Plural Converters Patents (Class 307/82)
  • Patent number: 11398780
    Abstract: A direct current-to-direct current (DC-DC) converter providing multiple operation modes includes a buck power stage configured to lower an input voltage, a boost power stage configured to increase the input voltage, and a multi-mode controller configured to control the buck power stage and the boost power stage, wherein the multi-mode controller is configured to generate a signal to control the buck power stage and the boost power stage according to the input voltage and an output voltage, and control the buck power stage and the boost power stage using the signal.
    Type: Grant
    Filed: June 16, 2020
    Date of Patent: July 26, 2022
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Young Kyun Cho, Heon Kook Kwon, Kwang Seon Kim, Tae Joong Kim, Kwangchun Lee, Jung Nam Lee, Jae Ho Jung
  • Patent number: 11394235
    Abstract: A power conversion system is to be used with an energy source. A plurality of conversion units are used in series via their output with the energy source output. A positive pin of a first converter and the negative pin of a last converter of the series are for connection to an output (14, 16) of the energy source, and for each two neighboring converters in this series a negative pin of an upstream converter is connected to a positive pin of a downstream converter which both pins are decoupled from the energy source except for the positive pin of the first converter and the negative pin of the last converter. A master monitor unit is adapted to monitor the output power of the energy source and to control the input voltage of each conversion unit synchronously in dependence on the monitored output power. In this way, a set of conversion units are configured, with the conversion units sharing the output from the energy source. This provides a scalable system.
    Type: Grant
    Filed: May 1, 2018
    Date of Patent: July 19, 2022
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Goutam Maji, Priya Ranjan Mishra
  • Patent number: 11387659
    Abstract: Aspects of the present disclosure provide for a method. In at least some examples, the method includes controlling gate terminals of one or more transistors of a charger to operate the charger in a buck-boost mode of operation to generate a system voltage based on a bus voltage by performing power conversion through switching, determining that the bus voltage is greater in value than a voltage of a battery coupled to the charger, and controlling the gate terminals of the one or more transistors of the charger to operate the charger in a pass-through mode of operation to generate the system voltage based on the bus voltage without performing power conversion.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: July 12, 2022
    Assignee: Texas Instruments Incorporated
    Inventors: Yipeng Su, Qiong M. Li, Jing Ye, Siew Kuok Hoon
  • Patent number: 11342755
    Abstract: A physical address determining method, apparatus, and device, and a storage medium, and belongs to the field of solar power generation, includes: controlling at least two slave nodes to sequentially start up, and detecting a change status of an input voltage of the master node; dividing a photovoltaic power generation system into a plurality of photovoltaic strings; and for each candidate photovoltaic string, controlling any slave node located in the candidate photovoltaic string to start up and other slave nodes to shut down, and using the physical address as a physical address of the candidate photovoltaic string. This disclosure provides a manner of automatically determining a physical address of a photovoltaic string, thereby implementing photovoltaic-string locating and expanding a system function range. When an anomaly occurs, the anomaly can be eliminated in a timely manner, thereby improving system stability.
    Type: Grant
    Filed: May 6, 2020
    Date of Patent: May 24, 2022
    Assignee: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.
    Inventors: Chengfeng Jiang, Chengyong Liu, Qingyuan Wang
  • Patent number: 11336113
    Abstract: An electric power system is disclosed herein. The electric power system may manage and store electric power and provide uninterrupted electric power, derived from a plurality of electric power sources, to an electric load. The electric power system may contain an energy storage unit and generator assembly. The electric power system may connect to a power grid and renewable energy sources, and may charge the energy storage unit using the power grid, renewable energy sources, and/or generator assembly. The electric power system may be configured to determine load power usage and environmental factors to automatically and continuously modify a charging protocol to, for example, provide high efficiency and/or self-sufficiency from the power grid. The electric power system may operate entirely off-grid and may provide electricity to the load without interruption to power.
    Type: Grant
    Filed: September 4, 2020
    Date of Patent: May 17, 2022
    Assignee: Blue Power Systems, Inc.
    Inventors: Ramon A. Caamano, Gregory P. Miller
  • Patent number: 11329573
    Abstract: A power conversion system according to the present disclosure includes a plurality of power converters for performing power conversion on AC power and is connected to a power grid of multi-phase power that is a combination of multiple alternating current sources with mutually different phases. Each of the plurality of power converters includes a power converter circuit, a setting unit, and a control circuit. The power converter circuit performs power conversion between either DC power or AC power and AC power supplied from any of the multiple alternating current sources. The setting unit selects one of the multiple alternating current sources as a target of the power conversion to be performed by the power converter circuit. The control circuit controls operation of the power converter circuit in accordance with selection made by the setting unit.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: May 10, 2022
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Kenichi Asanuma, Makoto Ozone
  • Patent number: 11303101
    Abstract: A device for preparing a high-voltage direct current transmission includes a first busbar which is connectable to a plurality of first energy generation or consumer units and a second busbar which is connectable to a plurality of second energy generation or consumer units. A transformer system includes a first primary coil which is connectable to the first busbar, a second primary coil which is connectable to the second busbar, and a secondary coil system which is inductively coupled to the first primary coil and the second primary coil to transform power routed on the first and second busbars to increased AC voltage. A converter system is connected to the secondary coil system to convert the increased AC voltage into DC voltage for the high-voltage direct current transmission. A converter station and an energy providing system are also provided.
    Type: Grant
    Filed: June 11, 2020
    Date of Patent: April 12, 2022
    Assignee: Siemens Energy Global GmbH & Co. KG
    Inventors: Alexander Broy, Matthias Foehr, Gerald Franz Giering, Ulrich Halfmann, Marcus Zeller
  • Patent number: 11303134
    Abstract: The invention relates to a grid synchroniser for connecting an AC output of a power converter to the AC grid mains. In one aspect the invention provides a grid synchroniser comprising an inverter controller to control an AC output of the inverter, the controller including a receiver to receive grid data from a grid sensor location remote from said inverter. In another aspect we describe techniques for rapid removal of charge from a control terminal of a power switching device such as a MOSFET, IGBT or Thyristor using a particular driver circuit.
    Type: Grant
    Filed: January 25, 2021
    Date of Patent: April 12, 2022
    Assignee: Tesla, Inc.
    Inventors: Gehan Anil Joseph Amaratunga, Lesley Chisenga, Andrabadu Viraj
  • Patent number: 11303221
    Abstract: Disclosed is a drive system and its operation for multiple DC-AC inverters working in parallel, for applications such as off-grid solar energy harvesting, which enables a stable operation under various load conditions. The disclosed drive system offers voltage and frequency synchronized sine wave output from each of the inverters, enabling stable operation of the entire system under differing load conditions.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: April 12, 2022
    Assignee: Kripya LLC
    Inventors: Vilakkudi G. Veeraraghavan, Ramarao Ananathakrishnan, Murali Thangaraj, Asif Ismail
  • Patent number: 11283369
    Abstract: A control device for controlling a power source connected to an alternating-current (AC) power system includes: a frequency control unit that controls a frequency of the power source operating in a constant-voltage constant-frequency control scheme; a power calculation unit that calculates, when the frequency control unit varies a frequency of the power source, a variation of an effective power output from the power source; an arithmetic unit that calculates a frequency characteristics constant of the AC power system, based on a variation of the frequency of the power source and the variation of the effective power output from the power source; and a selection unit that selects a control scheme for the power source, based on the frequency characteristics constant of the AC power system.
    Type: Grant
    Filed: June 7, 2018
    Date of Patent: March 22, 2022
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shuhei Fujiwara, Yoshiyuki Kono, Kazuyori Tahata, Masashi Shigemitsu, Shota Midorikawa
  • Patent number: 11264896
    Abstract: A two-phase boost converter is provided. The converter includes a first boost converter coupled between an input node and a common node; and a second boost converter coupled between the input node and an output node, wherein the second boost converter comprises: a first transistor coupled between ground and an internal node, an inductor coupled between the input node and the internal node, a capacitor coupled between the internal node and the common node, and a second transistor coupled between the common node and the output node.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: March 1, 2022
    Assignee: Kinetic Technologies
    Inventor: Haifeng Fan
  • Patent number: 11264947
    Abstract: A method for testing a photovoltaic panel connected to an electronic module. The electronic module includes an input attached to the photovoltaic panel and a power output. The method activates a bypass to the electronic module. The bypass provides a low impedance path between the input and the output of the electronic module. A current is injected into the electronic module thereby compensating for the presence of the electronic module during the testing. The current may be previously determined by measuring a circuit parameter of the electronic module. The circuit parameter may be impedance, inductance, resistance or capacitance.
    Type: Grant
    Filed: June 6, 2019
    Date of Patent: March 1, 2022
    Assignee: Solaredge Technologies Ltd.
    Inventors: Meir Adest, Guy Sella, Lior Handelsman, Yoav Galin, Amir Fishelov, Meir Gazit, Tzachi Glovinsky, Yaron Binder
  • Patent number: 11251618
    Abstract: Apparatus and method for controlling reactive power. In one embodiment, the apparatus comprises a bidirectional power converter comprising a switched mode cycloconverter for generating AC power having a desired amount of a reactive power component.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: February 15, 2022
    Assignee: Enphase Energy, Inc.
    Inventor: Michael J. Harrison
  • Patent number: 11239766
    Abstract: If current path is switched via switching, voltage overshoot exceeding the device breakdown voltage may be generated. A flying capacitor circuit is provided, having a plurality of switching devices cascade-connected on a first surface of a substrate; a plurality of rectifier devices cascade-connected on a second surface of the substrate; and at least one capacitor provided in a wiring connecting main terminals of a switching device and a rectifier device that are associated with each other and included in the plurality of switching devices and the plurality of rectifier devices; and at least part of the wiring runs sandwiching the substrate in parallel.
    Type: Grant
    Filed: February 25, 2020
    Date of Patent: February 1, 2022
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventors: Satoru Fujita, Yuto Matsui, Yusuke Onishi
  • Patent number: 11233398
    Abstract: When the AC voltage effective value at an interconnection point is higher than a first threshold voltage, a solar-panel power conversion device controls an output of reactive power so that the voltage at the interconnection point matches a first target effective voltage. When the power generated from an energy creation apparatus is higher than a first reference power and the AC voltage effective value at the interconnection point is higher than a second threshold voltage, then a storage-battery power conversion device controls an output of reactive power so that the voltage at the interconnection point matches a second target effective voltage.
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: January 25, 2022
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Sadayuki Inoue, Takahiro Kato
  • Patent number: 11228178
    Abstract: A photovoltaic power plant system for power generation, comprising one or more photovoltaic clusters and one or more modular multilevel converters. Each photovoltaic cluster includes a number of photovoltaic strings connected to one or more MPPT DC/DC, converters connected to a common LVDC, bus. Each photovoltaic cluster includes a DC/DC converter including an input connected to the LVDC bus, and an output connected to a MVDC collection grid. Each of the one or more modular multilevel converters includes an input connected to the one or more photovoltaic clusters via the MVDC collection grid and an output connected to a transmission grid.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: January 18, 2022
    Assignee: Marici Holdings The Netherlands B.V.
    Inventors: Antonis Marinopoulos, Jan Svensson, Silverio Alvarez, Stephan Schnez
  • Patent number: 11223241
    Abstract: One aspect of the present invention is an electric power transmission device that periodically shifts a frequency of a magnetic field to a plurality of predetermined shift values and that transmits electric power by utilizing the magnetic field. The device includes a plurality of power transmitters and an instructor. Each of the plurality of power transmitters configured to generate a magnetic field. The instructor outputs an instruction signal indicating a shift value to be shifted to each of the power transmitters to instruct the shift value to be shifted to each of the power transmitters. Further, the instructor instructs the shift value to be shifted in such a manner that at least a part of the magnetic fields of the plurality of power transmitters are different in frequency at the same time point.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: January 11, 2022
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventor: Koji Ogura
  • Patent number: 11214208
    Abstract: A traction voltage system in a vehicle includes a junction box with multiple connectors for electrical components, which components include electrical supplies and electrical loads, and an electronic control unit arranged to monitor current flowing flow to or from the components. A controller or a circuit breaker is arranged to control the supply of power to each respective component, and at least all but one of the connectors are provided with a current sensor arranged to transmit a signal representing detected current values to the electronic control unit. The electronic control unit is arranged to determine an instantaneous current value flowing to or from each component, to compare the instantaneous current value with a predetermined limit value for each connector, and to take action in response to the comparison. A method for controlling the traction voltage system is also provided.
    Type: Grant
    Filed: November 28, 2013
    Date of Patent: January 4, 2022
    Assignee: VOLVO TRUCK CORPORATION
    Inventors: Jerker Lennevi, Tobias Smidebrant
  • Patent number: 11198405
    Abstract: A configuration with which, even if the supply of power from a power supply portion ceases, the power from another power supply source can be instantly supplied to a power supply target is more easily achieved. In a backup circuit, a control unit causes a second voltage conversion portion to perform a voltage conversion operation in response to satisfaction of a predetermined first backup condition, and a power supply portion-side conductive path and an electricity storage portion-side conductive path are electrically connected to each other via a resistive portion when the control unit is causing the second voltage conversion portion to perform the voltage conversion operation. Furthermore, the control unit causes the first voltage conversion portion to perform a second operation in response to a predetermined second backup condition being satisfied when the control unit is causing the second voltage conversion portion to perform the voltage conversion operation.
    Type: Grant
    Filed: April 9, 2019
    Date of Patent: December 14, 2021
    Assignees: AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.
    Inventors: Kazushi Shimamoto, Yuuki Sugisawa
  • Patent number: 11192451
    Abstract: A method for managing energy to a transport climate control system from a vehicle electrical system is provided. The vehicle electrical system includes a vehicle power network and an auxiliary power network connected to a transport climate control load network via a DC regulated bus. The method includes monitoring a vehicle voltage of the vehicle power network and determining whether the vehicle power network requires holdover assistance based on the vehicle voltage. Also, the method includes the bus sending vehicle power energy generated by the vehicle power network to the transport climate control load network without assistance of the auxiliary power network when the controller determines that the vehicle power network has sufficient power capacity available, and the bus sending the vehicle power energy and auxiliary power energy stored by the auxiliary power network to the transport climate control load network when the controller determines that the vehicle power network requires holdover assistance.
    Type: Grant
    Filed: September 18, 2019
    Date of Patent: December 7, 2021
    Assignee: Thermo King Corporation
    Inventors: Ryan Wayne Schumacher, Jordi Garcia Farran, Joan Vila, Terence O'Shea, Frantisek Zebra, Vikram Madineni
  • Patent number: 11190020
    Abstract: A DC voltage coordination control method is applied to a multi-terminal VSC-HVDC power transmission system or a VSC-HVDC power grid system. When a lower-level control is used in the active power control mode, the active power reference value of the converter is generated according to the converter DC voltage and the converter DC voltage active power curve; it also includes an upper-level control to adjust the control mode and active power setting value of the lower-level control to ensure the steady-state performance of the system. This method has low dependence on communication, avoids the problem that the fixed slope and margin cannot meet all operating conditions, and is suitable for large-scale VSC-HVDC systems, and has scalability.
    Type: Grant
    Filed: May 7, 2018
    Date of Patent: November 30, 2021
    Assignees: NR ELECTRIC CO., LTD, NR ENGINEERING CO., LTD
    Inventors: Nannan Wang, Yu Lu, Yunlong Dong, Jie Tian, Dongming Cao, Haiying Li, Chongxue Jiang, Jiacheng Wang
  • Patent number: 11183969
    Abstract: A method for testing a photovoltaic panel connected to an electronic module. The electronic module includes an input attached to the photovoltaic panel and a power output. The method activates a bypass to the electronic module. The bypass provides a low impedance path between the input and the output of the electronic module. A current is injected into the electronic module thereby compensating for the presence of the electronic module during the testing. The current may be previously determined by measuring a circuit parameter of the electronic module. The circuit parameter may be impedance, inductance, resistance or capacitance.
    Type: Grant
    Filed: February 6, 2019
    Date of Patent: November 23, 2021
    Assignee: Solaredge Technologies Ltd.
    Inventors: Meir Adest, Guy Sella, Lior Handelsman, Yoav Galin, Amir Fishelov, Meir Gazit, Tzachi Glovinsky, Yaron Binder
  • Patent number: 11171490
    Abstract: A cascading regulation system connected to a number of serially connected power sources and uses multiple regulators having different cutoff voltages to provide an output for the local power consumption unit. Each of the regulators is connected to a subset of serially connected power sources and so configured that if the voltage generated at the lowest tap is no longer sufficient for a stable supply to the local power consumption unit, the next higher regulator takes over, and the output voltage drops in small steps reflective of that takeover of the next higher tap. When the voltage generated across a subsection grows, a lower connected tap may take over again, producing a slightly higher output voltage for the local power consumption unit. The cutover steps are chosen such that the output voltage range matches the range given as the acceptable input range for the local power consumption unit.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: November 9, 2021
    Assignee: Tigo Energy, Inc.
    Inventors: Shmuel Arditi, Daniel Eizips, Mordechay Avrutsky
  • Patent number: 11171489
    Abstract: A control method for a string inverter, comprising: in a current/voltage (IV) curve scanning process, controlling an output power of an inverter circuit to be a specified power reference value, and controlling an output voltage of each non-IV curve scanning direct current (DC) to DC (DC-DC) circuit to be a specified voltage reference value, where the specified power reference value is less than or equal to a sum of input powers of all non-IV curve scanning DC-DC circuits the before IV curve scanning process, and where the specified voltage reference value is greater than or equal to a preset percentage of a maximum value in open-circuit voltages, before the IV curve scanning process, of photovoltaic strings connected to all IV curve scanning DC-DC circuits.
    Type: Grant
    Filed: October 19, 2020
    Date of Patent: November 9, 2021
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Xinyu Yu, Kai Xin, Fangcheng Liu
  • Patent number: 11169556
    Abstract: A first generator produces a first signal that is supplied to an energy storage circuit. Energy transfer circuitry coupled to the energy storage circuit transfers energy stored in the energy storage circuit to an output node. A driver circuit coupled to the energy transfer circuitry switches the energy transfer circuitry between a state where energy from the first signal is stored in the energy storage circuit and a state where energy stored in the energy storage circuit section is delivered to the output node. A voltage at the energy storage circuit varies between an upper value and a lower value around a voltage setting point. A second generator, which is a scaled-down replica of the first generator, produces a second signal that is indicative of an open-circuit voltage of the first generator. The driver circuit uses the second signal to set the voltage setting point.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: November 9, 2021
    Assignee: STMicroelectronics S.r.l.
    Inventor: Roberto La Rosa
  • Patent number: 11164529
    Abstract: A power supply includes a boost circuit having a first boost circuit configured to output a first driving voltage to be supplied to the display panel by stepping unit an input voltage and a second boost circuit configured to output a second driving voltage to be supplied to the display panel by stepping down the input voltage, and a correction circuit configured to output a correction signal based on a result obtained by sensing the input voltage, and controls output efficiency of the boost circuit based on the input voltage and current sensed from the display panel.
    Type: Grant
    Filed: May 28, 2020
    Date of Patent: November 2, 2021
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Nak-Yoon Kim, Ji-Su Kim, Hong-Soon Kim
  • Patent number: 11152853
    Abstract: A power device includes a first conversion module and a second conversion module. The first conversion module includes a first conversion unit and receives a first divided voltage of a bus voltage. The second conversion module includes a cascade conversion circuit with a second conversion unit and a third conversion unit. The input terminal of the second conversion module and the input terminal of the first conversion module are connected with each other in series. The input terminal of the second conversion module receives a second divided voltage of the bus voltage. The output terminal of the second conversion module and the output terminal of the first conversion module are electrically connected with each other in parallel so as to provide an output voltage to a load. The third conversion unit detects the output voltage to control the output voltage stable.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: October 19, 2021
    Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
    Inventors: Ming Li, Yiqing Ye, Chengshang Yang
  • Patent number: 11152796
    Abstract: A method and system for generating inverted electrical signals includes a first string of batteries connected in series, each battery having a half-bridge circuit connected in parallel and each having upper switch and lower switches. A first H-bridge circuit is connected in parallel with the first string of batteries, and a triangle wave generator generates a plurality of triangle wave signals at a given amplitude and carrier frequency. The plurality of triangle wave signals have individual triangle wave signals phase-shifted from one another. A modulation wave generator generates a modulation signal at a modulation amplitude and at twice a fundamental frequency that is less than the carrier frequency. A controller compares an instantaneous magnitude of the individual triangle wave signals to an instantaneous magnitude of the modulation signal, and outputs commands to the upper switch of a respective half-bridge circuit based on the comparison.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: October 19, 2021
    Assignee: National Science Foundation
    Inventors: Caisheng Wang, Zuhair M. Alaas, Jianfei Chen
  • Patent number: 11153995
    Abstract: An energy storage power supply is provided and includes a shell and a plurality of compartments, including a mainboard compartment for installing a circuit mainboard of the power supply, a battery compartment for installing a battery, a lighting compartment for installing a lamp panel, and a pair of heat dissipation air ducts. The lighting compartment, battery compartment and mainboard compartment are arranged from one end of the shell to the shell's other end sequentially. The pair of heat dissipation air ducts are arranged on two sides of one or more of the mainboard compartment and/or lighting compartment to prevent heat generated in the mainboard compartment and/or the lighting compartment from being dissipated into the battery compartment.
    Type: Grant
    Filed: April 26, 2020
    Date of Patent: October 19, 2021
    Assignee: Shenzhen Chifrog Technology Co., Ltd.
    Inventor: Yunzheng Jiang
  • Patent number: 11152860
    Abstract: A multi-phase switching regulator and a switching regulating method using the multi-phase switching regulator employ an interleaving circuit. The multi-phase switching regulator includes: a first regulating circuit configured to receive an input voltage and generate a first sub-output voltage with a first phase by transforming the input voltage in response to a first set signal; a second regulating circuit configured to receive the input voltage and generate a second sub-output voltage with a second phase by transforming the input voltage in response to a second set signal; and the interleaving circuit configured to repeatedly and sequentially generate the first set signal and the second set signal by comparing a reference voltage with an output voltage generated based on the first sub-output voltage and the second sub-output voltage.
    Type: Grant
    Filed: August 14, 2019
    Date of Patent: October 19, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sun-Kyu Lee, Nguyen Huyhieu, Dong-Jin Keum, Je-Hyung Yoon, Hee-Seok Han
  • Patent number: 11133739
    Abstract: Systems and methods that facilitate multilevel hysteresis voltage control methods for cascaded multilevel voltage modulators having a plurality of power cells connected in series and has any positive integer number of output voltage levels to control any unipolar voltage on the load of the voltage modulator, and transfer electrical power from an electrical grid via AC/DC converters or directly from energy storage elements of the power cells to that load. A method of operational rotation of the power cells of a multilevel voltage modulator, which ensures an equal power sharing among the power cells and voltage balancing of the energy storage elements of the power cells of the modulator.
    Type: Grant
    Filed: December 5, 2019
    Date of Patent: September 28, 2021
    Assignee: TAE TECHNOLOGIES, INC.
    Inventor: Mikhail Slepchenkov
  • Patent number: 11121645
    Abstract: A converter station has two line-commutated converters for energy transmission via a bipolar high voltage direct current transmission line. In a first operating mode of the converter station the two converters are electrically connected in an anti-parallel circuit to the same pole of the high voltage direct current transmission link and one of the converters is operated as a rectifier and the other converter is operated as an inverter in an network. In a second operating mode the two converters are connected to different poles of the high voltage direct current transmission link and both converters are operated as either rectifiers or inverters in the AC network. In both operating modes a station active power exchanged between the converter station and the AC network is controlled by active power specifications for converter active powers which are exchanged between the converters and the AC network.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: September 14, 2021
    Assignee: Siemens Aktiengesellschaft
    Inventors: Johann Messner, Nicolas Soellner
  • Patent number: 11121556
    Abstract: A high efficiency solar power system combining photovoltaic sources of power (1) can be converted by a base phase DC-DC photovoltaic converter (6) and an altered phase DC-DC photovoltaic converter (8) that have outputs combined through low energy storage combiner circuitry (9). The converters can be synchronously controlled through a synchronous phase control (11) that synchronously operates switches to provide a conversion combined photovoltaic DC output (10). Converters can be provided for individual source conversion or phased operational modes, the latter presenting a combined low photovoltaic energy storage DC-DC photovoltaic converter (15) at string or individual panel levels.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: September 14, 2021
    Assignee: AMPT, LLC
    Inventor: Anatoli Ledenev
  • Patent number: 11114889
    Abstract: An electronic circuit for redundant supply of an electric load comprises a plurality of terminals including at least a first terminal, a second terminal and at least one third terminal, wherein the first terminal is configured to be connected to a first energy source for primary supply of the electric load; the second terminal is configured to be connected to a second energy source for secondary supply of the electric load; the at least one third terminal is configured to be connected to the electric load; the electronic circuit further comprises a plurality of electrical components interposed between the first terminal, the second terminal and the at least one third terminal, the electrical components being configured to enable power flow from either the first terminal or the second terminal to the at least one third terminal in dependence of an erroneous supply state for the electric load.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: September 7, 2021
    Assignee: Aptiv Technologies Limited
    Inventor: Markus Heinrich
  • Patent number: 11108241
    Abstract: A method of controlling a photovoltaic power system, can include: controlling a first current flowing through a connection line between an output terminal of a power conversion circuit and an input terminal of an inversion circuit according to a rapid shutdown signal; and controlling operation states of the power conversion circuit coupled to a photovoltaic panel in accordance with the first current, such that a voltage on the connection line meets preset requirements. A photovoltaic power system can include: an inversion circuit configured to be controlled to regulate a first current of an input line of the inversion circuit; and at least one power conversion circuit coupled in series with the input line, and being configured to transition among different operation states according to the first current.
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: August 31, 2021
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventor: Kaiwei Yao
  • Patent number: 11070062
    Abstract: Different systems to achieve solar power conversion are provided in at least three different general aspects, with circuitry that can be used to harvest maximum power from a solar source or strings of panels for DC or AC use, perhaps for transfer to a power grid three aspects can exist perhaps independently and relate to: 1) electrical power conversion in a multimodal manner, 2) alternating between differing processes such as by an alternative mode photovoltaic power converter functionality control, and 3) systems that can achieve efficiencies in conversion that are extraordinarily high compared to traditional through substantially power isomorphic photovoltaic DC-DC power conversion capability that can achieve 99.2% efficiency or even only wire transmission losses. Switchmode impedance conversion circuits may have pairs of photovoltaic power series switch elements and pairs of photovoltaic power shunt switch elements.
    Type: Grant
    Filed: March 30, 2020
    Date of Patent: July 20, 2021
    Assignee: AMPT, LLC
    Inventors: Anatoli Ledenev, Robert M. Porter
  • Patent number: 11065973
    Abstract: A distributed converter for delivering power to a set of loads is provided. The distributed converter includes a converter battery distribution unit that includes a converter-modular power tile, and the converter-modular power tile includes a battery pack configured to deliver power to a load of the set of loads.
    Type: Grant
    Filed: January 18, 2018
    Date of Patent: July 20, 2021
    Assignee: GE Aviation Systems Limited
    Inventors: Russell Mark Compton, John Oliver Collins, Hao Huang, David Killin Roberts
  • Patent number: 11025059
    Abstract: A switching system includes a transformer and a switching assembly for controlling conduction of current from a power source to a first load along a power cable. The switching assembly includes a switch cell conductively coupled to the power cable. The transformer has a primary winding and a secondary winding. The secondary winding is conductively coupled to the switch cell. The primary winding is conductively coupled to a switch controller via the power cable. The transformer is configured to receive an activation control signal from the switch controller at the primary winding via the power cable and convey the activation control signal to the switch cell via the secondary winding. The switch cell is configured to activate and conduct the current from the power source to the first load along the power cable responsive to receiving the activation control signal from the switch controller.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: June 1, 2021
    Assignee: BAKER HUGHES OILFIELD OPERATIONS LLC
    Inventors: Antonio Caiafa, Ahmed Elasser, Dong Dong
  • Patent number: 11025083
    Abstract: The present disclosure is directed to an energy storage system including a power source and a power converter coupled to the power source. The power converter is configured to output power suitable for consumption in a utility grid. The energy storage system also includes an energy storage device configured to receive the power output from the power converter and a charge discharge converter coupled between the power converter and the energy storage device. The charge discharge converter is configured to control at least one of charging or discharging the energy storage device. Furthermore, the energy storage device includes a transformer coupled between the charge discharge converter and the power converter.
    Type: Grant
    Filed: April 24, 2018
    Date of Patent: June 1, 2021
    Assignee: General Electric Company
    Inventors: Parag Rameshchandra Dharmadhikari, Robert Roesner
  • Patent number: 11011914
    Abstract: A high efficiency solar power system combining photovoltaic sources of power (1) can be converted by a base phase DC-DC photovoltaic converter (6) and an altered phase DC-DC photovoltaic converter (8) that have outputs combined through low energy storage combiner circuitry (9). The converters can be synchronously controlled through a synchronous phase control (11) that synchronously operates switches to provide a conversion combined photovoltaic DC output (10). Converters can be provided for individual source conversion or phased operational modes, the latter presenting a combined low photovoltaic energy storage DC-DC photovoltaic converter (15) at string or individual panel levels.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: May 18, 2021
    Assignee: AMPT, LLC
    Inventor: Anatoli Ledenev
  • Patent number: 10985573
    Abstract: A power generation system includes a plurality of photovoltaic cell panels for outputting DC power, a plurality of inverters for converting DC power into AC power, and a high-order device for communicating with the plurality of inverters. The high-order device is configured to acquire a predetermined power factor, and transmit a command value to each of the plurality of inverters so that the power factor corresponding to the predetermined power factor is achieved by a total output of the plurality of inverters. The high-order device is configured so as to determine a specific inverter that has room to increase the amount of reactive power output from among the plurality of inverters, to transmit a reactive power increasing command value for increasing reactive power to the specific inverter.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: April 20, 2021
    Assignee: TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION
    Inventor: Yasuaki Mitsugi
  • Patent number: 10985560
    Abstract: Each of the plurality of generators is configured so a relationship of frequency with respect to a generator active power output by each generator to the corresponding alternating-current wiring unit has a predetermined first drooping characteristic. The plurality of power conversion devices is configured to convert alternating-current power input through each alternating-current wiring unit into direct-current power, and to convert direct-current power input through the direct-current wiring unit into alternating-current power.
    Type: Grant
    Filed: December 26, 2017
    Date of Patent: April 20, 2021
    Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Yusuke Umezu, Kazushige Sugimoto, Soichiro Bando, Naoki Yamaguchi, Kiyoshi Kimura, Suguru Takayama, Takato Uda
  • Patent number: 10965128
    Abstract: A circuit for a smart photovoltaic (PV) inverter system and the smart PV inverter system are described. The circuit includes one or more strings coupled to an electrical load. Each of the one or more strings further includes one or more string members coupled in series, where each of the one or more string members comprises a voltage source and an inverter. The circuit also includes a controller to receive an output from an operator controller and control the strings, where the controller is configured to control the strings by providing a function command to a first string member of each of the one or more strings based on the output from the operator controller. The voltage source may also receive an output from an energy output device. Further, the inverter may be configured to convert the output of energy output device into an energy source of electrical load.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: March 30, 2021
    Assignee: SINEWATTS INC.
    Inventors: Shibashis Bhowmik, Hamidreza Jafarian, Babak Parkhideh, Robert Cox
  • Patent number: 10944268
    Abstract: Grid-isolated solar system and method to use a solar electrical power regulator to control each battery commander and control each micro-inverter that produce AC electrical power from one or more solar cell panels. One embodiment is a system to regulate the total AC electrical power to avoid sending electrical power to an outside electrical utility grid. A second embodiment is an apparatus to regulate the total AC electrical power produced by one or more solar cell panels to avoid sending electrical power to an outside electrical utility grid.
    Type: Grant
    Filed: February 21, 2019
    Date of Patent: March 9, 2021
    Inventor: Phahol Lowchareonkul
  • Patent number: 10938219
    Abstract: Methods and apparatus may provide for the adaptive operation of a solar power system (3). Solar energy sources (1) and photovoltaic DC-DC power converters (2) may be interconnected in serial, parallel, or combined arrangements. DC photovoltaic power conversion may be accomplished utilizing dynamically adjustable voltage output limits (8) of photovoltaic DC-DC power converters (2). A photovoltaic DC-DC power converter (2) may include at least one external state data interface (7) receptive to at least one external state parameter of a solar power system (3). A dynamically adjustable voltage output limit control (12) may be used to relationally set a dynamically adjustable voltage output limit (8) of a photovoltaic DC-DC power converter (2). Dynamically adjusting voltage output limits (8) may be done in relation to external state parameter information to achieve desired system results.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: March 2, 2021
    Assignee: Ampt, LLC
    Inventors: Robert M. Porter, Anatoli Ledenev
  • Patent number: 10931105
    Abstract: A power transmission network includes converters interconnected via electrical elements, at least one power flow router, and a controller. Each power flow router being operatively connected to the electrical elements, each power flow router configured to selectively control current flow in the electrical elements so as to direct power between two or more of the plurality of converters.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: February 23, 2021
    Assignee: General Electric Technology GmbH
    Inventors: Carl David Barker, Pablo Briff, Francisco Jose Moreno Munoz, Rosemary King
  • Patent number: 10931114
    Abstract: A first voltage source converter and converter station including such a first voltage source converter, as well as a method and computer program product for controlling the first voltage source converter are disclosed. The first voltage source converter has a DC side for connection to a DC system, has an AC side for connection to an AC system and is interconnected with an AC side of a second voltage source converter, which has a DC side connected to the DC system. The first voltage source converter includes a number of converter valve pairs, each being connected to a corresponding AC phase of the AC system and a control unit controlling the converter valves to generate at least one AC waveform and to reduce oscillations between the converters.
    Type: Grant
    Filed: August 3, 2017
    Date of Patent: February 23, 2021
    Assignee: ABB POWER GRIDS SWITZERLAND AG
    Inventors: Ying Jiang-Häfner, Adil Abdalrahman, Per Holmberg
  • Patent number: 10916942
    Abstract: A method and apparatus for power converter current control. In one embodiment, the method comprises controlling an instantaneous current generated by a power converter that is part of an AC battery such that the power converter appears, from the perspective of an AC line coupled to the power converter, as a virtual AC voltage source in series with a virtual impedance, wherein real and reactive phasor currents for the power converter are indirectly controlled by modifying amplitude and phase of a virtual AC voltage waveform that defines the virtual AC voltage source.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: February 9, 2021
    Assignee: Enphase Energy, Inc.
    Inventors: Christopher Rowe, Donald Richard Zimmanck, Michael J. Harrison, Martin Fornage
  • Patent number: 10903657
    Abstract: A method for controlling an alternating current cascade photovoltaic power generation system is provided, which includes: acquiring, by a master controller, a current total output power of the system; determining, by the master controller, whether the total power value is greater than a preset power value; generating, by the master controller, a first control signal if the total power value is greater than the preset power value; generating, by the master controller, a second control signal if the total power value is smaller than or equal to the preset power value; receiving, by the slave controller, the first or second control signal generated by the master controller; and controlling, by the slave controller based on the first control signal, a cascade unit to independently perform an MPPT operation, or controlling, by the slave controller based on the second control signal, the cascade unit to output power.
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: January 26, 2021
    Assignee: SUNGROW POWER SUPPLY CO., LTD.
    Inventors: Cai Jiang, Xinyu Wang, Jun Xu
  • Patent number: 10886841
    Abstract: A hybrid switched capacitor power converter for high-power applications is provided. The converter has a transistor-switched input-stage boost converter followed by a capacitor-and-diode ladder circuit. The converter is adapted to produce an output voltage of at least 5 kV at a power level of at least 0.5 kW. The ladder circuit includes one or more multi-stage rails.
    Type: Grant
    Filed: April 15, 2019
    Date of Patent: January 5, 2021
    Assignee: National Technology & Engineering Solutions of Sandia, LLC
    Inventors: Robert W. Brocato, Jason C. Neely, Lee Joshua Rashkin, Jarod James Delhotal, Jack David Flicker, Robert Kaplar, Joshua Stewart, James Richards