公开(公告)号：US20190245353A1

公开(公告)日：2019-08-08

申请号：US16280756

申请日：2019-02-20

申请人： Rajiv Kumar VARMA

发明人： Rajiv Kumar VARMA ,  Vinod KHADKIKAR ,  Shah Arifur RAHMAN

IPC分类号： H02J3/38 ,  H02J3/01 ,  H02J3/18 ,  H02J3/40 ,  H02M7/44 ,  H02J9/00

CPC分类号： H02J3/383 ,  H02J3/01 ,  H02J3/1842 ,  H02J3/386 ,  H02J3/40 ,  H02J9/00 ,  H02M7/44 ,  Y02E10/563 ,  Y02E40/16 ,  Y02E40/22 ,  Y02E40/40 ,  Y10T307/615

摘要： The invention provides a method and system for operating a solar farm inverter as a Flexible AC Transmission System (FACTS) device—a STATCOM—for voltage control. The solar farm inverter can provide voltage regulation, damping enhancement, stability improvement and other benefits provided by FACTS devices. In one embodiment, the solar farm operating as a STATCOM at night is employed to increase the connectivity of neighbouring wind farms that produce peak power at night due to high winds, but are unable to connect due to voltage regulation issues. The present invention can also operate during the day because there remains inverter capacity after real power export by the solar farm. Additional auxiliary controllers are incorporated in the solar farm inverter to enhance damping and stability, and provide other benefits provided by FACTS devices.

公开(公告)号：US20190058429A1

公开(公告)日：2019-02-21

申请号：US16167953

申请日：2018-10-23

申请人： Rolls-Royce North American Technologies Inc.

发明人： Mark Jon Blackwelder ,  Paul M. Rancuret

IPC分类号： H02P23/04 ,  H02J3/24

CPC分类号： H02P23/04 ,  H02J3/01 ,  H02J3/24 ,  Y02E40/40

摘要： Methods and systems are provided to damp oscillations in a synchronous alternating current (AC) grid. Current may be received from the synchronous AC grid through a phase of an n-phase supply line. The current received from the synchronous AC grid is supplied to a phase of the synchronous motor. A sub-harmonic oscillation may be detected in the current received from the synchronous AC grid. The sub-harmonic oscillation may be damped by: shunting a portion of the current away from the phase of the synchronous motor during a first time period in an upper-half of the sub-harmonic oscillation, and/or supplying compensation current from a partial power converter to the phase of the synchronous motor during a second time period in a lower-half of the sub-harmonic oscillation.

公开(公告)号：US10063137B2

公开(公告)日：2018-08-28

申请号：US15585215

申请日：2017-05-03

申请人： LSIS CO., LTD.

发明人： Yong-Kil Choi

IPC分类号： H02M1/42 ,  G01R25/00 ,  H02J3/01 ,  H02J3/18

CPC分类号： H02M1/42 ,  G01R25/00 ,  H02J3/01 ,  H02J3/1864 ,  Y02E40/12 ,  Y02E40/30 ,  Y02E40/40 ,  Y02P80/112

摘要： The present disclosure relates a reactive power compensation system including a detection unit for acquiring loading state information of a plurality of loads, a reactive power compensation unit for compensating reactive power, and a controller for controlling the reactive power compensation unit to perform flicker compensation or power factor compensation based on a control signal according to the loading state information.

公开(公告)号：US09971315B2

公开(公告)日：2018-05-15

申请号：US14385330

申请日：2012-04-10

申请人： Jörgen Olsson ,  Mikael Appelberg ,  Martin Svensson

发明人： Jörgen Olsson ,  Mikael Appelberg ,  Martin Svensson

IPC分类号： H02B1/24 ,  H01H35/00 ,  H02H3/00 ,  H01H47/00 ,  G05B9/02 ,  H03G1/00 ,  H02J1/02 ,  H02J3/01 ,  H03H7/01 ,  H02M1/15

CPC分类号： G05B9/02 ,  H02J1/02 ,  H02J3/01 ,  H02M1/15 ,  H03G1/00 ,  H03H7/0107 ,  Y02E40/40 ,  Y10T307/826 ,  Y10T307/865

摘要： An electronic circuit comprising an ACRF comprising an active component, an energy storage unit, an input port and an output port. The electronic circuit comprises a control unit to control the ACRF. A detector detects a short circuit at the input port or the absence of an energy supply at the input port. The control unit controls the ACRF to function as an ACRF if the detector detects a power supply connected to the input port or that there is no short circuit at the input port, and controls the ACRF to stop functioning as an ACRF and to discharge energy from its energy storage unit to its output port if the detector detects a short circuit at the input port or no power supply connected to the input port.

公开(公告)号：US09728961B2

公开(公告)日：2017-08-08

申请号：US13265053

申请日：2010-04-20

申请人： Gerald Hehenberger

发明人： Gerald Hehenberger

IPC分类号： F03D9/00 ,  H02J3/01 ,  H02J3/18 ,  F03D9/11 ,  F03D9/25

CPC分类号： H02J3/01 ,  F03D9/11 ,  F03D9/255 ,  F03D15/10 ,  F05B2260/76 ,  H02J3/1842 ,  Y02E10/72 ,  Y02E10/763 ,  Y02E40/22 ,  Y02E40/40

摘要： The invention relates to an energy generating installation, especially a wind power station, comprising a drive shaft connected to a rotor (1), a generator (8) and a differential transmission (11 to 13) provided with three drives or outputs. A first drive is connected to the drive shaft, an output is connected to a generator (8), and a second drive is connected to an electrical differential drive (6, 14). The differential drive (6, 14) is connected to a network (10) by means of a frequency converter (7, 15) comprising an electrical energy accumulator in the direct-current intermediate circuit.

公开(公告)号：US20170169917A1

公开(公告)日：2017-06-15

申请号：US15322255

申请日：2015-06-29

申请人： Guangrong Luo

发明人： Guangrong Luo ,  Changyong Liang ,  Hua Zhang ,  Jianyu Wang ,  Wenyong Zhong ,  Xiaobo Liu ,  Fengzhu Zhang ,  Wenwei Xin ,  Yi Ji ,  Tian Luo

IPC分类号： H01B7/02 ,  H02J3/01 ,  H02J1/08 ,  H02J1/02

CPC分类号： H01B7/0208 ,  H01B7/0241 ,  H01B7/0275 ,  H02J1/02 ,  H02J1/08 ,  H02J3/01 ,  Y02E40/40

摘要： It is found and confirmed that a harmonic wave source is a traditionally-used multi-core wire with mutually-exposed core wires. By using a multi-core wire or a single-core wire with mutually-insulated core wires to replace the traditionally-used multi-core wire, a large number of harmonic waves produced by the mutually-exposed core wires can be avoided, the working quality of a power utilization device and an electric energy and electrical signal transmission network is improved at low costs, and electric energy is saved. A method for using a lead wire structure with insulated core wires is used to avoid harmonic ripple noise produced in seamed transmission, or to avoid electric energy waste caused by harmonic ripple noise produced in seamed transmission, or to avoid the influence of harmonic ripple noise produced in seamed transmission on the working quality of a power utilization device or an electric energy and/or electrical signal transmission network. A power utilization device other than an earphone and an electric energy and electrical signal transmission network system, comprising a multi-core transmission lead wire, wherein one or some or all of core wires of the multi-core transmission lead wire are mutually insulated.

公开(公告)号：US20170133845A1

公开(公告)日：2017-05-11

申请号：US15413125

申请日：2017-01-23

申请人： ABB Schweiz AG

发明人： Tobias Geyer ,  Wim Van-Der-Merwe ,  Vedrana Spudic ,  Georgios Darivianakis

IPC分类号： H02J3/01 ,  H02M1/12 ,  G05B13/04 ,  H02M1/08

CPC分类号： H02J3/01 ,  G05B13/048 ,  H02J3/1821 ,  H02J2003/007 ,  H02M1/08 ,  H02M1/12 ,  H02M7/53873 ,  H02M7/539 ,  H02M7/5395 ,  H02M2007/4835 ,  Y02E40/22 ,  Y02E40/26 ,  Y02E40/30 ,  Y02E40/40

摘要： A method for controlling a modular converter connected to an electrical grid for active power filtering the electrical grid to compensate for a load connected to the electrical grid, comprises: receiving an actual load current and an actual converter state of the modular converter; determining, from the actual I load current and a history of previous load currents, a sequence of future load currents over a prediction horizon; predicting a sequence of future converter states of the modular converter and a sequence of manipulated variables for the modular converter over the prediction horizon by solving an optimization problem based on the actual converter state and the future load currents by minimizing an objective function mapping control objectives to a scalar performance index subject to the dynamical evolution of a prediction model of the modular converter and subject to constraints; and applying a next switching state, which is determined from a first element of the sequence of manipulated variables, to the modular converter.

公开(公告)号：US20170054362A1

公开(公告)日：2017-02-23

申请号：US15063175

申请日：2016-03-07

申请人： LSIS CO., LTD.

发明人： KYUNG BIN LEE

IPC分类号： H02M1/42 ,  G01R21/00

CPC分类号： H02M1/4208 ,  H02J3/01 ,  H02J3/1828 ,  Y02E40/12 ,  Y02E40/40

摘要： A static varr compensation apparatus including: a plurality of capacitor banks supplying three-phase alternating current (AC) power; a plurality of bidirectional thyristors opening and closing the plurality of capacitor banks; and a controller calculating an amount of reactive power necessary to be compensated and controlling the plurality of bidirectional thyristors to open and close the plurality of capacitor banks in correspondence to the calculated amount of reactive power, wherein the plurality of capacitor banks are in a structure of Y connection.

摘要翻译： 一种静态变压器补偿装置，包括：提供三相交流（AC）电力的多个电容器组; 多个双向晶闸管，其开闭所述多个电容器组; 以及控制器，用于计算要补偿的无功功率量，并根据计算出的无功功率量控制多个双向晶闸管来打开和关闭多个电容器组，其中多个电容器组的结构为 Y连接。

公开(公告)号：US09548611B2

公开(公告)日：2017-01-17

申请号：US14135255

申请日：2013-12-19

申请人： Hyundai Autron Co., Ltd.

发明人： Hyun-Seok Park ,  Sung-Mog Yu ,  Jin-Ho Cho

IPC分类号： H02J3/01 ,  H02J1/00

CPC分类号： H02J3/01 ,  H02J2001/004 ,  Y02E40/40 ,  Y10T307/718

摘要： Disclosed herein is a method for generating an injected current of a fuel cell stack performed in an apparatus for generating an injected current of a fuel cell stack, the method including: extracting a first frequency current and a second frequency current by passing alternating currents of different frequencies through a plurality of filters, respectively; generating a summed frequency current by summing the first frequency current and the second frequency current; and applying the summed frequency current to the fuel cell stack. Therefore, it is possible to operate the fuel cell stack by applying the summed current obtained by summing the alternating current for calculating the total harmonic distortion (THD) and the alternating current for calculating the impedance to the fuel cell stack.

摘要翻译： 本发明公开了一种在用于产生燃料电池堆的注入电流的装置中产生燃料电池堆的注入电流的方法，该方法包括：通过使不同的交流电流通过交流电流来提取第一频率电流和第二频率电流 频率分别通过多个滤波器; 通过对所述第一频率电流和所述第二频率电流求和来产生相加的频率电流; 以及将所述相加的频率电流施加到所述燃料电池堆。 因此，可以通过将通过求和用于计算总谐波失真（THD）的交流电和将用于计算燃料电池堆的阻抗的交流电应用得到的相加电流来操作燃料电池堆。

公开(公告)号：US20160276845A1

公开(公告)日：2016-09-22

申请号：US15067283

申请日：2016-03-11

申请人： Advanced Charging Technologies Inc.

发明人： NASSER HASAN KUTKUT

IPC分类号： H02J7/00 ,  H02M1/42 ,  H02M7/44

CPC分类号： H02J7/0013 ,  H02J3/01 ,  H02J7/0018 ,  H02J7/02 ,  H02M1/42 ,  H02M7/44 ,  Y02E40/40

摘要： A system for charging at least one battery may include a power and data communication bus including a plurality of AC and DC power lines and data communication lines, and a plurality of modular ports coupled thereto. Charging power modules and an inverter module(s) may be coupled to respective modular ports of the power and data communication bus. A central controller may be configured to communicate with the charging power modules and the inverter module(s) through the data communication lines, identify the charging power modules and the inverter module(s) coupled to the modular ports, along with respective functions and power ratings associated therewith, and selectively control the charging power modules and the inverter module(s) based upon their identified functions and power ratings to charge the at least one battery via the DC power lines and provide AC power back to the AC source.

摘要翻译： 用于对至少一个电池充电的系统可以包括包括多个AC和DC电力线和数据通信线路的电力和数据通信总线以及耦合到其上的多个模块化端口。 充电电源模块和逆变器模块可以耦合到电力和数据通信总线的相应模块化端口。 中央控制器可以被配置为通过数据通信线路与充电功率模块和逆变器模块通信，识别连接到模块化端口的充电功率模块和逆变器模块以及相应的功能和功率 并且基于它们所识别的功能和功率额定值选择性地控制充电功率模块和逆变器模块，以经由DC电力线对至少一个电池充电并且将交流电力提供给AC电源。