Using Semiconductor-type Converter Patents (Class 363/123)
  • Patent number: 10727843
    Abstract: A method for operating a wind turbine configured to supply electrical power to an electrical power supply network via a converter comprises measuring a phase angle and measuring a voltage of the electrical power supply network. A value of at least one parameter for a phase locked loop is determined depending on the measured voltage. The phase locked loop is used to determine a corrected phase angle depending on the measured phase angle and the voltage of the electrical power supply network. The corrected phase angle is input into the converter.
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: July 28, 2020
    Assignees: Nordex Energy GmbH, Woodward Kempen GmbH
    Inventors: Nils-Hendric Schall, Andreas Genius, Nils Hoffmann
  • Patent number: 10707775
    Abstract: A method and apparatus for multi phase shift control of a power converter. In one embodiment, the method comprises controlling a phase shift between a left leg and a right leg of a first bridge of the power converter during operation of the power converter; and controlling a phase shift between the first bridge and a second bridge of the power converter during the operation of the power converter, wherein the phase shift between the left and the right legs and the phase shift between the first and the second bridges are controlled based on an input voltage of the power converter and a required output voltage of the power converter.
    Type: Grant
    Filed: August 4, 2014
    Date of Patent: July 7, 2020
    Assignee: Enphase Energy, Inc.
    Inventors: Michael J. Harrison, Donald Richard Zimmanck, Martin Fornage
  • Patent number: 10707747
    Abstract: Two versions of an isolated single stage converter AC/DC Power Factor Corrected (PFC) converter topology have been invented. One is with a full bridge rectifier at its input and the other is a True Bridgeless version. The two versions of the topology feature new configurations and circuitry including a simplified damper circuit and a clamp capacitor flipping circuit and control methods that allow them to realize improved single stage isolated power factor converters which are suitable for high power operation, features Zero Voltage Switching to maximize conversion efficiency and to minimize ElectroMagnetic Interference generation, does not need an additional circuit to limit the inrush current, achieves reasonably low input current Total Harmonic Distortion (THD), and is easy to control. The second version provides a true bridgeless single stage isolated power factor converter with even higher efficiency and lower input current THD.
    Type: Grant
    Filed: September 11, 2019
    Date of Patent: July 7, 2020
    Inventor: Christopher Donovan Davidson
  • Patent number: 10666164
    Abstract: Disclosed is a bidirectional conversion circuit, including a first bidirectional conductive network, a second bidirectional conductive network, a first switching transistor, a second switching transistor, a first diode, and a second diode, where the first bidirectional conductive network is connected in series to the first switching transistor to form a first branch, and a first end of the first branch is connected to a cathode of the first diode to form a first endpoint; and the second bidirectional conductive network is connected in series to the second switching transistor to form a second branch, and a second end of the second branch is connected to an anode of the second diode to form a third endpoint.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: May 26, 2020
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Kui Zhou, Yiping Huang, Haoren Shan
  • Patent number: 10615717
    Abstract: A three phase inverting device includes a three phase inverter module and a three phase filter module. The three phase inverter module includes a plurality of switches, each two switches are connected for forming a bridge arm, an input end of each of the bridge arm are coupled for forming a DC end, the DC end is connected to a DC load. The three phase filter module is connected to the three phase inverter module, wherein the three phase filter module includes a plurality of inductances and a plurality of capacitances, the inductances are connected at one side of the capacitances, a portion of the capacitances are connected to a output end of each of the bridge arm of the three phase inverter module, a portion of the inductances are connected to an AC end.
    Type: Grant
    Filed: August 13, 2019
    Date of Patent: April 7, 2020
    Assignee: NATIONAL TSING HUA UNIVERSITY
    Inventors: Tsai-Fu Wu, Ying-Yi Jhang, Yen-Hsiang Huang, Ling-Chia Yu
  • Patent number: 10511303
    Abstract: The present disclosure presents a circuit, a method, and a system to drive a half-bridge switch using depletion (D) mode compound semiconductor (III-V) switching transistors for a DC-DC converter using at least one driver to drive the switches of the circuit. Also included is at least one charge pump electrically connected to a gate of the transistor, to maintain a voltage that holds the transistor in an off-state. The circuit includes AC coupling capacitors to level shift a voltage and realize fast transistor switching.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: December 17, 2019
    Assignee: Sarda Technologies, Inc.
    Inventors: Bogdan M. Duduman, Anthony G. P. Marini, William R. Richards, Jr., William E. Batchelor, Greg J. Miller, John K. Fogg
  • Patent number: 10476402
    Abstract: In a multilevel converter, three switches are connected between three arms and three reactors, and three resistive elements are connected to the respective three switches in parallel. The three switches are configured to be in a conductive state during a normal operation. The three switches are configured to come into a non-conductive state when a short circuit accident occurs between two DC power transmission lines, whereby an inter-arm direct current flowing in four arms and the like is quickly attenuated by the three resistive elements.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: November 12, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Ryosuke Uda, Kenichi Kuroda, Masashi Kitayama
  • Patent number: 10434882
    Abstract: A track-bound vehicle converter comprises a block-wave generator (20) configured to be connected to a direct voltage source (21) and connected to a series resonance link (34), or to an inductive link, for providing the input of a direct converter (41) with semi sinusoidal current pulses. The direct converter has at least one phase leg (42-44) having on one hand one switch (45-47) connected to the link (34) and able to block voltages in both directions thereacross and conduct current in both directions therethrough and on the other a capacitor (48-50) connected in series therewith. The voltage across the capacitor (48-50) of the direct converter is used to provide a converter output with an alternating voltage.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: October 8, 2019
    Assignee: Bombardier Transportation GmbH
    Inventors: Hans Bängtsson, Lennart Kruse, Luyu Wang
  • Patent number: 10439393
    Abstract: A switching system includes a switching assembly and a transformer. The switching assembly includes multiple sets of switch cells conductively coupled to different power conductors that extend between a power source and a load and conduct different phases of current. Each set of switch cells controls conduction of a different phase of current to the load. The transformer has a primary winding and multiple secondary windings that are conductively coupled to the sets of switch cells. Responsive to receiving an activation control signal from the transformer via the secondary windings, the sets of switch cells are configured to activate to conduct the multiple phases of current from the power source to the load along the power conductors.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: October 8, 2019
    Assignee: General Electric Company
    Inventors: Antonio Caiafa, Ahmed Elasser, Dong Dong
  • Patent number: 10396678
    Abstract: In a multilevel converter, three first rectifying elements are respectively connected between three arms and a negative voltage terminal. Three second rectifying elements are respectively connected to the three first rectifying elements in antiparallel. During a normal operation, current flows in the three first rectifying elements and the three second rectifying elements. When a short circuit accident occurs between two DC power transmission lines, the three first rectifying elements are brought into the non-conductive state, thereby interrupting and quickly attenuating inter-arm direct current flowing in four arms and the like.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: August 27, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Ryosuke Uda, Kenichi Kuroda, Masashi Kitayama
  • Patent number: 10243484
    Abstract: A current flow control assembly, for controlling current flow in an electrical network of interconnected electrical elements, having: current flow controllers, each current flow controller connectable to at least one of the interconnected electrical elements, and being configured to control current flow in at least one of the interconnected electrical elements within a current flow control range; a control unit in communication with each of the current flow controllers, wherein the control unit is configured to: select at least one of the current flow controllers with a flow control range that corresponds to one or more current flow control requirements of the electrical network; and operate the selected current flow controller to control current flow in at least one of the interconnected electrical elements to control current flow in the electrical network in accordance with the current flow control requirement of the electrical network.
    Type: Grant
    Filed: November 7, 2015
    Date of Patent: March 26, 2019
    Assignee: GENERAL ELECTRIC TECHNOLOGY GMBH
    Inventors: Fainan Anmed Abdul Maguid Mohammed Hassan, Joan Saubassols, Eduardo Prieto Araujo, Oriol Gomis Bellmunt
  • Patent number: 10152069
    Abstract: A system for controlling voltage unbalance in a direct current distribution system includes a measurement processor configured to measure a positive load current, and a negative load current at a first load point, including a first load connected to a positive line and a neutral line and a second load connected to the neutral line and a negative line, and at a second load point in a power distribution system; and a control processor configured to determine whether to activate a first load point switching signal based on the positive and negative load currents at the first and second load points to control the first load point to switch the connections of the first load and the second load between the positive line and the negative line.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: December 11, 2018
    Assignee: Research & Business Foundation Sungkyunkwan University
    Inventors: Chul Hwan Kim, Gi Hyeon Gwon, Tack Hyun Jung, Joon Han, Yun Sik Oh, Doo Ung Kim, Chul Ho Noh
  • Patent number: 10116227
    Abstract: The present disclosure relates to a system and method for pulse driving. The system is configured to drive a multi-level converter, including: a main control module generating encoding information which contains driving information according to sampling information; a local control module electrically coupled to the multi-level converter to output control signals to the multi-level converter so as to control on and off of the at least M power switches in the multi-level converter; a first optical fiber coupled to the main control module and the local control module, wherein the local control module receives the encoding information output from the main control module via the first optical fiber and generates the control signals according to the encoding information.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: October 30, 2018
    Assignee: Delta Electronics (Shanghai) CO., LTD
    Inventors: Boyu Pu, Yi Zhang, Zheng Wang, Zhao Wang, Hailong Wang, Ming Wang
  • Patent number: 10116228
    Abstract: A converter includes: a first transistor (Q1) connected between a first output terminal (T1) and an input terminal (T0); a second transistor (Q2) connected between the input terminal (T0) and a second output terminal (T2); first and second diodes (D1, D2) connected in anti-parallel to the first and second transistors (Q1, Q2), respectively; and a bidirectional switch that is connected between the input terminal (T0) and a third output terminal (T3) and that includes third and fourth transistors (Q3, Q4) and third and fourth diodes (D3, D4). The first and second diodes (D1, D2) and the third and fourth transistors (Q3, Q4) each are formed of a wide band gap semiconductor. The third and fourth diodes (D3, D4) and the first and second transistors (Q1, Q2) each are formed of a semiconductor other than the wide band gap semiconductor.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: October 30, 2018
    Assignees: TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION, Mitsubishi Electric Corporation
    Inventors: Keisuke Ohnishi, Masahiro Kinoshita, Kimiyuki Koyanagi
  • Patent number: 10109422
    Abstract: A film capacitor includes: a capacitor element in which a metallikon electrode is formed at an end; a bus bar connected with the metallikon electrode; a case having a container for housing the capacitor element and the bus bar; a lid member which covers an opening of the container; and a heat conducting member disposed between the bus bar and the lid member. The lid member has a protrusion on a side facing the heat conducting member, the protrusion is in contact with the heat conducting member, and the heat conducting member is in contact with the bus bar.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: October 23, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yuki Koyama, Akihiro Ozaki
  • Patent number: 10084390
    Abstract: A power converter, short circuit protection circuit, and control method are disclosed herein. The power converter is configured to generate an output voltage and includes a semiconductor switch, a short circuit protection circuit, and a signal processing module. The semiconductor switch is configured to adjust the output voltage according to a driving signal. The short circuit protection circuit is configured to generate a short circuit protecting signal according to a control signal and a short circuit status of the semiconductor switch. The signal processing module is configured to generate the control signal and the driving signal according to a modulating signal, and to turn off the semiconductor switch according to the short circuit protecting signal. A delay duration is present between the modulating signal and the control signal, and the semiconductor switch is turned on during the delay duration.
    Type: Grant
    Filed: June 1, 2015
    Date of Patent: September 25, 2018
    Assignee: Delta Electronics (Shanghai) Co., Ltd.
    Inventors: Qing-Long Zhong, Yan Li, Hong-Jian Gan
  • Patent number: 9977455
    Abstract: A configurable impedance circuit includes a controller that senses a rectified voltage and generates a first and second control signals based on a comparison of the rectified voltage to at least one threshold voltage. The configurable impedance circuit also includes a filter for filtering the rectified voltage that couples a plurality of capacitors in series to the rectified voltage in a first configuration based on the first control signal and couples the plurality of capacitors in parallel to the rectified voltage in a second configuration based on the second control signal.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: May 22, 2018
    Assignee: Futurewei Technologies, Inc.
    Inventors: Heping Dai, Liming Ye, Dianbo Fu
  • Patent number: 9937806
    Abstract: A charging system (2) for a battery (3) has a first electrical terminal (4) for an AC voltage, a second electrical terminal (5) for a DC voltage and a converter (8). The converter (8) is designed to convert the AC voltage of the first terminal (4) into a DC voltage for charging the battery (3), and to convert a magnitude of a DC voltage that is passed from the second terminal (5) to the converter (8) in terms of the magnitude and to forward it to the battery (3). The converter (8) also is designed to convert the DC voltage of the battery (3) into an AC voltage for driving an electric motor (9).
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: April 10, 2018
    Assignee: Dr. Ing. h.c.F. Porsche Aktiengesellschaft
    Inventors: Daniel Spesser, Juergen Mittnacht
  • Patent number: 9911731
    Abstract: A power circuit is described that includes a semiconductor body having a common substrate and a Gallium Nitride (GaN) based substrate. The GaN based substrate includes one or more GaN devices adjacent to a front side of the common substrate. The common substrate is electrically coupled to a node of the power circuit. The node of the power circuit is at a particular potential that is equal to, or more negative than, a potential at one or more load terminals of the one or more GaN devices.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: March 6, 2018
    Assignee: Infineon Technologies Austria AG
    Inventor: Gerald Deboy
  • Patent number: 9853558
    Abstract: A high voltage direct current (HVDC) transmission system is provided. The high voltage direct current (HVDC) transmission system includes: an integrated measurement panel; and an HVDC transmission device, wherein the HVDC transmission device is configured to: receive, from the integrated measurement panel, compensation values for compensating for the voltage values output through the first to Nth potential transformers, compensate for the voltage values output through the first to Nth potential transformers by using the received compensation values, and measure the actual voltage values by using the compensated voltage values.
    Type: Grant
    Filed: April 21, 2015
    Date of Patent: December 26, 2017
    Assignee: LSIS CO., LTD.
    Inventor: Yong Kil Choi
  • Patent number: 9800176
    Abstract: The present application discloses a TNPC inverter device, comprising: a TNPC inverter module and a short circuit detecting module. The TNPC module at least comprises an inverting bridge arm and a bi-directional switching bridge arm. The inverting bridge arm comprises at least two switches connected in series; the bi-directional switching bridge arm comprises at least two switches. The short circuit detecting module mainly consists of two switch detecting unit corresponding to the two switches in the inverting bridge arm respectively. Increasing the voltage drop of the switches in the inverting bridge when a short circuit occurs in the TNPC module by some way, then it could realize the short circuit detecting module is able to detect all the paths of the short circuit in the TNPC module to simplify the peripheral circuit of the TNPC module in the TNPC inverter device.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: October 24, 2017
    Assignee: Delta Electronics (Shanghai) CO., LTD
    Inventors: Xibing Ding, Weiyi Feng, Weiqiang Zhang, Hongyang Wu
  • Patent number: 9796258
    Abstract: Plug-in hybrid electric vehicles where a multiport power-packet-switching converter provides fully bidirectional power transfer among any of an engine motor, a drive motor, a vehicle battery and/or supercapacitor, and a connection to grid.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: October 24, 2017
    Inventors: Paul Bundschuh, William C. Alexander
  • Patent number: 9788391
    Abstract: A solid state lighting panel sequentially energizes a plurality of LED lighting banks at the zero crossing points of the sinusoidal input line voltage. Each LED lighting bank is provided with a soft start circuit to ramp up the luminous intensity gradually. The energizing of one LED lighting bank at a time at zero cross, in combination with soft start ramp, keeps inrush spikes below the ultimate steady state operating current level. The lighting panel is further provided with line-in and line-out surge protection, along with a specific arrangement of terminals within a terminal block, the provision of surge protectors therein, the use of optically isolated solid state relays, and a plurality of well-placed circuit breakers to provide enhanced surge tolerance.
    Type: Grant
    Filed: December 5, 2016
    Date of Patent: October 10, 2017
    Assignee: Heartland, Inc.
    Inventor: Blake D. Redfield
  • Patent number: 9774322
    Abstract: The present disclosure presents a circuit, a method, and a system to drive a half-bridge switch using depletion (D) mode compound semiconductor (III-V) switching transistors for a DC-DC converter using at least one driver to drive the switches of the circuit. Also included is at least one charge pump electrically connected to a gate of the transistor, to maintain a voltage that holds the transistor in an off-state. The circuit includes AC coupling capacitors to level shift a voltage and realize fast transistor switching.
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: September 26, 2017
    Assignee: Sarda Technologies, Inc.
    Inventors: Bogdan M. Duduman, Anthony G. P. Marini, William R. Richards, Jr., William E. Batchelor, Greg J. Miller, John K. Fogg
  • Patent number: 9755540
    Abstract: A voltage conversion apparatus for providing power anywhere within, for example, a retail store environment is provided. The voltage conversion apparatus includes a mounting structure that can mount the apparatus near a ceiling of the retail store environment. Also, the voltage conversion apparatus includes a voltage converter for converting voltage from an existing high voltage power source. The voltage conversion apparatus is configured to connect to the existing high voltage power source, convert the voltage from the power source and deliver the converted voltage to any location within the retail store environment. The voltage conversion apparatus is also configured to be modular and can be quickly, easily and safely mounted to different locations of the retail store environment as needed.
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: September 5, 2017
    Assignee: Target Brands Inc.
    Inventors: Gary Nation, Doyle Trankel
  • Patent number: 9692315
    Abstract: An AC-AC converter device includes first and second AC input terminals and first and second AC output terminals. An input device is connected between an input node, a common node, a positive DC terminal and a negative DC terminal, wherein the input node is connected to the first AC input terminal via a first input inductor. An output device is connected between an output node, the positive DC terminal and the negative DC terminal, wherein the output node is connected to the first AC output terminal via an output inductor. A common device is connected between the common node, the positive DC terminal and the negative DC terminal, where the common node is connected to the second AC input terminal via a common inductor. A control device is provided for controlling the switches of the output device and the common device.
    Type: Grant
    Filed: January 7, 2014
    Date of Patent: June 27, 2017
    Assignee: Eltek AS
    Inventors: Nils Bäckman, Roberto Rojas
  • Patent number: 9647568
    Abstract: Methods and systems for bi-directional multi-port power conversion systems and applications are disclosed. In some sample embodiments, current-modulating power converters can be used to provide conversion between synchronous and asynchronous power. In some sample embodiments, current-modulating power converters can perform power conversion can be performed to and from three-phase AC with an active neutral line. In some sample embodiments, current-modulating power converters can convert between synchronous and asynchronous power and also support three-phase AC with active neutral.
    Type: Grant
    Filed: February 17, 2014
    Date of Patent: May 9, 2017
    Assignee: IDEAL POWER, INC.
    Inventors: Paul Bundschuh, William C. Alexander, Guy Michael Barron, Christopher Cobb, Paul Roush
  • Patent number: 9449957
    Abstract: According to an exemplary implementation, a power quad flat no-lead (PQFN) leadframe includes U-phase and W-phase power switches situated on the PQFN leadframe and respectively connected to a U-phase output strip and a W-phase output pad of the PQFN leadframe. The PQFN leadframe further includes a common integrated circuit (IC) including a driver circuit and a control circuit where the common IC is connected to the U-phase output strip and to the W-phase output pad of the PQFN leadframe. The PQFN leadframe can also include a V-phase power switch situated on the PQFN leadframe where the V-phase power switch is connected to a V-phase output strip of the PQFN leadframe.
    Type: Grant
    Filed: January 8, 2014
    Date of Patent: September 20, 2016
    Assignee: Infineon Technologies Americas Corp.
    Inventors: Dean Fernando, Roel Barbosa, Toshio Takahashi
  • Patent number: 9294009
    Abstract: A control circuit reduces switching loss by periodically stopping switching elements, and reduces the difference between the time for which positive switching elements are in on state and the time for which negative switching elements are in on state. The control circuit includes a command value signal generator generating command value signals Xu1, Xv1, and Xw1 from line voltage command value signals Xuv, Xvw, and Xwu, and includes a PWM signal generator generating PWM signals by the command value signals Xu1, Xv1, and Xw1. The command value signals Xu1, Xv1, and Xw1 are continuously at “0” for a predetermined period, and are continuously at “2” for another period. This enables reducing the difference between the period for which the PWM signals are low and the period for which they are high.
    Type: Grant
    Filed: March 7, 2012
    Date of Patent: March 22, 2016
    Assignee: DAIHEN Corporation
    Inventors: Nobuyuki Hattori, Akihiro Ohori, Hiroki Munechika
  • Patent number: 9281755
    Abstract: An inverter for converting a direct current flowing between two input lines into an alternating current flowing between two output lines includes first and second series circuits each including two switches configured to switch at a high frequency and of an inductance connected between the switches, wherein the two inductances are magnetically coupled. The inverter further includes diodes which lead from opposite sides of the inductances to a first intermediate point and diodes leading from a second intermediate point to the opposite sides of the inductances, and an unfolding circuit which forwards a direct current flowing between the intermediate points and consisting of sine-shaped half-waves to the output lines with a polarity changing half-wave by half-wave.
    Type: Grant
    Filed: February 10, 2014
    Date of Patent: March 8, 2016
    Assignee: SMA SOLAR TECHNOLOGY AG
    Inventors: Mehmet Kazanbas, Christian Noeding, Peter Zacharias
  • Patent number: 9190846
    Abstract: A power quality management system includes a plurality of phase balancers, each phase balancer including single phase converters coupled between two phase lines and a plurality of controllers to control the plurality of phase balancers. Each controller includes a voltage unbalance detection module to detect amount of voltage unbalance in a plurality of phase lines and a voltage unbalance compensation module to generate reference current commands for each of the single phase converters to reduce the voltage unbalance.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: November 17, 2015
    Assignee: General Electric Company
    Inventors: Edward Earl Eiland, Owen Jannis Samuel Schelenz, Nitin Nandkumar Joshi
  • Patent number: 9093921
    Abstract: A substation has a converter comprising a first set (S1) of series connected converter valve elements provided between a first (V1) and a second (V2) potential, where the absolute value of the second potential is higher than the absolute value of the first potential, and a second set (S2) of converter valve elements, comprising at least one converter valve element, provided between the second and a third potential (V3), where the absolute value of the third potential is higher than the absolute value of the second potential and all converter valve elements of the second set are placed inside one or more casings (28) placed on elongated post-like insulation (24), where the potential of the end of the post-like insulation on which the casings are placed is in a range between the second and the third potential, while the other end of the post like insulation is at ground potential.
    Type: Grant
    Filed: February 2, 2010
    Date of Patent: July 28, 2015
    Assignee: ABB TECHNOLOGY AG
    Inventors: Gunnar Flisberg, Dong Wu, Per-Olof Hedblad
  • Patent number: 9071162
    Abstract: An AC-AC converter includes a first semiconductor switch series circuit, a second semiconductor switch series circuit, and a capacitor series circuit are connected in parallel. A first inductor is connected between one end of an alternating current input and a series connection point of the first semiconductor switch series circuit. A bidirectional switch is connected between the one end of the alternating current input and a series connection point of the second semiconductor switch series circuit. A second inductor is connected between the series connection point of the second semiconductor switch series circuit and one end of an alternating current output. A series connection point of the capacitor series circuit is connected to the other end of the alternating current input and the other end of the alternating current output.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: June 30, 2015
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventor: Ryuji Yamada
  • Publication number: 20150146463
    Abstract: To be able to maintain the power supply of an inverter which is supplied with power from a supply network even in the event of a power failure, it is proposed according to the invention that in the event of a power failure, the electric power for the power supply (2) of the inverter (1) is obtained from a throttle (7) of the inverter (1) at the output end via an auxiliary winding (13).
    Type: Application
    Filed: May 24, 2013
    Publication date: May 28, 2015
    Applicant: FRONIUS INTERNATIONAL GmbH
    Inventors: Joachim Danmayr, Stefan Bloechl, Andreas Luger, Dietmar Striegl, Martin Moertenhuber
  • Publication number: 20150138858
    Abstract: A driving apparatus of the present disclosure includes a coil including a second terminal connected to a control terminal of a switching element, a charging switch connected between a first potential line and a first terminal of the coil, a clamp switch connected between the first potential line and the control terminal of the switching element, a charging diode connected between a second potential line and the first terminal of the coil, and a control circuit that outputs a charging control signal for turning on the charging switch and for turning off the charging switch before a potential of the control terminal of the switching element reaches the first potential and a clamp control signal for turning on the clamp switch after the charging switch is turned on.
    Type: Application
    Filed: November 1, 2014
    Publication date: May 21, 2015
    Inventors: FUMITO KUSAMA, HAJIME HIDA, SHUN KAZAMA, KENJI HANAMURA
  • Patent number: 9035350
    Abstract: Methods, systems, circuits, and devices for power-packet-switching power converters using bidirectional bipolar transistors (BTRANs) for switching. Four-terminal three-layer BTRANs provide substantially identical operation in either direction with forward voltages of less than a diode drop. BTRANs are fully symmetric merged double-base bidirectional bipolar opposite-faced devices which operate under conditions of high non-equilibrium carrier concentration, and which can have surprising synergies when used as bidirectional switches for power-packet-switching power converters. BTRANs are driven into a state of high carrier concentration, making the on-state voltage drop very low.
    Type: Grant
    Filed: September 8, 2014
    Date of Patent: May 19, 2015
    Assignee: Ideal Power Inc.
    Inventors: Richard A. Blanchard, William C. Alexander
  • Publication number: 20150131348
    Abstract: A reversible matrix converter circuit is provided with n levels per phase including n conversion arms exhibiting on one side n ends for generating or receiving respectively n intermediate DC voltage levels, and exhibiting on another side n ends linked at a common point of AC signal input or output. The circuit includes: —two external arms linked respectively to the highest level of positive voltage and to the lowest level of negative voltage, these two external arms each having a single IGBT transistor or two power transistors, linked by their emitter, —two IGBT power transistors, linked in series by their emitter on each of the n-1 internal arms, —filtering capacitors disposed respectively between the n intermediate voltage levels.
    Type: Application
    Filed: June 18, 2013
    Publication date: May 14, 2015
    Inventor: Ignace Rasoanarivo
  • Patent number: 9029909
    Abstract: Methods, systems, circuits, and devices for power-packet-switching power converters using bidirectional bipolar transistors (BTRANs) for switching. Four-terminal three-layer BTRANs provide substantially identical operation in either direction with forward voltages of less than a diode drop. BTRANs are fully symmetric merged double-base bidirectional bipolar opposite-faced devices which operate under conditions of high non-equilibrium carrier concentration, and which can have surprising synergies when used as bidirectional switches for power-packet-switching power converters. BTRANs are driven into a state of high carrier concentration, making the on-state voltage drop very low.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: May 12, 2015
    Assignee: Ideal Power Inc.
    Inventors: Richard A. Blanchard, William C. Alexander
  • Publication number: 20150124503
    Abstract: A power converter according to an embodiment includes a power conversion unit and a controller. The power conversion unit includes a plurality of first bidirectional switches that are disposed between a plurality of DC side terminals and a plurality of AC side terminals, and a second bidirectional switch and a reactor that are disposed between the AC side terminals. The controller keeps the second bidirectional switch ON in any one or both of a free-wheeling mode in a step-down power conversion from DC power into AC power, and an energy storing mode in which electric energy is stored in the reactor in a step-up power conversion from the AC power to the DC power.
    Type: Application
    Filed: January 14, 2015
    Publication date: May 7, 2015
    Applicant: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Tetsumi NARITA, Katsutoshi YAMANAKA
  • Publication number: 20150085546
    Abstract: A multi-level converter includes first and second DC buses, a plurality of transistors coupled in series between the first and second DC buses and a clamp circuit configured to clamp a node joining a first transistor and a second transistor of the plurality of transistors. The converter further includes a bias circuit coupled to the clamped node, which may reduce or prevent voltage stress on the transistors. Related methods of operation are also described.
    Type: Application
    Filed: September 25, 2013
    Publication date: March 26, 2015
    Applicant: Eaton Corporation
    Inventors: George William Oughton, JR., Haidong Yu
  • Patent number: 8987999
    Abstract: The present application discloses a LED driver including: a first and a second auxiliary windings connected in series with each other; a first rectifying device coupled with a terminal of the first auxiliary winding while the other terminal is coupled with the second auxiliary winding; a second rectifying device coupled with a terminal of the second auxiliary winding; a first voltage regulator coupled with the first rectifying device; an unidirectional conducting device having a positive and a negative terminals; and a DC output terminal coupled with the negative terminal of the unidirectional conducting device and configured to provide required DC electricity to a control circuit in the LED driver. The LED driver can guarantee that Vcc voltages provided under a heavy or light load state can always meet the DC power supplying requirements of respective control devices in the driver and meanwhile losses can be reduced.
    Type: Grant
    Filed: July 9, 2013
    Date of Patent: March 24, 2015
    Assignee: Delta Electronics, Inc.
    Inventors: Xinghua Zhang, Linwei Chen
  • Publication number: 20150078049
    Abstract: The disclosure relates to an electric power conversion apparatus, and capable of determining a minimum output voltage of a boost converter based on a voltage of the grid, and comparing the minimum output voltage of the converter with an input voltage of the converter, and controlling the operation of the converter based on the comparison result, thereby reducing the unnecessary operation and switching loss of the converter, the electric power conversion apparatus according to the invention comprises a converter; and a control unit configured to detect a grid voltage to determine a minimum output voltage of the converter based on the grid voltage, and control the operation of the converter based on an input voltage of the converter and the determined minimum output voltage.
    Type: Application
    Filed: September 15, 2014
    Publication date: March 19, 2015
    Applicants: SNU R&DB FOUNDATION, LSIS CO., LTD.
    Inventors: Anno YOO, Jung Ik HA, Ho Joon SHIN, Kwon Yub HYUNG
  • Patent number: 8976556
    Abstract: Inverter is modulated based on first, second, and third switching states determined according to a reference vector represented as a sum of a remainder vector connecting the reference vector with a first vertex of a modulation triangle and a set of vertex vectors connecting a center vertex of space vector diagram with the first vertex. A first switching state of the inverter at the first vertex is determined based on angles of vertex vectors in the set. A second switching state of the inverter at a second vertex of the modulation triangle and a third switching state of the inverter at a third vertex of the modulation triangle are determined based on the first switching state and the remainder vector.
    Type: Grant
    Filed: July 12, 2012
    Date of Patent: March 10, 2015
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Koon Hoo Teo, Yi Deng
  • Patent number: 8975847
    Abstract: A power conversion device includes a first capacitor connected in parallel to a direct-current power supply, plural power converters that drive plural synchronous machines, a second capacitor connected in parallel to a direct-current side of power converters, a switching circuit inserted between the first and second capacitors, a switch-start instruction unit that controls starting of an operation of the power converters, and a control unit that controls the power converters based on a motor velocity and a voltage of the first capacitor. The switch-start instruction unit turns off the switching circuit while the power converters stop, turns off the switching circuit until a terminal voltage of each of the synchronous machines becomes equal to a predetermined value when each of the power converters starts operating, and turns on the switching circuit when the terminal voltage of each synchronous machine becomes equal to or smaller than the predetermined value.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: March 10, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventor: Masaki Kono
  • Publication number: 20150062989
    Abstract: A low profile power converter structure is provide wherein volume is reduced and power density is increased to approach 1 KW/in3 by at least one of forming an inductor as a body of magnetic material embedded in a substrate formed by a plurality of printed circuit board (PCB) lamina and forming inductor windings of PCB cladding and vias which may be of any desired number of turns and may include inversely coupled windings and which provide a lateral flux path, forming the body of magnetic material from high aspect ratio flakes of magnetic material which are aligned with the inductor magnetic field in an insulating organic binder and hot-pressed and providing a four-layer architecture comprising two layers of PCB lamina including the embedded body of magnetic material, a shield layer and an additional layer of PCB lamina, including cladding for supporting and connecting a switching circuit, a capacitor and the inductor.
    Type: Application
    Filed: February 11, 2014
    Publication date: March 5, 2015
    Applicant: Virginia Tech Intellectual Properties, Inc.
    Inventors: Yipeng Su, Qiang Li, Fred C. Lee, Wenli Zhang
  • Publication number: 20150062990
    Abstract: The present invention relates to a circuit arrangement for electrical installations for converting and adapting a DC voltage of a voltage source, more particularly for a solar inverter of a photovoltaic installation, having an electrical output, which can be coupled to an inverter, wherein, at the electrical output, a potential in a positive branch of an intermediate circuit of the electrical installation can be increased in such a way that an output potential of a negative pole of the voltage source assumes a value greater than the potential of the negative pole before the increase, or the potential in a negative branch of the intermediate circuit of the electrical installation can be reduced in such a way that an output potential of a positive pole of the voltage source assumes a value lower than the potential of the positive pole before the reduction, and having a compensation device designed for compensating for the electrical power between the positive branch of the intermediate circuit of the electrical
    Type: Application
    Filed: March 8, 2013
    Publication date: March 5, 2015
    Inventors: Alexey Dobrenko, Marco Schilli
  • Publication number: 20150049530
    Abstract: A power electronic converter (30), for connecting AC and DC networks (46,44) and transferring power therebetween, comprises: first and second DC terminals (32,34) defining a DC link for connection to a DC network (44); wherein, in use, the DC link has a reversible DC link voltage applied thereacross; at least one converter limb (36) extending between the first and second DC terminals (32,34) and having first and second limb portions (38,40) separated by an AC terminal (42) for connection to an AC network (46), each limb portion (38,40) including at least one rationalised module (52) having first and second sets of series-connected current flow control elements (54) connected in parallel with at least one energy storage device (56), each set of current flow control elements (54) including a primary active switching element to selectively direct current through the energy storage device (56) and a primary passive current check element to limit current flow through the rationalised module (52) to a single direct
    Type: Application
    Filed: March 20, 2013
    Publication date: February 19, 2015
    Inventors: David Reginald Trainer, Nnamdi Okaeme
  • Publication number: 20150043259
    Abstract: A method for operating an N-level K-phase electrical power converter, wherein N is greater than or equal to 3 and K is greater than or equal to 1. The method includes: providing a plurality of N connection points that each correspond to a definable potential, wherein a first connection point corresponds to a first potential, a second connection point corresponds to a second potential, and at least one further connection point corresponds to a further potential which is lower than the first and greater than the second potential; providing a plurality of K output connections that are each selectively connected to a respective one of the connection points via at least one switching device; and having at least one current flowing into the at least one further connection point.
    Type: Application
    Filed: August 6, 2014
    Publication date: February 12, 2015
    Inventors: Martin Janssen, Niels Weitendorf
  • Publication number: 20150029769
    Abstract: Methods, systems, circuits, and devices for power-packet-switching power converters using bidirectional bipolar transistors (BTRANs) for switching. Four-terminal three-layer BTRANs provide substantially identical operation in either direction with forward voltages of less than a diode drop. BTRANs are fully symmetric merged double-base bidirectional bipolar opposite-faced devices which operate under conditions of high non-equilibrium carrier concentration, and which can have surprising synergies when used as bidirectional switches for power-packet-switching power converters. BTRANs are driven into a state of high carrier concentration, making the on-state voltage drop very low.
    Type: Application
    Filed: October 15, 2014
    Publication date: January 29, 2015
    Applicant: IDEAL POWER, INC.
    Inventors: Richard A. Blanchard, William C. Alexander
  • Patent number: 8929111
    Abstract: A multi-level converter includes a plurality of alternating current (AC) terminals connected to an AC source or load, at least three direct current (DC) terminals connected to a multi-level DC source or load, and a plurality of solid-state switches that are selectively turned On and Off to connect each of the plurality of AC terminals to one of the DC terminals. A controller provides PWM control signals to the solid-state switches. The controller utilizes space vector modulation to organize the various switching state configurations, and increments the switching states during a first half of the switching period and decrements the switching states during a second half of the switching period to center-align the PWM signals provided about the center of the switching period. The switching states utilized during the switching period dictate the PWM control signals provided to the plurality of switches employed in the three-level converter.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: January 6, 2015
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Adam Michael White