Plural Converters Patents (Class 307/82)
  • 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: 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: 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: 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
  • Patent number: 10886746
    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 (1) or strings of panels (11) for DC or AC use, perhaps for transfer to a power grid (10) 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 (27), 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 (24) and pairs of photovoltaic power shunt switch elements (25).
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: January 5, 2021
    Assignee: AMPT, LLC
    Inventors: Anatoli Ledenev, Robert M. Porter
  • Patent number: 10870333
    Abstract: Methods and systems for reconfigurable utility power with passive voltage booster for a transport climate control system are provided. The transport climate control system includes a passive boost circuit. The system also includes a controller configured to determine whether the passive boost circuit is connected to one of a first utility power and a second utility power. The controller instructs the passive boost circuit to operate in a first configuration when the passive boost circuit is connected to the first utility power and instructs the passive boost circuit to operate in a second configuration when the passive boost circuit is connected to the second utility power. The system further includes a load such as a motor. The load can drive a device such as a compressor, a fan, etc. The load is connected to the passive boost circuit and configured to receive power from the passive boost circuit.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: December 22, 2020
    Assignee: Thermo King Corporation
    Inventors: Ryan Wayne Schumacher, Marcelo Andrade Dias, Esteban Canade Tarquini
  • Patent number: 10838902
    Abstract: An expansion card may include a printed circuit board and a hardware accelerator that is disposed on the printed circuit board. The hardware accelerator may include application-specific hardware circuitry designed to perform a computing task. The hardware accelerator may also offload a portion of the computing task from a central processing unit of a computing device by executing, via the application-specific hardware circuitry, the portion of the computing task. The expansion card may further include an edge connector, disposed on the printed circuit board, that is dimensioned to be inserted into an expansion socket of the computing device. The edge connector may couple the hardware accelerator to the central processing unit via a computing bus connected to the expansion socket. The edge socket may also include a pinout that is more compact than a pinout specification defined for the computing bus. Various other apparatuses, systems, and methods are also disclosed.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: November 17, 2020
    Assignee: Facebook, Inc.
    Inventor: Narsing Krishna Vijayrao
  • Patent number: 10826093
    Abstract: A method for addressing electrical grid frequency changes by a fuel cell system includes measuring, by a frequency sensor, a frequency of an electrical grid, determining that the frequency of the electrical grid differs from a normal frequency of the electrical grid by a threshold, determining, based at least in part on the measured frequency, an AC power setpoint bias, applying a magnitude limit, a rate-of-change limit, and a duration limit to the determined AC power setpoint bias to generate a limited power setpoint bias, generating a frequency adjusted power setpoint based on the limited power setpoint bias, and providing the frequency adjusted power setpoint to one or more control modules of the fuel cell system such that the fuel cell system adjusts a power output based on a difference between the measured frequency and the normal frequency.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: November 3, 2020
    Assignee: FuelCell Energy, Inc.
    Inventors: George P. Berntsen, Ramakrishnan Venkataraman
  • Patent number: 10819130
    Abstract: A mobile charge/discharge device for being electrically connected to a power source and a first power receiving device is disclosed. The mobile charge/discharge device includes a detection circuit detecting a first working power of the power source and a second working power of the first power receiving device; an input port having a first power supply pin for being electrically connected to the power source; a first output port having a second power supply pin for being electrically connected to the first power receiving device; and a controlling circuit controlling the power source to supply the first power receiving device with a power according to one of the first working power and the second working power and supply the mobile charge/discharge device with a power according to the difference of the first working power and the second working power at the same time.
    Type: Grant
    Filed: October 26, 2015
    Date of Patent: October 27, 2020
    Assignee: WISTRON CORP.
    Inventors: Ronald Chang, Charles Chang, Heng-Chang Su
  • Patent number: 10804735
    Abstract: Techniques for providing an uninterruptible power supply are disclosed. An example system includes three single-phase Uninterruptible Power Supplies (UPSs) and an adapter. The adapter is to receive three-phase AC power, and separate the three-phase AC power into three separate single-phase outputs. Each single-phase output is coupled to an input of one of the three single-phase UPSs. An output of each one of the single-phase UPSs is coupled to one of three single-phase inputs of the adapter, and the adapter is to combine the three single-phase inputs into a single three-phase output.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: October 13, 2020
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Hai Ngoc Nguyen, Daniel Hsieh, Abhishek Banerjee
  • Patent number: 10804734
    Abstract: A redundant power supply system has power supplies and holdup control circuits. The power supplies are connected in parallel for connecting to an input capacitor of a load system. An OR-gate anti-reverse current element is connected between each of the power supplies and the input capacitor. The holdup control circuits correspondingly connect to the DC output sides of the power supplies. Each of the holdup control circuits has an inductor, an electronic switch and a controller. The inductor is connected in series to the OR-gate anti-reverse current element. The electronic switch is connected between the DC output side of the corresponding power supply and a node where the inductor and the OR-gate anti-reverse current element are connected. The controller turns on and off of the electronic switch according to the DC power output from the DC output sides, thereby prolonging the holdup time after a power failure.
    Type: Grant
    Filed: October 5, 2017
    Date of Patent: October 13, 2020
    Assignee: ACBEL POLYTECH INC.
    Inventors: Jui-Yang Chiu, Cheng-Yen Yeh, Chien-Ting Cho
  • Patent number: 10797506
    Abstract: In certain aspects, methods and systems for converting DC power to AC power by a wireless power receiver are disclosed. Certain aspects provide a wireless power receiver including a resonant circuit. The wireless power receiver includes a first switching circuit coupled to the resonant circuit, the first switching circuit configured to act as an inverter and generate a first signal, based on an output from a battery, at a resonant frequency of the resonant circuit, the first signal having an envelope at a first frequency. The wireless power receiver includes a second switching circuit coupled to the resonant circuit that is configured to bias the second switching circuit at the resonant frequency in response to the first signal, wherein the second switching circuit is configured to act as a rectifier and is configured to extract the envelope to generate a second signal at half of the first frequency.
    Type: Grant
    Filed: April 5, 2018
    Date of Patent: October 6, 2020
    Assignee: WiTricity Corporation
    Inventors: Edward Van Boheemen, Chang-Yu Huang, Michael Le Gallais Kissin
  • Patent number: 10793019
    Abstract: A high voltage battery pack comprises series-connected battery units, each separately powering a respective DC/DC converter. The converter outputs are coupled in parallel to supply a low-voltage DC bus. A central module has 1) an outer loop controller generating a target current to regulate the bus voltage and 2) an allocator distributing the target current via allocated current commands for respective converters. Local controllers each regulate an output current of a respective converter. The allocator identifies battery units having a predetermined deviation from a reference metric that characterizes the battery pack, allocates reverse currents to respective converters for the identified battery units, and increases the target current commanded for the DC/DC converters not allocated to have a reverse current by the allocated reverse currents. Battery units with extremely low or high states as compared with the other units are quickly balanced, thereby improving overall performance of the battery pack.
    Type: Grant
    Filed: August 16, 2018
    Date of Patent: October 6, 2020
    Assignee: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Xiaohong Duan, Richard Dyche Anderson
  • Patent number: 10797599
    Abstract: A method for regulating output characteristics of a photovoltaic module and a DC/DC converter are provided. The DC/DC converter connected with the photovoltaic module determines whether an output voltage of the DC/DC converter detected in a real-time manner is greater than a first preset voltage threshold, and controls an output current of the DC/DC converter to be greater than a first preset current threshold and less than zero or control an output power of the DC/DC converter to be greater than a first preset power threshold and less than zero, in a case that the output voltage is greater than a first preset voltage threshold.
    Type: Grant
    Filed: July 30, 2018
    Date of Patent: October 6, 2020
    Assignee: SUNGROW POWER SUPPLY CO., LTD.
    Inventors: Yanfei Yu, Hua Ni, Zongjun Yang, Jingjing Xie
  • Patent number: 10790662
    Abstract: An electrical power distribution system includes a number of alternating current (AC) power output ports to transmit electrical power at a first fixed AC voltage level to a corresponding number of AC power loads. An AC bus coupled to the AC power output ports, and to couple to an AC power grid, transmits electrical power at a second fixed AC voltage level. A DC bus transmits electrical power at a first fixed DC voltage level. A number of AC power input/output (I/O) adapters are coupled to the AC bus and the DC bus, each including a bidirectional AC-to-DC (AC/DC) converter to receive and convert the electrical power transmitted on the AC bus at the second fixed AC voltage level to the electrical power at the first fixed DC voltage level for transmission to the DC bus, and to receive and convert the electrical power transmitted on the DC bus at the first fixed DC voltage level to the electrical power at the second fixed AC voltage level for transmission to the AC bus.
    Type: Grant
    Filed: April 3, 2018
    Date of Patent: September 29, 2020
    Assignee: Katerra, Inc.
    Inventors: Bahman Sharifipour, Mark Thomas
  • Patent number: 10790761
    Abstract: A DC power transmission system interconnects a plurality of AC systems via a DC line. A plurality of power conversion devices are connected between the plurality of AC systems and the DC line. One of the plurality of power conversion devices controls the voltage on the DC line, while the remaining power conversion device controls a current input and output to and from the DC line. In a restart which resumes power conversion from a stopped state for controlling a DC current on the DC line, the power conversion device performing current control monitors the voltage on the DC line and starts a restart operation without transmitting or receiving information to or from the other power conversion device.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: September 29, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takuya Kajiyama, Takeshi Kikuchi, Kaho Mukunoki, Osamu Mori, Toshiyuki Fujii
  • Patent number: 10790675
    Abstract: There are provided an apparatus for transmitting power wirelessly. The apparatus for transmitting power wirelessly may include a boosting unit boosting an input voltage, and an inverter unit inverting the boosted voltage output from the boosting unit to transmit power wirelessly. The inverter unit and the boosting unit are controlled by the same switching element.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: September 29, 2020
    Assignee: WITS Co., Ltd.
    Inventors: Sang Ho Cho, Chang Ik Kim, Seung Won Park, Yong Woon Park, Sang Beom Lee, Eun Young Shin, Jae Suk Sung, Jae Hyoung Cho
  • Patent number: 10770903
    Abstract: In one embodiment, a direct current bus is disclosed. The direct current bus is a four conductor bus and comprises a positive voltage conductor, a neutral conductor, a negative voltage conductor, and a safety ground. The direct current bus may be implemented in a photovoltaic system to interconnect various components of the photovoltaic system.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: September 8, 2020
    Assignee: Zyntony, Inc.
    Inventors: Robin Urry, Roger Johnsen, Russell Scott
  • Patent number: 10766088
    Abstract: A power supply for welding, cutting and similar operations includes a dual two-switch forward converter. The converter has two inverter circuits coupled in parallel but controlled to provide output power in an interleaved fashion. To avoid “walking” of the circuits (which could result in different duty cycles and imbalance of the load sharing), control signals are determined and applied to a first of the inverter circuits, and “on” times of the first circuit is monitored, such as by augmenting a counter to determine the number of clock cycles the first circuit is “on”. The same duration is then used for commanding output from the second inverter circuit. The duty cycles of both circuits is thus ensured to be the same regardless of changes in the total output power.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: September 8, 2020
    Assignee: Illinois Tool Works
    Inventors: Alan A. Manthe, Jason Alan Dunahoo, Craig Steven Knoener, Mary Divya Poulose
  • Patent number: 10770924
    Abstract: A reradiation antenna comprises, an insulation plate; a loop-shaped radiation unit formed on one surface of the insulation plate, disposed along an outer circumference of the insulation plate, and having one end and the other end disposed to be adjacent to each other; a ground connected to the end of the radiation unit; and a power supply unit connected to the other end of the radiation unit so as to supply power, and can receive a wireless signal and transmit the wireless signal to a terminal without degrading the performance of a wireless charging device.
    Type: Grant
    Filed: February 2, 2016
    Date of Patent: September 8, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Joosung Hwang, Jeongkyo Seo, Sangju Lee
  • Patent number: 10763677
    Abstract: The present invention relates to a battery energy storage system including: a plurality of battery boxes provided with a plurality of battery packs; a plurality of power converter systems respectively connected to the plurality of battery boxes to selectively charge or discharge the plurality of battery boxes through alternating current supplied from an external power source device; a transformer disposed between the external power source device and the plurality of power converter systems; and a controller controlling the plurality of power converter systems to selectively charge or discharge the plurality of battery boxes.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: September 1, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Dong Hoe Kim, Chan Min Park, Tae Shin Cho, Jong Min Park, Kil Won Lee
  • Patent number: 10739806
    Abstract: A method for determining a currently maximum possible power of a photovoltaic (PV) installation operated in a curtailed manner and including a PV generator having at least one string, wherein the at least one string includes a series circuit of PV modules, in which at least one PV module is connected to adjacent PV modules in the string via a coupling circuit. The installation further includes an inverter which is connected, on the output side, to an energy supply grid and is connected, on the input side, to the PV generator. The installation also includes a controller for controlling the inverter and the coupling circuit, wherein the controller, in conjunction with the coupling circuit, is designed to vary a power drain of the PV module assigned to it relative to a power drain of the adjacent PV modules during operation of the PV installation.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: August 11, 2020
    Assignee: SMA Solar Technology AG
    Inventors: Joachim Laschinski, Gerd Bettenwort
  • Patent number: 10734813
    Abstract: The present invention discloses a triple input smart power supply module capable to work with solar power, utility power or battery to empower the desktop PC and any other gadgets where final power source is DC, to stand brown outs and black outs reliably and saving 58 to 65% of power and much more when connected with solar panel. For PC application it comprises of 10-16V DC-DC ATX PC power supplies, 15V DC power supply from 230V AC using PFC techniques, switching rectifier circuits, a solar panel within the range 50-80 Wp, 12V SMF battery, a current limited charger circuit and a monitor working on 12V DC. The invention will be a revolutionary and path breaking venture in the production and use of “Green PCs”. Scope of TRISP is not limited to PCs and it can be extended to any gadget requiring steady and clean input power with a backup facility, where final input power source is DC.
    Type: Grant
    Filed: February 10, 2017
    Date of Patent: August 4, 2020
    Assignee: INDIAN SPACE RESEARCH ORGANISATION
    Inventors: Thankappan Saboo, Varapparampil Shanmughan Prathap, Maniyanplackal Sreedharan Sibu
  • Patent number: 10727774
    Abstract: A multi-level high-speed adjustable speed drive has a plurality of modular multilevel, 3-phase inverter bridges, wherein the multilevel, 3-phase inverter bridges operate with fundamental frequency, f, wherein the multilevel, 3-phase inverter bridges include at least three levels, wherein the multilevel, 3-phase inverter bridges operate in Pulse-Width Modulation (PWM) mode with 9 to 21× or operating in Fundamental Frequency Mode (FFM), wherein inverter commutation frequency equals the fundamental frequency, wherein the multilevel, 3-phase inverters operate with split phase such that one group is displaced from the other by an angle, ?=60°/q, wherein the phase displacement of a harmonic component of order n between groups, ?n is n?/q; a high-speed polyphase motor with phases arranged in q 3-phase groups; and electromagnetic means for blocking selected groups of harmonics while passing components at fundamental frequency, f, wherein the electromagnetic means includes coils carrying motor current linked by a magn
    Type: Grant
    Filed: March 11, 2016
    Date of Patent: July 28, 2020
    Assignee: General Atomics
    Inventor: George Thomas Santamaria
  • Patent number: 10727673
    Abstract: A power system including a rectifier and an inverter. The rectifier has a plurality of phase input terminals and a plurality of rectifier output terminals that provide respective rectified outputs, rectifier circuitry that rectifies the signals on the phase input terminals to generate respective rectified outputs on the rectifier output terminals, a rectifier neutral to receive a power source neutral, and capacitors connected between the rectifier neutral and the rectifier output terminals. The inverter includes a respective plurality of inverter input terminals respectively connected to the rectifier output terminals, a plurality of inverter output terminals, and an inverter neutral. The rectifier neutral and the inverter neutral are coupled by a conductor to form a same neutral.
    Type: Grant
    Filed: August 26, 2019
    Date of Patent: July 28, 2020
    Assignee: Google LLC
    Inventors: Sangsun Kim, Anand Ramesh, Scott Aldous, John Zipfel
  • Patent number: 10720771
    Abstract: A current/voltage control apparatus capable of following power changes in a DC system. A current/voltage control apparatus includes a central monitoring control device that controls V-I characteristics of a terminal converter based on power consumption consumed by a load facility and generated power generated by a power generation facility, and the central monitoring control device includes a load state setting unit that predicts a change range of the power consumption in a predetermined period and also predicts a change range of the generated power in the period and a V-I characteristic determination unit that determines the V-I characteristics of the terminal converter based on the change range of the power consumption and the change range of the generated power predicted by the load state setting unit.
    Type: Grant
    Filed: January 5, 2017
    Date of Patent: July 21, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Tomihiro Takano
  • Patent number: 10720774
    Abstract: Various embodiments include a hybrid energy system that includes a gas-turbine generator (GTG), an energy storage device configured to store energy that is coupled to an inverter, with the GTG and energy storage device coupled to a low side of a step-up transformer, and methods of operating such hybrid energy systems to meet power output contract requirements or provide power for industrial power applications that exhibit load swings. Some methods of operation include controlling power output from and charging of the storage device so as to satisfy a contract schedule of electric power output. Some methods of operation include discharging a portion of stored energy of the energy storage device to satisfy swing loads of the industrial application and charging the energy storage device by the GTG between swing loads.
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: July 21, 2020
    Assignee: Wellhead Power Solutions, LLC
    Inventors: John Grant McDaniel, Harold Edwin Dittmer
  • Patent number: 10714975
    Abstract: A dual band wireless power reception unit is disclosed. The wireless power reception unit according to one embodiment comprises: a first resonator; a second resonator connected to the first resonator in parallel; a single rectifier having, as an input, a node in which outputs of the first resonator and the second resonator are connected to each other in parallel; at least one switch having a first output, a second output, and an input, wherein the second output is connected to the ground; at least one capacitor connected to the second resonator in parallel, and of which one terminal is connected to the first output of the switch and the other terminal is connected to the rectifier input; and a frequency sensor sensing an input frequency from the rectifier input, and of which an output is connected to the input of the switch.
    Type: Grant
    Filed: February 29, 2016
    Date of Patent: July 14, 2020
    Assignee: MAPS, INC.
    Inventors: Jong-Tae Hwang, Sung-Min Park, Ki-Woong Jin, Sang-O Jeon, Ik-Gyoo Song, Hyun-Ick Shin, Joon Rhee
  • Patent number: 10700617
    Abstract: A converter converting between a dc voltage at a first voltage level and at least one waveshape at a second higher voltage level has a primary connection port for the dc voltage, one secondary connection port for each waveshape, and one stack of cells for each secondary port. Each stack includes n cells connected in cascade between the primary port and the corresponding secondary port. At least (n?1) of the cells in a stack have: first, second, third, and fourth terminals, a first energy storage, and first, second, and third switches, where the first energy storage is connected in parallel with the first and second switches, the first terminal is provided at a junction between the first energy storage and the first switch, and the second terminal is provided at a junction between the first energy storage element, the second switch and the third switch.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: June 30, 2020
    Assignee: ABBSchweiz AG
    Inventors: Ahmed Abdelhakim Moustafa Abdelrazek, Cicero Postiglione, Frans Dijkhuizen
  • Patent number: 10693297
    Abstract: Disclosed is a centralized MPPT exiting method for a photovoltaic inverter comprising multiple DC chopper circuits and one inverter circuit. The method comprises: when the photovoltaic inverter is in a centralized MPPT mode, MPPT control is implemented independently for each photovoltaic cell in a photovoltaic component and the maximum power point for each photovoltaic cell is obtained; a reference value of the maximum power point for each photovoltaic cell is determined according to the type of the multiple DC chopper circuits; whether the voltage difference between the other maximum power points and the reference value goes beyond an allowable voltage difference is judged and the operation of the DC chopper circuits connecting to the photovoltaic cells with a voltage difference beyond the allowable voltage difference is recovered.
    Type: Grant
    Filed: July 15, 2014
    Date of Patent: June 23, 2020
    Assignee: SUNGROW POWER SUPPLY CO., LTD.
    Inventors: Fenggang Zhang, Hua Ni, Qun Zheng, Yanhu Zhang, Bing Hu
  • Patent number: 10673334
    Abstract: In accordance with an embodiment, a method includes converting power by a power converter circuit having a plurality of converter cells coupled to a supply circuit. Converting the power includes a plurality of successive activation sequences and, in each activation sequence, activating at least some of the plurality of converter cells at an activation frequency. The activation frequency is dependent on at least one of an output power and an output current of the power converter circuit.
    Type: Grant
    Filed: October 8, 2018
    Date of Patent: June 2, 2020
    Assignee: INFINEON TECHNOLOGIES AUSTRIA AG
    Inventors: Gerald Deboy, Kennith Kin Leong
  • Patent number: 10666046
    Abstract: A scalable DC power distribution and control system suitable for commercial buildings includes one or more power and control hubs. Each DC power and control power hub provides power and control for any suitable distributed DC loads such as light-fixtures. AC power from the electric utility is applied to the power and control hub and is converted to DC power for distribution to DC loads within the space using low-voltage cables.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: May 26, 2020
    Assignee: The Watt Stopper, Inc.
    Inventors: Jeffrey T. Davis, Jonathan P. Cartrette
  • Patent number: 10651735
    Abstract: The disclosure relates to technology for providing power, voltage, and/or current from a combination of DC sources. The DC sources may be photovoltaic panels. One aspect includes a stack of DC power sources (e.g., photovoltaic modules) with a DC to DC converter (e.g., power optimizer) associated with each DC power source. An output capacitor of a DC to DC converter is connected in series with its DC power source. Thus, there is a string of DC power sources and output capacitors connected in electrical series. The DC output of the system is a series connection of the DC power sources and the output capacitors. This reduces stress on the output capacitors, while allowing for efficient power generation by the DC power sources.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: May 12, 2020
    Assignee: Futurewei Technologies, Inc.
    Inventor: Heping Dai
  • Patent number: 10631395
    Abstract: Systems and methods for increasing the RF power switched into a resonant load by achieving voltage multiplication by means of coupled inductors are provided herein. In one approach, the RF electromagnetic wave achieved by voltage multiplication is used to drive a diode opening switch in order to create a fast rising, unipolar electrical pulse.
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: April 21, 2020
    Assignee: TRANSIENT PLASMA SYSTEMS, INC.
    Inventors: Jason M. Sanders, Mark Thomas
  • Patent number: 10622812
    Abstract: A power control method for controlling power of a plurality of power conversion modules that are respectively connected in parallel to a plurality of photovoltaic, includes: sensing a string current value flowing between outermost opposite ends of the plurality of photovoltaic modules, and voltage and current values of each of the photovoltaic modules; changing the string current value and respectively calculating conversion power values of the plurality of power conversion modules per the changed string current value by using the voltage and current values; searching a string current value for a minimum power point tracking control among the changed string current values by using the conversion power values; and controlling the plurality of power conversion modules to track the searched string current value.
    Type: Grant
    Filed: November 13, 2015
    Date of Patent: April 14, 2020
    Assignee: SOONGSIL UNIVERSITY RESEARCH CONSORTIUM TECHNO-PARK
    Inventors: Joung Hu Park, Young Tae Jeon
  • Patent number: 10615578
    Abstract: A pre-fabricated electrical apparatus has: a main housing configured to enclose electrical equipment in use; a splice compartment mounted, or integrally formed, external to and adjacent the main housing; a conductor passage defined between the main housing and the splice compartment; and in which the main housing and splice compartment are configured to, in use, permit a conductor to extend from a first conductor termination point, defined within the main housing, to a second conductor termination point, defined within the splice compartment, with the second termination point having a temperature rating that is higher than a temperature rating of the electrical equipment. A method includes: prefabricating, at a prefabrication facility, an electrical apparatus by mounting or integrally forming a splice compartment adjacent an external part of a main housing; and installing the electrical apparatus at an end user facility, which is remote from the prefabrication facility.
    Type: Grant
    Filed: May 19, 2017
    Date of Patent: April 7, 2020
    Inventor: Shawn Murray Karle
  • Patent number: 10615685
    Abstract: Apparatuses, methods and storage medium associated with deriving power output from an energy harvester are disclosed herein. In embodiments, an apparatus may include one or more processors, devices, and/or circuitry to identify a plurality of times at which an intermediate voltage of a two stage power conversion circuit corresponds to a voltage reference, and ascertain an amount of time between one of the identified times and another one of the identified times. The one or more processors, devices, and/or circuitry may derive a power or current value associated with the second power supply using the amount of time.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: April 7, 2020
    Assignee: Intel Corporation
    Inventors: Lilly Huang, Christopher Schaef, Vaibhav Vaidya, Suhwan Kim
  • Patent number: 10608530
    Abstract: A switched tank converter includes at least three conversion units. Each conversion unit is a first-type conversion unit or a second-type conversion unit. An end of the support capacitor of each first-type conversion unit is electrically connected with a ground end. An end of a half-bridge clamping circuit of the second-type conversion unit is electrically connected with the ground end. A middle point of the half-bridge clamping circuit is electrically connected with an end of the support capacitor of the second-type conversion unit. The first-stage conversion unit is the first-type conversion unit. At least one conversion unit of the third-stage conversion unit to the Nth-stage conversion unit is the second-type conversion unit. Another end of the half-bridge clamping circuit of at least one second-type conversion unit is electrically connected with another end of the support capacitor of the lower-stage conversion unit excluding the first-stage conversion unit.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: March 31, 2020
    Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
    Inventors: Tiansheng Zhu, Yiqing Ye
  • Patent number: 10601223
    Abstract: The presently disclosed subject matter provides thermoelectric power generating systems that can include an arrangement of power generator units electrically connected to provide a global output voltage, each power generator unit generating an individual output voltage, and an electronic stabilization system. The electronic stabilization system can include DC/DC converters connected to one or more of the power generator units; electrical variable detectors including at least one of voltage detectors and current detectors for automatically measuring the individual voltage or individual current existing at a point of a DC/DC converter; and a microprocessor-based controller connected to the voltage and/or current detectors to receive the measured voltages and/or currents, and, based on the measurements, to control the operation of the DC/DC converters to obtain desired DC/DC converter output voltages and/or desired DC/DC converter currents.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: March 24, 2020
    Assignees: Universitat Autonoma de Barcelona, Alternative Energy Innovations, S.L.
    Inventors: Raúl Aragonés Ortiz, Roger Malet Munté, Carles Ferrer Ramis, Joan Oliver Malagelada
  • Patent number: 10601214
    Abstract: A method of clearing a fault in a high voltage DC electrical network, including power converters interconnected by a DC power transmission, comprising: detecting a fault in the DC power transmission and reconfiguring each power converter to a fault blocking mode driving the DC fault current towards zero; locating the fault and isolating a faulty portion from a healthy remaining portion; reconfiguring one of the power converters designated as a re-energising power converter from the fault blocking to re-energise the healthy remaining portion; and detecting a rise in the voltage level in the healthy remaining portion above a threshold level and reconfiguring the remaining power converter connected with the healthy remaining portion from the fault blocking to the normal power transmission.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: March 24, 2020
    Assignee: GENERAL ELECTRIC TECHNOLOGY GMBH
    Inventor: Carl David Barker
  • Patent number: 10594223
    Abstract: Apparatus for power conversion are provided. One apparatus includes a power converter including an input circuit and an output circuit. The power converter is configured to receive power from a source for providing power at a DC source voltage VS. The power converter is adapted to convert power from the input circuit to the output circuit at a substantially fixed voltage transformation ratio KDC=VOUT/VIN at an output current, wherein VIN is an input voltage and VOUT is an output voltage. The input circuit and at least a portion of the output circuit are connected in series across the source, such that an absolute value of the input voltage VIN applied to the input circuit is approximately equal to the absolute value of the DC source voltage VS minus a number N times the absolute value of the output voltage VOUT, where N is at least 1.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: March 17, 2020
    Assignee: VLT, Inc.
    Inventors: Patrizio Vinciarelli, Andrew D'Amico