alternating current power, a system voltage measurement unit measuring a system voltage, a voltage drop detector detecting a voltage drop of a power system, based on the system voltage, a first direct current voltage controller controlling a direct current voltage of the inverter to enhance a power generation efficiency of the solar cell, when the voltage drop is not detected, and a second direct current voltage controller controlling the direct current voltage of the inverter to suppress a current output from the inverter, when the voltage drop is detected.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: March 29, 2016
    Assignee: TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIALS SYSTEMS CORPORATION
    Inventors: Ruben Alexis Inzunza Figueroa, Eiichi Ikawa, Takeshi Sumiya
  • Patent number: 9294010
    Abstract: Exemplary embodiments are directed to a method for controlling a switching branch of a three-level converter to enter a stop state. The switching branch including a first semiconductor switch and a second semiconductor switch, a first diode and a second diode, a third semiconductor switch and a fourth semiconductor switch, a third diode, and a fourth diode, a fifth semiconductor switch and a sixth semiconductor switch, a fifth diode, and a sixth diode, and a manner of controlling the semiconductor switches. When the switching branch is set to enter a stop state, current flowing in a main circuit of the switching branch is transferred in a controlled manner to diodes that conduct the current, when all the semiconductor switches of the main circuit of the converter are turned OFF.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: March 22, 2016
    Assignee: ABB TECHNOLOGY OY
    Inventors: Tero Viitanen, Mikko Saarinen
  • Patent number: 9281776
    Abstract: A power conversion apparatus includes a power-conversion circuit unit that includes at least two voltage-type bridge circuits of an upper and lower arm configuration including switching elements connected in series, each of the switching elements including a transistor and a free wheel diode connected to the transistor in inverse parallel. Each of the voltage-type bridge circuits is configured to include, as the free wheel diodes: a SiC-SBD (SiC-Schottky-Barrier Diodes) in both upper and lower arms; a SiC-SBD only in the upper arm; a SiC-SBD only in the lower arm; or a diode other than the SiC-SBD in both the upper and lower arms; and the power-conversion circuit unit is configured by combining at least two configurations among the four configurations for the voltage-type bridge circuits.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: March 8, 2016
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yuji Nojiri, Masanori Kato, Akira Imanaka, Masaya Harakawa
  • Patent number: 9270188
    Abstract: Disclosed herein is a direct current to direct current (DC-DC) converter. The DC-DC converter includes a first bridge and a second bridge. The first bridge includes a first switch and a second switch, whereas the second bridge includes a third switch and a fourth switch. The second bridge is in parallel connection with the first bridge. The second switch is in series connection with the first switch, and the fourth switch is in series connection with the third switch. The DC-DC converter switches between a first mode and a second mode based on a detection signal. Further, a method for controlling the DC-DC converter is also disclosed herein.
    Type: Grant
    Filed: October 18, 2013
    Date of Patent: February 23, 2016
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Chao Yan, Mi Chen
  • Patent number: 9263960
    Abstract: A power converter topology is adapted for efficiency according to input voltage, output voltage or output current conditions. Topology adaptation is achieved by control responsive to the input and output operating conditions, or to one or more external control signals. Transition between any two topologies is implemented by pulse width modulation in the two switches in one of two bridge legs of a full bridge converter. When transitioning from full-bridge to half-bridge topology, the duty ratio of one switch in one leg of the full bridge is increased, while simultaneously the duty ratio of the other switch in the same leg is reduced until one switch is continuously on, while the other switch is continuously off. The transition from the half-bridge to the full-bridge topology is accomplished by modulating the same switches such that, at the end of the transition, both switches operate with substantially the same duty cycle.
    Type: Grant
    Filed: September 16, 2013
    Date of Patent: February 16, 2016
    Assignee: Delta Electronics, Inc.
    Inventors: Milan M. Jovanović, Brian T. Irving
  • Patent number: 9242564
    Abstract: A converter for an electrical machine having a plurality of phase lines for connecting the electrical machine. For each phase line the converter has a half-bridge with a first semiconductor switch is configured to electrically connect at least one of the phase lines intermittently to a first supply line of the converter, and a second semiconductor switch configured to electrically connect the phase line intermittently to a second supply line of the converter. The converter is configured for operation in a first energy recovery limiting mode in which at least two of the first semiconductor switches are at least intermittently on simultaneously.
    Type: Grant
    Filed: July 11, 2012
    Date of Patent: January 26, 2016
    Assignee: MAGNA Powertrain AG & Co KG
    Inventors: Thomas Feichtinger, Wolfgang Paul, Christian Spindelberger, Jürgen Tannheimer
  • Patent number: 9219426
    Abstract: A switching element of a power converter generates a low voltage, using a current flowing in the power converter, and supplies a power to drive itself. A switching element of a power converter for conversion from direct current into alternate current or from alternate current into direct current includes: a terminal and a terminal which are used in building the switching element itself in the power converter; a capacitor, a high-side controllable switch and a low-side controllable switch enabling outputting the voltage of the capacitor, the voltage being output between the terminal and the terminal, and a self-supply power source for supplying a power to drive the bi-directional chopper switching element itself, using a current flowing in the capacitor.
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: December 22, 2015
    Assignee: Hitachi, Ltd.
    Inventors: Takayoshi Yamamoto, Masaya Ichinose, Akira Bando, Keiichi Yamashita, Shigenori Inoue, Toru Yoshihara, Yoshio Eguchi, Osamu Sakuchi, Shuji Katoh, Tomomichi Ito
  • Patent number: 9214874
    Abstract: Systems and methods are provided for controlling an uninterruptible power supply (UPS) to transition between three- or higher-level operation and two-level operation in a neutral-point-clamped (NPC) inverter. In an example, a UPS system includes an NPC inverter and a controller. The NPC inverter may supply power to a load. The controller may control the inverter to operate in a three-level mode or higher when the load is substantially balanced and to operate in a two-level mode when the load is substantially unbalanced.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: December 15, 2015
    Inventors: Yashomani Y. Kolhatkar, Silvio Colombi, Marco Piemontesi, Lauro Strozzi, M N Lakshmi Prasad
  • Patent number: 9214881
    Abstract: A DC link is provided, which includes a capacitor connected in parallel to an output of a converter circuit, and outputs a pulsating DC link voltage. An inverter circuit is provided, which converts an output of the DC link to AC by switching, and supplies the AC to a motor connected thereto. A controller is provided, which controls switching of the inverter circuit so that motor currents pulsate in synchronization with pulsation of a power-supply voltage. The controller controls the switching of the inverter circuit in accordance with a load of the motor or an operational state of the motor, and reduces pulsation amplitude of the motor currents.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: December 15, 2015
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Morimitsu Sekimoto, Tomoisa Taniguchi, Hiroshi Hibino, Toshiyuki Maeda
  • Patent number: 9190905
    Abstract: A switching power supply device includes: a positive voltage output circuit connected to a direct-current power supply, the positive voltage output circuit including a first switching element, a voltage boosting inductor, a first rectifying element and a first capacitor; a negative voltage output circuit connected to the power supply, the negative voltage output circuit including a second switching element, a voltage dropping inductor, a second rectifying element and a second capacitor; and an adder circuit configured to add switching currents flowing when the first and the second switching elements are operated. The circuit elements of the positive voltage output circuit are symmetrical with those of the negative voltage output circuit. The first switching current of the positive voltage output circuit and the second switching current of the negative voltage output circuit are generated in mutually opposite directions and are inputted to the adder circuit.
    Type: Grant
    Filed: February 13, 2012
    Date of Patent: November 17, 2015
    Assignee: ROHM CO., LTD.
    Inventor: Ryosuke Inagaki
  • Patent number: RE46230
    Abstract: An inverter configured for use within a vehicle to power consumer electronic devices and other types of devices requiring single-phase, AC energy. The inverter may include a network interface or other type of the connection to a vehicle data bus or other message exchange system in order to communicate with an electronic control unit (ECU) or other feature included within the vehicle to monitor and control energy consumption by one or more vehicle subsystems.
    Type: Grant
    Filed: November 6, 2014
    Date of Patent: December 6, 2016
    Assignee: Lear Corporation
    Inventors: Benjamin D. Sweet, Raymond Hanjaya, William Cruickshank, Aftab Ali Khan
  • Patent number: RE46256
    Abstract: Techniques for performing DC to DC power conversion in switch-mode converter circuits include combinations of dynamic switch shedding, phase shedding, symmetric phase circuit topologies, and asymmetric phase circuit topologies. In at least one embodiment of the invention, a method of operating a power converter circuit includes operating a first phase switch circuit portion using a first number of switch devices when the power converter circuit is configured in a first mode of operation. The first number is greater than zero. The method includes operating the first phase switch circuit portion using the first number of switch devices when the power converter circuit is configured in a second mode of operation. The method includes operating a second phase switch circuit portion using a second number of switch devices when the power converter circuit is configured in the second mode of operation. The second number is greater than the first number.
    Type: Grant
    Filed: May 24, 2013
    Date of Patent: December 27, 2016
    Assignees: Advanced Micro Devices, Inc., ATI Technologies ULC
    Inventors: Peter Thomas Hardman, Erwin Pang, Sanjiv K. Lakhanpal