公开(公告)号：US11901733B2

公开(公告)日：2024-02-13

申请号：US17793032

申请日：2020-08-10

Applicant: QINGYUAN POWER SUPPLY BUREAU OF GUANGDONG POWER GRID CORPORATION

Inventor： Fang Yang ,  Xiaoliang Tang ,  Yabing Zhou ,  Wanyu Ye

IPC: H02J3/01 ,  H02J3/18

CPC classification number: H02J3/01 ,  H02J3/1807

Abstract: Provided are hybrid passive power filter and a three-phase power system. The hybrid passive power filter includes: a series passive harmonic isolation unit, a parallel passive filtering unit, and a harmonic load; the series passive harmonic isolation unit has an input terminal electrically connected to a power grid and an output terminal electrically connected to a first terminal of the harmonic load, and the series passive harmonic isolation unit is configured to isolate harmonics; and the parallel passive filtering unit has an input terminal electrically connected to the output terminal of the series passive harmonic isolation unit and an output terminal electrically connected to a second terminal of the harmonic load, and the parallel passive filtering unit is configured to filter out harmonics.

公开(公告)号：US20190157871A1

公开(公告)日：2019-05-23

申请号：US16319300

申请日：2017-08-15

Applicant: NR Electric Co., Ltd ,  NR Engineering Co., Ltd

Inventor： Ruhai HUANG ,  Yu LU ,  Yunlong DONG ,  Lei PAN ,  Defeng QIU ,  Chongxue JIANG ,  Jiang LU ,  Gang LI ,  Zhaoqing HU ,  Nannan WANG ,  Jiudong DING ,  Ke WANG ,  Xianlai HU ,  Hui WANG ,  Shunke SUI

IPC: H02J3/36 ,  H02J3/18 ,  H02M7/757

CPC classification number: H02J3/36 ,  H02J3/00 ,  H02J3/1807 ,  H02J3/1814 ,  H02M7/7575

Abstract: A series compensation device suitable to double-circuit lines is disclosed. The device includes one series transformer and one converter. One converter and dual-circuit transmission lines are respectively connected to three windings of one series transformer. In the solution provided in the present application, the device can be independently installed in a power transmission system to be used as a static synchronous series compensator, and can also be used as a component of a unified power flow controller, a convertible static compensator, an interline power flow controller and a unified power quality conditioner to be connected to a power transmission system device in series. The device can save the capacity of a converter, improve the application efficiency of the series compensation device, and reduce the cost and area occupation.

公开(公告)号：US20170077799A1

公开(公告)日：2017-03-16

申请号：US15261106

申请日：2016-09-09

Applicant: UT Battelle, LLC

Inventor： Fei (Fred) Wang ,  Burak Ozpineci ,  Sheng Zheng ,  Steven L. Campbell ,  Madhu Sudhan Chinthavali ,  Aleksandar D. Dimitrovski ,  Philip R. Irminger ,  Omer C. Onar ,  Larry E. Seiber ,  Leon M. Tolbert ,  Clifford P. White ,  Daniel J. Costinett ,  Zhi Li ,  Jingxin Wang ,  Fei Yang

IPC: H02M1/32 ,  H02M3/04 ,  H02M7/04

CPC classification number: H02M1/12 ,  G05F1/33 ,  H02J3/1807 ,  H02M5/06 ,  H02M7/217 ,  H02M2003/1555

Abstract: A direct current controller includes a rectifier configured to convert alternating current input into a direct current output. A converter electrically coupled to the rectifier generates a converted direct current voltage that regulates a converted direct current from the direct current output of the rectifier and synthesizes an ac component of an alternating current grid to counteract an induced back-emf. A direct current controller central controller coupled to the converter regulates the converted direct current.

Abstract translation: 直流电流控制器包括被配置为将交流输入转换为直流输出的整流器。 电耦合到整流器的A转换器产生转换的直流电压，其调节来自整流器的直流输出的转换的直流电并且合成交流电网的交流分量以抵消感应的反电动势。 耦合到转换器的直流控制器中央控制器调节转换的直流电流。

公开(公告)号：US20160333856A1

公开(公告)日：2016-11-17

申请号：US15105967

申请日：2014-12-17

Applicant: INGETEAM POWER TECHNOLOGY, S.A.

Inventor： Francisco Javier Chivite ZABALZA ,  Carlos Girones REMIREZ ,  Ainhoa Carcar MAYOR ,  Eneko Olea OREGI ,  Jesus Lopez TABERNA

IPC: F03D9/00 ,  G05F5/00 ,  F03D9/25

CPC classification number: F03D9/255 ,  G05F5/00 ,  H02H7/06 ,  H02J3/1807 ,  H02J3/1835 ,  H02J3/386 ,  H02P9/007 ,  H02P9/102 ,  H02P9/16 ,  Y02E10/725 ,  Y02E10/763 ,  Y02E40/30

Abstract: A wind turbine that includes a housing, an asynchronous generator disposed in the housing and configured to be electrically connected to a power grid connection; a power converter circuit disposed in the housing and configured to be electrically connected to the asynchronous generator; and a variable impedance device disposed in the housing, connected to the generator and configured to limit current by varying impedance in response to a transient current. The wind turbine delivers reactive power to the power grid when the variable impedance device varies impedance in response to the transient current. The variable impedance device can be arranged in series between the asynchronous generator and the power grid connection, or can be in a shunt arrangement between the asynchronous generator and a neural point.

Abstract translation: 一种风力涡轮机，包括壳体，设置在壳体中并被配置为电连接到电网连接的异步发电机; 电源转换器电路，其设置在所述壳体中并且被配置为电连接到所述异步发电机; 以及设置在壳体中的可变阻抗装置，其连接到发电机并且被配置为通过响应于瞬态电流而改变阻抗来限制电流。 当可变阻抗装置响应于瞬态电流改变阻抗时，风力涡轮机向电网输送无功功率。 可变阻抗装置可以串联布置在异步发电机和电网连接之间，或者可以在异步发电机和神经点之间的分流装置中。

公开(公告)号：US09484833B2

公开(公告)日：2016-11-01

申请号：US14772377

申请日：2013-12-24

Applicant: STATE GRID CORPORATION OF CHINA ,  XUANCHENG POWER SUPPLY COMPANY OF STATE GRID ANHUI ELECTRIC POWER CORPORATION ,  BEIJING HUA TENG KAI YUAN ELECTRIC COMPANY LIMITED

Inventor： Yeru Zhou ,  Jian Wang ,  Dongsheng Fu ,  Xiaoma Jin ,  Dongsheng Zou ,  Jin Pan ,  Yi Song ,  Jianzhou Cheng ,  Tianwen Zheng ,  Jianming Wu ,  Hongbo Luo

IPC: H02M5/42 ,  H02M7/217 ,  H02J3/01 ,  H02J3/18 ,  H02M7/797 ,  H02M7/5387

CPC classification number: H02M7/217 ,  H02J3/01 ,  H02J3/1807 ,  H02M7/797 ,  H02M2007/53876 ,  Y02E40/30 ,  Y02E40/40

Abstract: The present invention discloses a system and a method for controlling PCS voltage and frequency, wherein the system comprises a reference voltage converter, a phase-locked loop, a grid-side voltage converter, a voltage transformer, a first proportional integral controller, a second proportional integral controller, a coordinate converter and a SVPWM generator; a reference voltage converter is connected to an output terminal of a the phase-locked loop, and the output terminal of the phase-locked loop is further connected to a grid-side voltage converter; the grid-side voltage converter is connected to a high-voltage side of an isolating transformer of the electric grid via the voltage transformer; two output terminals of the grid-side voltage converter are respectively connected to the coordinate converter via two proportional integral controllers; an output terminal of the coordinate converter is connected to the SVPWM generator; an output terminal of the SVPWM generator is connected to a power switch of the electric grid. A PWM control signal for controlling the power switch of the electric grid is generated by the reference voltage converter, the phase-locked loop, the grid-side voltage converter, the voltage transformer, the two proportional integral controllers, the coordinate converter and the SVPWM generator. The system and method for controlling PCS voltage and frequency according to the invention have the advantages that the PCS can realize voltage and frequency buildup in an off-grid state and can stably output an expected voltage and frequency.

Abstract translation: 本发明公开了一种用于控制PCS电压和频率的系统和方法，其中该系统包括参考电压转换器，锁相环，电网侧电压转换器，电压互感器，第一比例积分控制器，第二 比例积分控制器，坐标转换器和SVPWM发生器; 参考电压转换器连接到锁相环的输出端，并且锁相环的输出端进一步连接到电网侧电压转换器; 电网侧电压转换器通过变压器连接到电网隔离变压器的高压侧; 电网侧电压转换器的两个输出端子通过两个比例积分控制器分别连接到坐标转换器; 坐标转换器的输出端子连接到SVPWM发生器; SVPWM发生器的输出端子连接到电网的电源开关。 用于控制电网电源开关的PWM控制信号由参考电压转换器，锁相环，电网侧电压转换器，变压器，两个比例积分控制器，坐标转换器和SVPWM产生 发电机。 根据本发明的用于控制PCS电压和频率的系统和方法具有的优点是PCS可以在离网状态下实现电压和频率积累，并且可以稳定地输出期望的电压和频率。

公开(公告)号：US09467112B2

公开(公告)日：2016-10-11

申请号：US14340891

申请日：2014-07-25

Applicant: GE Energy Power Conversion Technology Ltd

Inventor： Bruce Edward English ,  Paul E. Marken

IPC: G05F5/00 ,  H03H7/01 ,  H02J3/18 ,  G05F3/16 ,  H02J3/24

CPC classification number: H03H7/0138 ,  G05F3/16 ,  H02J3/1807 ,  H02J3/24 ,  Y02E40/14 ,  Y02E40/30

Abstract: Provided is a series capacitor for controlling a flow of power on a transmission line, and includes a filter circuit, and a thyristor-controlled circuit, wherein an interconnection and operation of the filter circuit and the thyristor-controlled circuit are performed based on a coordination of control thereof, to connect to a series capacitor bank on a transmission line.

Abstract translation: 提供一种用于控制传输线上的电力流的串联电容器，并且包括滤波电路和晶闸管控制电路，其中基于协调来执行滤波电路和晶闸管控制电路的互连和操作 的控制，以连接到传输线上的串联电容器组。

公开(公告)号：US08890364B2

公开(公告)日：2014-11-18

申请号：US13333393

申请日：2011-12-21

Applicant: Kathleen Ann O'Brien ,  Ralph Teichmann ,  Jovan Z Bebic

Inventor： Kathleen Ann O'Brien ,  Ralph Teichmann ,  Jovan Z Bebic

IPC: H02J1/00

CPC classification number: H02J3/16 ,  H02J3/1807 ,  H02J3/383 ,  H02M5/451 ,  H02M2001/0093 ,  Y02E10/563 ,  Y02E40/34 ,  Y10T307/707

Abstract: A power plant coupled to, and configured to provide power to, an electrical grid, is described. The power plant includes a plurality of power converters electrically coupled to, and configured to receive power from, at least one power source. The power plant also includes a voltage regulation device electrically coupled between the power converters and the electrical grid. The voltage regulation device includes a series transformer and a bi-directional converter configured to regulate a voltage at an output of the power converters.

Abstract translation: 描述了耦合到并且被配置为向电网提供电力的发电设备。 发电厂包括电耦合到并且被配置为从至少一个电源接收电力的多个功率转换器。 发电厂还包括电耦合在电力转换器和电网之间的电压调节装置。 电压调节装置包括串联变压器和被配置为调节功率转换器的输出端的电压的双向转换器。

公开(公告)号：US20140247576A1

公开(公告)日：2014-09-04

申请号：US14355332

申请日：2011-10-31

Applicant: German Kuhn ,  Achim Von Seck

Inventor： German Kuhn ,  Achim Von Seck

IPC: H05K7/00

CPC classification number: H05K7/00 ,  H02B5/00 ,  H02J3/1807 ,  Y02E40/30

Abstract: A device for carrying high-voltage equipment in an electrically-insulated manner includes a carrier platform which is mounted and electrically insulated by way of support insulators. The high-voltage equipment is supported on the carrier platform. The carrier platform has primary carriers with which the platform rests on the support insulators. In order to achieve a device that prevents deflections of the carrier platform in a cost-effective manner, the high-voltage equipment is at least partially arranged in a carrier structure that is equipped with support feet, with each foot arranged vertically above a primary carrier.

Abstract translation: 用于以电绝缘方式承载高压设备的装置包括通过支撑绝缘体安装和电绝缘的载体平台。 承载平台上支持高压设备。 载体平台具有主载体，平台位于载体绝缘体上。 为了实现以成本有效的方式实现载体平台的偏转的装置，高压设备至少部分地布置在装有支撑脚的载体结构中，每个脚垂直地布置在主载体上 。

公开(公告)号：US08081406B2

公开(公告)日：2011-12-20

申请号：US12159766

申请日：2005-12-28

Applicant: Gunnar Ingeström ,  Tomas Jonsson

Inventor： Gunnar Ingeström ,  Tomas Jonsson

IPC: H02H3/00

CPC classification number: H02J3/1807 ,  H03K2217/0009 ,  Y02E40/14

Abstract: A thyristor controlled series capacitor module including a capacitor connectable in series with a power line, a thyristor valve connected in parallel with the capacitor, a breaker connected in parallel with the thyristor valve, and an inductor. By providing a simplified breaker arrangement, the number of components is reduced.

Abstract translation: 一种晶闸管控制的串联电容器模块，包括可与电源线串联的电容器，与电容器并联连接的晶闸管阀，与晶闸管阀并联连接的断路器和电感器。 通过提供简化的断路器布置，部件的数量减少。

公开(公告)号：US07859232B2

公开(公告)日：2010-12-28

申请号：US11666675

申请日：2005-10-20

Applicant: Bertil Berggren ,  Mojtaba Noroozian

Inventor： Bertil Berggren ,  Mojtaba Noroozian

IPC: G05F5/04

CPC classification number: H02J3/1878 ,  H02J3/1807 ,  H02J3/1814 ,  Y02E40/10 ,  Y02E40/18 ,  Y02E40/30

Abstract: An apparatus for controlling a power flow in a high voltage network. A phase shifting transformer includes a tap changer.

Abstract translation: 一种用于控制高压网络中的功率流的装置。 相移变压器包括分接开关。