公开(公告)号：US07940131B2

公开(公告)日：2011-05-10

申请号：US12196794

申请日：2008-08-22

Applicant: Haiqing Weng ,  John D. D'Atre ,  Robert A. Seymour ,  Allen M. Ritter ,  Xiaoming Yuan ,  Renchang Dai ,  Robert W. Delmerico

Inventor： Haiqing Weng ,  John D. D'Atre ,  Robert A. Seymour ,  Allen M. Ritter ,  Xiaoming Yuan ,  Renchang Dai ,  Robert W. Delmerico

IPC: G05F1/70

CPC classification number: G01R19/2513 ,  H04B2203/5466

Abstract: An apparatus for rapidly tracking fundamental frequency information in the signal of an electric grid is a cross-coupled phase-lock loop filter (CCPLL) that includes the use of a phase-lock-loop (PLL) apparatus having a plurality individual filters, wherein an input for a first filter in the plurality of individual filters comprises the signal of the electric grid and an output signal from at least a second filter in the plurality of individual filters. A method for using the CCPLL includes applying a signal to the CCPLL and monitoring the output of the CCPLL. Use of the CCPLL may be accomplished or modeled via computer instructions stored on machine readable media.

Abstract translation: 一种用于在电网信号中快速跟踪基频信息的装置是交叉耦合锁相环路滤波器（CCPLL），其包括使用具有多个单独滤波器的锁相环（PLL）装置，其中 多个单独滤波器中的第一滤波器的输入包括电网的信号和来自多个单独滤波器中的至少第二滤波器的输出信号。 使用CCPLL的方法包括将信号应用于CCPLL并监视CCPLL的输出。 CCPLL的使用可以通过存储在机器可读介质上的计算机指令来实现或建模。

公开(公告)号：US07573732B2

公开(公告)日：2009-08-11

申请号：US11753794

申请日：2007-05-25

Applicant: Ralph Teichmann ,  Changyong Wang ,  Robert William Delmerico ,  Zhuohui Tan ,  Robert Roesner ,  Renchang Dai

Inventor： Ralph Teichmann ,  Changyong Wang ,  Robert William Delmerico ,  Zhuohui Tan ,  Robert Roesner ,  Renchang Dai

IPC: H02H7/122 ,  H02M5/458

CPC classification number: H02M1/32 ,  F03D9/255 ,  F03D15/00 ,  H02H7/12 ,  H02J3/01 ,  H02M5/4585 ,  H02M7/487 ,  H02M2001/0048 ,  Y02B70/1491 ,  Y02E10/725 ,  Y02E10/76 ,  Y02E40/40

Abstract: A protective circuit for a multi-level converter including a DC link capacitor bank includes: an energy absorbing element; switches, wherein at least two of the switches each couple the energy absorbing element to the capacitor bank; and a controller configured to provide control signals to the switches to selectively actuate the switches to enable control of energy dissipation and to enable control of voltage balance on the capacitor bank of the multi-level converter.

Abstract translation: 一种用于包括直流链路电容器组的多电平转换器的保护电路包括：能量吸收元件; 开关，其中所述开关中的至少两个将所述能量吸收元件耦合到所述电容器组; 以及控制器，其被配置为向所述开关提供控制信号以选择性地致动所述开关以实现能量耗散的控制，并且能够控制所述多电平转换器的电容器组上的电压平衡。

公开(公告)号：US20080291708A1

公开(公告)日：2008-11-27

申请号：US11753794

申请日：2007-05-25

Applicant: Ralph Teichmann ,  Changyong Wang ,  Robert William Delmerico ,  Zhuohui Tan ,  Robert Roesner ,  Renchang Dai

Inventor： Ralph Teichmann ,  Changyong Wang ,  Robert William Delmerico ,  Zhuohui Tan ,  Robert Roesner ,  Renchang Dai

IPC: H02H7/10

CPC classification number: H02M1/32 ,  F03D9/255 ,  F03D15/00 ,  H02H7/12 ,  H02J3/01 ,  H02M5/4585 ,  H02M7/487 ,  H02M2001/0048 ,  Y02B70/1491 ,  Y02E10/725 ,  Y02E10/76 ,  Y02E40/40

Abstract: A protective circuit for a multi-level converter including a DC link capacitor bank includes: an energy absorbing element; switches, wherein at least two of the switches each couple the energy absorbing element to the capacitor bank; and a controller configured to provide control signals to the switches to selectively actuate the switches to enable control of energy dissipation and to enable control of voltage balance on the capacitor bank of the multi-level converter.

Abstract translation: 一种用于包括直流链路电容器组的多电平转换器的保护电路包括：能量吸收元件; 开关，其中所述开关中的至少两个将所述能量吸收元件耦合到所述电容器组; 以及控制器，其被配置为向所述开关提供控制信号以选择性地致动所述开关以实现能量耗散的控制，并且能够控制所述多电平转换器的电容器组上的电压平衡。

公开(公告)号：US20190393691A1

公开(公告)日：2019-12-26

申请号：US15986535

申请日：2018-05-22

Applicant: Renchang Dai

Inventor： Renchang Dai

IPC: H02G7/16 ,  H02M5/10 ,  H02J3/20

Abstract: An apparatus for deicing and compensating reactive power is a mobile apparatus eWatch that includes a primary coil generating electromagnetic force, wherein a circuit comprises a voltage source and a switcher, and reactive power compensator that comprises an AC/AC converter and a reactive power compensating coil. The apparatus comprises blades to remove snow and ice.

公开(公告)号：US07456695B2

公开(公告)日：2008-11-25

申请号：US11329248

申请日：2006-01-10

Applicant: Haiqing Weng ,  John D. D'Atre ,  Robert A. Seymour ,  Allen M. Ritter ,  Xiaoming Yuan ,  Renchang Dai ,  Robert W. Delmerico

Inventor： Haiqing Weng ,  John D. D'Atre ,  Robert A. Seymour ,  Allen M. Ritter ,  Xiaoming Yuan ,  Renchang Dai ,  Robert W. Delmerico

IPC: H02H7/09 ,  H02P9/10

CPC classification number: G01R19/2513 ,  H04B2203/5466

Abstract: An apparatus for rapidly tracking fundamental frequency information in the signal of an electric grid is a cross-coupled phase-lock loop filter (CCPLL) that includes the use of a phase-lock-loop (PLL) apparatus having a plurality individual filters, wherein an input for a first filter in the plurality of individual filters comprises the signal of the electric grid and an output signal from at least a second filter in the plurality of individual filters. A method for using the CCPLL includes applying a signal to the CCPLL and monitoring the output of the CCPLL. Use of the CCPLL may be accomplished or modeled via computer instructions stored on machine readable media.

Abstract translation: 一种用于在电网信号中快速跟踪基频信息的装置是交叉耦合的锁相环路滤波器（CCPLL），其包括使用具有多个单独滤波器的锁相环（PLL）装置，其中 多个单独滤波器中的第一滤波器的输入包括电网的信号和来自多个单独滤波器中的至少第二滤波器的输出信号。 使用CCPLL的方法包括将信号应用于CCPLL并监视CCPLL的输出。 CCPLL的使用可以通过存储在机器可读介质上的计算机指令来实现或建模。

公开(公告)号：US20070177314A1

公开(公告)日：2007-08-02

申请号：US11344730

申请日：2006-01-31

Applicant: Haiqing Weng ,  Robert Seymour ,  John D'Atre ,  Allen Ritter ,  Xiaoming Yuan ,  Renchang Dai ,  Robert Delmerico

Inventor： Haiqing Weng ,  Robert Seymour ,  John D'Atre ,  Allen Ritter ,  Xiaoming Yuan ,  Renchang Dai ,  Robert Delmerico

IPC: H02H7/06 ,  G05D11/00

CPC classification number: H02J3/386 ,  F03D9/255 ,  H02P9/007 ,  H02P29/025 ,  H02P2101/15 ,  H02P2207/073 ,  Y02E10/72 ,  Y02E10/763

Abstract: Method and apparatus that provide a response to the negative sequence current demands during a disturbance of the grid system connected to power-generating equipment, such as a wind turbine system, provide for tracking components in the grid signal, orienting at least a portion of the signal, and injecting the oriented portion. Controlled injection of negative sequence current provides for extending small-signal control response, and also provides for modifications of the apparent impedance to the grid interconnect of the power conversion equipment.

Abstract translation: 在与发电设备（例如风力涡轮机系统）连接的电网系统的干扰期间提供对负序电流需求的响应的方法和装置提供在电网信号中跟踪组件，定向至少部分 信号，并注入定向部分。 控制的负序电流注入提供了扩展的小信号控制响应，并且还提供对电力转换设备的电网互连的视在阻抗的修改。

公开(公告)号：US11119462B2

公开(公告)日：2021-09-14

申请号：US16596093

申请日：2019-10-08

Applicant: Renchang Dai ,  Guangyi Liu ,  Chen Yuan ,  Peng Wei ,  Yongli Zhu ,  Yi Lu ,  Zhijun Liao ,  Zhiwei Wang

Inventor： Renchang Dai ,  Guangyi Liu ,  Chen Yuan ,  Peng Wei ,  Yongli Zhu ,  Yi Lu ,  Zhijun Liao ,  Zhiwei Wang

IPC: G05B99/00 ,  G05B19/042

Abstract: A power system energy management system with dynamic state estimation (DSE) is disclosed wherein system dynamic states are estimated using SCADA measurements, PMU measurements, signals of controllers, digital recorders, protection devices, and smart electronic devices. The DSE is solved first by Unscented Kalman Filter, and if the Unscented Kalman Filter is failed, weighted lease square is used to solve the DSE. If weighted lease square is failed, integration method is used to calculate the dynamic states. In another aspect, Unscented Kalman Filter, weighted lease square, and integration calculation are applied to solve the DSE by nodal parallel computing for each generation system.

公开(公告)号：US20210103263A1

公开(公告)日：2021-04-08

申请号：US16596093

申请日：2019-10-08

Applicant: Renchang Dai ,  Guangyi Liu ,  Chen Yuan ,  Peng Wei ,  Yongli Zhu ,  Yi Lu ,  Zhijun Liao ,  Zhiwei Wang

Inventor： Renchang Dai ,  Guangyi Liu ,  Chen Yuan ,  Peng Wei ,  Yongli Zhu ,  Yi Lu ,  Zhijun Liao ,  Zhiwei Wang

IPC: G05B19/042

Abstract: A power system energy management system with dynamic state estimation (DSE) is disclosed wherein system dynamic states are estimated using SCADA measurements, PMU measurements, signals of controllers, digital recorders, protection devices, and smart electronic devices. The DSE is solved first by Unscented Kalman Filter, and if the Unscented Kalman Filter is failed, weighted lease square is used to solve the DSE. If weighted lease square is failed, integration method is used to calculate the dynamic states. In another aspect, Unscented Kalman Filter, weighted lease square, and integration calculation are applied to solve the DSE by nodal parallel computing for each generation system.

公开(公告)号：US20070159265A1

公开(公告)日：2007-07-12

申请号：US11329248

申请日：2006-01-10

Applicant: Haiqing Weng ,  John D'Atre ,  Robert Seymour ,  Allen Ritter ,  Xiaoming Yuan ,  Renchang Dai ,  Robert Delmerico

Inventor： Haiqing Weng ,  John D'Atre ,  Robert Seymour ,  Allen Ritter ,  Xiaoming Yuan ,  Renchang Dai ,  Robert Delmerico

IPC: H03L7/00

CPC classification number: G01R19/2513 ,  H04B2203/5466

Abstract: An apparatus for rapidly tracking fundamental frequency information in the signal of an electric grid is a cross-coupled phase-lock loop filter (CCPLL) that includes the use of a phase-lock-loop (PLL) apparatus having a plurality individual filters, wherein an input for a first filter in the plurality of individual filters comprises the signal of the electric grid and an output signal from at least a second filter in the plurality of individual filters. A method for using the CCPLL includes applying a signal to the CCPLL and monitoring the output of the CCPLL. Use of the CCPLL may be accomplished or modeled via computer instructions stored on machine readable media.

Abstract translation: 一种用于在电网信号中快速跟踪基频信息的装置是交叉耦合锁相环路滤波器（CCPLL），其包括使用具有多个单独滤波器的锁相环（PLL）装置，其中 多个单独滤波器中的第一滤波器的输入包括电网的信号和来自多个单独滤波器中的至少第二滤波器的输出信号。 使用CCPLL的方法包括将信号应用于CCPLL并监视CCPLL的输出。 CCPLL的使用可以通过存储在机器可读介质上的计算机指令来实现或建模。

公开(公告)号：US20200341437A1

公开(公告)日：2020-10-29

申请号：US16396502

申请日：2019-04-26

Applicant: Renchang Dai ,  Guangyi Liu ,  Jun Tan ,  Chen Yuan ,  Yi Lu ,  Zhenjiang Yu ,  Zhiwei Wang

Inventor： Renchang Dai ,  Guangyi Liu ,  Jun Tan ,  Chen Yuan ,  Yi Lu ,  Zhenjiang Yu ,  Zhiwei Wang

IPC: G05B13/04 ,  G06F16/901 ,  H02J3/06 ,  H04W52/52

Abstract: A power system energy management system with security constrained automatic generation control (SCAGC) is disclosed wherein the power generation output and branch power flow are constrained by security limit. A sub-optimization model is used to calculate SCAGC for each control area in parallel. Graph computing is applied to solve the SCAGC by simplex approach in hierarchical parallel and nodal parallel. The SCAGC is solved heuristically first by combining the equal incremental fuel cost ratio and generation shift factor, and if the heuristics do not converge, a simplex method is used to solve the SCAGC.