公开(公告)号：US20240364118A1

公开(公告)日：2024-10-31

申请号：US18765051

申请日：2024-07-05

申请人： Huawei Digital Power Technologies Co., Ltd.

发明人： Francisco Daniel Freijedo Fernández

IPC分类号： H02J3/50 ,  H02J3/38

CPC分类号： H02J3/50 ,  H02J3/381 ,  H02J2300/28

摘要： An active power conversion apparatus (APCA) is configured to estimate the grid frequency estimation of an electric grid connected to the APCA. The APCA includes a controller configured to receive measurements of at least one phase current between the APCA, and the electric grid. The controller is further configured to convert the at least one phase current to at least one synchronous reference frame, and determine direct and quadrature current references to be used in the frequency estimation. The controller is further configured to determine the use of frequency estimation as a manipulated variable that forces to zero at least one of the average values of current error signals. The APCA provides frequency control services in the electric grid that is equipped with the energy storage resource.

公开(公告)号：US20240364114A1

公开(公告)日：2024-10-31

申请号：US18764810

申请日：2024-07-05

申请人： Johan BENDIEN ,  Martin PÖLÖSKEY

发明人： Johan BENDIEN ,  Martin PÖLÖSKEY

IPC分类号： H02J3/38 ,  G05B19/042 ,  H02J3/00

CPC分类号： H02J3/381 ,  G05B19/042 ,  H02J3/003 ,  H02J3/004 ,  G05B2219/2639 ,  H02J2300/24 ,  H02J2300/28

摘要： A controller for a DC microgrid and associated renewable energy source, RES, units. The DC microgrid comprises energy storage, ES, units and consumer units that are interconnected by a DC distribution network. The DC microgrid is connected to an AC grid to allow power to flow between the DC microgrid and the AC grid. The controller has three levels: a first for controlling daily operations, a second for making optimizing adjustments to the first level control based on historical data and the weather forecast, and a third which is an analysis level for modelling how changes in provision of the number of RES units and ES units would affect the DC microgrid's dependency on power from the AC grid. The output of the third level thus enables incremental changes to be made to provision in order to reduce, ideally eliminate, the net power demand from the AC grid.

公开(公告)号：US20240364109A1

公开(公告)日：2024-10-31

申请号：US18610289

申请日：2024-03-20

申请人： JBB Advanced Technologies, LLC

发明人： John Taylor Billingsley, JR. ,  Ronald Lyle Chichester ,  Jason Alexander Novack

IPC分类号： H02J3/00 ,  H02J3/38 ,  H04L67/104 ,  H04L67/1097

CPC分类号： H02J3/004 ,  H02J3/003 ,  H02J3/381 ,  H04L67/104 ,  H04L67/1097 ,  H02J2300/24 ,  H02J2300/28

摘要： An energy monitoring device is disclosed. The monitoring device includes a network communication module, a date-time module, an electric power measurement module, a memory module, and a transaction construction module. The network communication module allows the energy monitoring device to communicate with another device on a peer-to-peer network. The date-time module keeps track of local date/time information. The electric power measurement module measures an amount of electric power produced/consumed by a power-generating/power-consuming entity. The transaction construction module constructs a blockchain transaction that incorporates the unique cryptographic identifier, the local date/time information, and the measured amount of electric power produced/consumed, and then places the blockchain transaction onto the 2peer-to-peer network for verification by a one or more nodes that comprises a blockchain.

公开(公告)号：US20240360741A1

公开(公告)日：2024-10-31

申请号：US18307399

申请日：2023-04-26

申请人： Patterson-UTI Drilling Company LLC

发明人： Marcel Snijder Van Wissenkerke ,  Ronald Barbee ,  Nathaniel Norris ,  Faramarz Motallebzadeh ,  Johnathan Eichelman

IPC分类号： E21B41/00 ,  H02J3/28 ,  H02J3/38

CPC分类号： E21B41/0085 ,  H02J3/28 ,  H02J3/381

摘要： A method of operating a drilling rig (that includes electrically powered equipment) and an energy supply system (that includes a battery storage, one or more generators, and an electrical bus that powers the drilling rig) includes: determining, by the energy supply system, a power demand of the drilling rig; comparing the power demand to a battery power threshold. When the power demand is less than or equal to the battery power threshold, the energy supply system enters a stealth mode by deactivating and disconnecting all generators from the electrical bus and powering the electrical bus and the drilling rig with only the battery storage. When the power demand is greater than the battery power threshold, the energy supply system powers the electrical bus with at least one of the one or more generators. The battery power threshold is based on a maximum power output rating of the battery storage.

公开(公告)号：US12132320B2

公开(公告)日：2024-10-29

申请号：US17778223

申请日：2019-11-22

申请人： Nippon Telegraph and Telephone Corporation

发明人： Naoki Hanaoka ,  Hidetoshi Takada ,  Toshihiro Hayashi

IPC分类号： H02J3/38 ,  H02J3/00 ,  H02J3/32

CPC分类号： H02J3/381 ,  H02J3/003 ,  H02J3/32 ,  H02J2300/20

摘要： Disclosed is a power management device including a monitoring unit configured to monitor power usage statuses of a plurality of sites individually, a determination unit configured to determine whether to supply the surplus power to a second site of the plurality of sites when the monitoring unit detects that surplus power is generated in a first site of the plurality of sites in accordance with a prediction of a power transmission loss between the first site and the second site, and a site control unit configured to instruct the first site to supply the surplus power to the second site when the determination unit determines that the surplus power is to be supplied to the second site.

公开(公告)号：US12132319B2

公开(公告)日：2024-10-29

申请号：US17690624

申请日：2022-03-09

申请人： Enphase Energy, Inc.

发明人： Khalegh Mozaffari ,  Fernando Rodriguez ,  Patrick Lyle Chapman

IPC分类号： H02M7/00 ,  H02J3/38 ,  H02M7/48

CPC分类号： H02J3/381 ,  H02M7/4807 ,  H02J2300/24

摘要： A partial-resonant converter is provided herein and comprises a partial resonant link formed by a magnetizing link inductor connected in parallel with a first capacitor on a primary winding side of a transformer and a second capacitor on a secondary winding side of the transformer, a pair of series connected switches coupled across the magnetizing link inductor and the first capacitor, and a plurality of forward conducting bidirectional blocking switches that connect an input source and an output load to the magnetizing link inductor during operation.

公开(公告)号：US12132318B2

公开(公告)日：2024-10-29

申请号：US17629037

申请日：2020-02-18

申请人： OMRON CORPORATION

发明人： Hideaki Kojima ,  Ryo Ogura ,  Mitsunori Sugiura

IPC分类号： H02J3/38 ,  H02H7/20 ,  H02H7/26

CPC分类号： H02J3/381 ,  H02H7/20 ,  H02H7/26 ,  H02J2300/24

摘要： A solar power generation network shut-off unit is disposed between a plurality of solar power generation modules and a power conditioner, shuts off the supply of power the power generation modules to the power conditioner when an emergency shut-off button is pressed, and comprises a first circuit breaker, second circuit breakers, and a power supply line. When the first circuit breaker detects that the emergency shut-off button has been pressed, the supply of power from the first circuit breaker to the second circuit breakers is halted, and the supply of power from the solar power generation modules through the power line is shut off at the second circuit breakers.

公开(公告)号：US20240356335A1

公开(公告)日：2024-10-24

申请号：US18038990

申请日：2022-10-11

申请人： State Grid Jiangsu Electric Power Co.,Ltd. Research Institute ,  STATE GRID JIANGSU ELECTRIC POWER CO., LTD. ,  TAIZHOU POWER SUPPLY BRANCH OF STATE GRID JIANGSU ELECTRIC POWER CO., LTD. ,  JIANGSU ELECTRIC POWER RESEARCH INSTITUTE CO., LTD.

发明人： Yongling LU ,  Zhen WANG ,  Chengbo HU ,  Jinggang YANG ,  Jun JIA ,  Guojiang ZHANG ,  Rong SUN ,  Hui FU ,  Rushan WANG ,  Ting CHEN ,  Nan YAO ,  Ziquan LIU ,  Xueqiong ZHU ,  Hai XUE

IPC分类号： H02J3/38 ,  H02J7/34 ,  H02N2/18 ,  H02S10/12

CPC分类号： H02J3/38 ,  H02N2/186 ,  H02S10/12 ,  H02J7/345 ,  H02J2207/50

摘要： A micro-power wind-solar hybrid energy harvesting and power generating device including a solar power generation module, a wind power generation module, a control module, an energy storage module, and an accessory structure are provided. The solar power generation module is mainly composed of a solar thin film cell and a corresponding interface control circuit, and the wind power generation module includes a wind-induced vibration structure, a cantilever beam structure, a piezoelectric element, and a corresponding interface control circuit. The solar thin film cell is mounted at a top of the wind-induced vibration structure, and interface control circuits, the energy storage module, etc. are all arranged inside the wind-induced vibration structure. The control module is configured to handle an energy harvesting and power generating algorithm of the wind-solar hybrid power generating device to maximize the power generation quality and the power generation efficiency of the device.

公开(公告)号：US12126301B2

公开(公告)日：2024-10-22

申请号：US17861823

申请日：2022-07-11

申请人： GAF Energy LLC

发明人： Richard Perkins ,  Babak Farhangi

IPC分类号： H02J50/12 ,  H02J50/40 ,  H02S20/23 ,  H02S40/30 ,  H02J3/38

CPC分类号： H02S40/30 ,  H02J50/12 ,  H02J50/40 ,  H02S20/23 ,  H02J3/381 ,  H02J2300/24

摘要： A roof mountable photovoltaic system, wherein electrical energy is transferred from multiple direct current generating sources to at least one wireless energy receiver device through some separated distance. The system is configured such that electrical energy can be transferred even through an obstruction, such as several layers of roofing material, to the wireless energy receiver device. In some embodiments, there are fewer wireless energy receiver devices than the direct current generating sources. In some embodiments, the wireless energy receiver device can include one or more inductive windings, antennae, or a combination thereof, which can couple with the windings, antennae, or a combination thereof of the wireless transmitter(s) to transfer electrical energy from the transmitters to the one or more receivers without direct electrical or physical connection.

公开(公告)号：US12126298B2

公开(公告)日：2024-10-22

申请号：US17617214

申请日：2020-06-05

申请人： GE Energy Power Conversion Technology Limited

发明人： Kai A. Rothenhagen ,  Aurelie Bocquel

IPC分类号： H02P9/00 ,  H02J3/38 ,  H02K1/16 ,  H02K3/28

CPC分类号： H02P9/007 ,  H02J3/388 ,  H02K1/16 ,  H02K3/28

摘要： A doubly-fed induction generator (DFIG) system is described. The DFIG system includes an induction electric machine including a stator having a stator winding and a rotor having a rotor winding. The stator winding is electrically connected to at least one output terminal and the rotor winding is electrically connected to the at least one output terminal by means of a power converter. The power converter includes a first active rectifier/inverter with alternating current AC terminals electrically connected to the rotor winding, and direct current DC terminals, and a second active rectifier/inverter with DC terminals electrically connected to the DC terminals of the first active rectifier/inverter by a DC link, and AC terminals electrically connected to the at least one output terminal. A controller is adapted to control the first active rectifier/inverter so that the frequency of the AC current at its AC terminals is substantially constant during at least one of a “line charging mode” and an “islanded mode”.