公开(公告)号：US10090701B2

公开(公告)日：2018-10-02

申请号：US14822738

申请日：2015-08-10

申请人： FUJI ELECTRIC CO., LTD.

发明人： Ryuji Yamada ,  Koji Kawaguchi

IPC分类号： H02J3/32 ,  H02J3/34 ,  H02J7/35 ,  G05F1/67 ,  H02M3/158 ,  H02J3/38

摘要： A solar power generation system includes a plurality of solar cell groups, a plurality of chopper units each of which corresponds to one of the plurality of solar cell groups and raises a DC voltage obtained from the corresponding solar cell group. Each of the plurality of chopper units includes a first operating point control unit that respectively controls an output current of the corresponding chopper unit to optimize an operating point of each of the plurality of solar cell groups so as to obtain maximum power from the respective solar cell groups, and an inverter, which receives the DC voltage obtained from the plurality of chopper units and outputs AC power. The inverter includes a second operating point control unit that controls the DC voltage obtained from the plurality of chopper units to optimize the operating point of each of the plurality of solar cell groups.

公开(公告)号：US10063090B2

公开(公告)日：2018-08-28

申请号：US15027095

申请日：2014-10-22

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Tatsuya Miyoshi

IPC分类号： H02J7/00 ,  H01M10/44 ,  H01M10/46 ,  H02J7/35 ,  G05F1/67 ,  H02S40/38

CPC分类号： H02J7/35 ,  G05F1/67 ,  H02J7/0029 ,  H02J7/0052 ,  H02J7/007 ,  H02J2007/0037 ,  H02J2007/0059 ,  H02S40/38 ,  Y02E10/58

摘要： A solar power generation device is provided which includes a first DC-DC converter to which an output of a solar battery is input, a storage battery to which an output of the first DC-DC converter is input, a second DC-DC converter that converts a voltage of the storage battery, and a control unit. The control unit changes a duty ratio of the first DC-DC converter so as not to charge the storage battery and changes a duty ratio of the second DC-DC converter so as to set an operating point of the solar battery to a maximum power point, when a value indicating a state of charge of the storage battery is equal to or greater than a predetermined value.

公开(公告)号：US20180191161A1

公开(公告)日：2018-07-05

申请号：US15738568

申请日：2016-06-23

申请人： HYOSUNG CORPORATION

发明人： Geon Ho AN ,  In Sun CHOI ,  Myong Hoe KIM ,  Dong Jun WON ,  Jin Young CHOI ,  Jin Sun YANG

IPC分类号： H02J3/32 ,  G05B13/04 ,  G06Q50/06 ,  H02J7/00 ,  G01R31/36 ,  H01M10/44 ,  G05F1/67

CPC分类号： H02J3/32 ,  G01R31/382 ,  G05B13/048 ,  G05F1/67 ,  G06Q30/08 ,  G06Q50/06 ,  H01M10/441 ,  H02J7/0068

摘要： The present invention relates to a large capacity battery system for managing a large capacity battery used for power system frequency regulation and a large capacity battery operation method. A method for operating a large capacity battery used for power system frequency regulation in a large capacity battery system for managing the large capacity battery according to the present invention comprises the steps of: calculating an estimated frequency regulation signal for the next day using history information of past frequency regulation signals; calculating a bidding capacity and a basic value for the large capacity battery, matched to the estimated frequency regulation signal; determining an operation plan using the calculated bidding capacity and basic value; bidding the bidding capacity and basic value for the large capacity battery according to the operation plan on the day-ahead frequency regulation market; and when the bidding of the bidding capacity and basic value for the large capacity battery has been successful on the day-ahead frequency regulation market, receiving a frequency regulation signal from the real-time frequency regulation market and storing the same, and operating the large capacity battery according to the received frequency regulation signal.

公开(公告)号：US20180131238A1

公开(公告)日：2018-05-10

申请号：US15799933

申请日：2017-10-31

申请人： ENERGOUS CORPORATION

发明人： Michael A. Leabman

IPC分类号： H02M7/06 ,  H02M3/156 ,  H02M7/217 ,  G05F1/67 ,  H02M3/158 ,  H02M1/00

CPC分类号： H02J50/20 ,  H02J7/025 ,  H02J50/80 ,  H02M3/156 ,  H02M3/1588 ,  H02M7/06 ,  H02M7/066 ,  H02M7/217 ,  H02M2001/0022 ,  H02M2001/007 ,  Y02B70/1466

摘要： An exemplary method of receiving wireless power from a wireless power transmitter includes, at a wireless power receiver having a controller, an antenna, a rectifier coupled with the antenna, and a boost converter coupled with the rectifier: (i) rectifying, by the rectifier, energy from wireless power transmission waves received by the antenna into a first voltage, (ii) increasing, by the boost converter, the first voltage to a second voltage based on instructions from the controller, and (iii) controlling, by the controller, an amount of increase in voltage from the first voltage to the second voltage based on a comparison.

公开(公告)号：US20180115165A1

公开(公告)日：2018-04-26

申请号：US15567771

申请日：2016-02-23

申请人： OMRON Corporation

发明人： Yoshihiko YAMAGUCHI ,  Makoto OHASHI ,  Osamu UCHIDA ,  Akihiro TAKESHIMA ,  Takashi KITAMURA

IPC分类号： H02J3/38 ,  G05F1/67 ,  H02J7/35 ,  H02M3/00

CPC分类号： H02J3/385 ,  G05F1/67 ,  H02J7/35 ,  H02M3/00 ,  Y02E10/566 ,  Y02E10/58

摘要： A rechargeable battery controller is combined with a rechargeable battery and used in an existing PV system. The controller includes a DC-DC converter, which allows power to be passed between a power line and a rechargeable battery, and a control unit, which determines whether maximum power point tracking (MPPT) control using hill climbing is being performed by a PCS based on an input voltage or current value of the PCS. The control unit regulates charge/discharge power of the rechargeable battery to allow input power of the PCS to be a target value based on the input voltage and current values of the PCS while MPPT control using hill climbing is performed, and maintains, in a period during which MPPT control using hill climbing is not performed, the charge/discharge power to be the power at a beginning of the period.

公开(公告)号：US09906079B2

公开(公告)日：2018-02-27

申请号：US14523873

申请日：2014-10-25

申请人： Renesas Electronics Corporation

发明人： Koichiro Noguchi ,  Koichi Nose ,  Yoshifumi Ikenaga ,  Yoichi Yoshida

IPC分类号： H02J17/00 ,  H02J50/20 ,  H02J50/40 ,  G05F1/67 ,  H02M7/217 ,  H02M1/00

CPC分类号： H02J50/20 ,  G05F1/67 ,  H02J17/00 ,  H02J50/40 ,  H02M7/217 ,  H02M2001/0003 ,  Y10T307/549

摘要： There is a problem in the prior semiconductor devices that energy recovery efficiency is low. According to one embodiment of the present invention, a power supply circuit includes an alternating-current signal synthesis unit including a plurality of alternating-current coupling elements having primary sides to which respective input alternating-current signals are input and secondary sides connected in series with each other, and a control circuit that outputs an input selection signal specifying a combination of the input alternating-current signals to be synthesized. The control circuit generates the input selection signal so as to maximize the output alternating-current signal synthesized by the alternating-current synthesis signal unit.

公开(公告)号：US09787170B2

公开(公告)日：2017-10-10

申请号：US14366042

申请日：2012-09-26

申请人： Sadayuki Inoue ,  Hideki Kawano

发明人： Sadayuki Inoue ,  Hideki Kawano

IPC分类号： G05F1/67 ,  H02J3/46 ,  H02J7/35 ,  H02M1/10 ,  H02M7/42 ,  H02M1/00 ,  H02J3/32 ,  H02M7/48 ,  H02J3/38 ,  H02J7/00 ,  H02M3/02

CPC分类号： H02M1/00 ,  G05F1/67 ,  H02J3/32 ,  H02J3/385 ,  H02J3/46 ,  H02J7/00 ,  H02J7/35 ,  H02M1/10 ,  H02M3/02 ,  H02M7/42 ,  H02M7/48 ,  H02M2001/007 ,  Y02E10/58 ,  Y02E70/30 ,  Y10T307/344 ,  Y10T307/352 ,  Y10T307/359

摘要： Provided are a solar panel (1), a first DC/DC conversion circuit (13), a DC/AC conversion circuit (21) connected via a DC bus (25), a second DC/DC conversion circuit (17) for controlling bus voltage in the case of power outage, a first control section (14) having two kinds of control modes and controlling the first DC/DC conversion circuit (13), a second control section (18) for controlling the second DC/DC conversion circuit (17), and a third control section (22) for controlling the DC/AC conversion circuit (21). The second control section (18) controls bus voltage in the case of power outage, and the first control section (14) switches the control mode based on information of the second control section (18).

公开(公告)号：US20170255172A1

公开(公告)日：2017-09-07

申请号：US15295787

申请日：2016-10-17

申请人： Drift Marketplace, Inc.

发明人： Herbert Alan Tilley ,  Gregory William Robinson ,  Edwin Eugene McKenzie

IPC分类号： G05B15/02 ,  G06Q30/02 ,  H02S20/10 ,  F24J2/38 ,  H02S20/32 ,  G05F1/67 ,  F24J2/54

CPC分类号： G05B15/02 ,  F24S30/452 ,  F24S50/20 ,  F24S2030/145 ,  F24S2201/00 ,  G05F1/67 ,  H02S20/10 ,  H02S20/32 ,  Y02E10/47 ,  Y02E10/58 ,  Y10T29/49355

摘要： Systems and methods that provide trackers and tracking assemblies having node managers, such as smart node managers are described herein. Aspects of the disclosure are directed to an autonomous energy distribution network including a plurality of solar tracker devices configured to receive solar energy and transform the solar energy into electrical energy, where each of the solar tracker devices is directly connected to a node in a power distribution grid. The network also includes a node manager configured to receive status information from the solar trackers, where the status information includes information regarding the state of the node to which each of the solar tracker device are directly connected.

公开(公告)号：US09710005B2

公开(公告)日：2017-07-18

申请号：US14529965

申请日：2014-10-31

申请人： SunPower Corporation

发明人： Keith Johnston ,  Nicholas Ford

IPC分类号： H05H5/00 ,  G05F1/67 ,  H02J1/00 ,  H02J3/38 ,  H02M7/42

CPC分类号： G05F1/67 ,  H02J1/00 ,  H02J3/385 ,  H02M7/42 ,  Y02E10/58

摘要： A photovoltaic (PV) system can include strings of PV collection devices. A positive parallel bus can be coupled to positive terminals of first and second strings and a negative parallel bus can be coupled to negative terminals of first and second strings.

公开(公告)号：US09685789B2

公开(公告)日：2017-06-20

申请号：US14209882

申请日：2014-03-13

申请人： The Board of Trustees of the Leland Stanford Junior University

发明人： William J. Dally ,  Darren Hau ,  Vivek Choksi ,  Andrew J. Ponec ,  Christopher Ling

IPC分类号： H02J3/38 ,  G05F1/67 ,  H02M3/335

CPC分类号： H02J3/383 ,  G05F1/67 ,  H02J3/385 ,  H02M3/3353 ,  Y02E10/563 ,  Y02E10/58 ,  Y10T307/609 ,  Y10T307/691 ,  Y10T307/707

摘要： Various example embodiments are directed to methods and apparatuses for diverting current from a Photovoltaic (PV) module. In particular embodiments, the PV module can be part of a series connection (or string) of PV modules. The series connection provides a primary current path through which generated current flows. Current diversion circuit(s) can be used in connection with one or more PV modules. The current diversion circuit detects when the current through the primary current path is less than the desired current level for a corresponding PV module (e.g., the maximum power point). In response to this detection, the current diversion circuit can provide an alternate pathway for current from the corresponding PV module. This results in an overall increase in the current from the PV module and a corresponding increase in efficiency.