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11. 发明申请

US20090003020A1 Cross current control for power converter system 有权
标题翻译：电源转换器系统的交流电流控制
公开(公告)号：US20090003020A1
公开(公告)日：2009-01-01
申请号：US11823714
申请日：2007-06-27
申请人： Richard S. Zhang , Changyong Wang , Zhuohui Tan , Haiqing Weng
发明人： Richard S. Zhang , Changyong Wang , Zhuohui Tan , Haiqing Weng
IPC分类号： H02J3/00
CPC分类号： H02M5/4585 , H02M1/32 , H02M7/17 , H02M7/493 , H02M2001/123
摘要： A system and method for controlling cross current in an interleaved power converter system having a plurality of converter threads coupled in parallel includes collecting a feedback current from each thread and obtaining a normal current and a differential mode current for each thread, based on its respective feedback current. The normal current of each thread is regulated to a commanded thread normal current value via a respective normal current control loop based on d-q rotating frame parameters. A differential mode cross current of each thread is regulated to zero via a respective differential mode cross current control loop based on d-q rotating frame parameters; while a differential mode cross current DC offset of each thread is regulated to zero via a respective differential mode cross current control loop based on stationary frame parameters.
摘要翻译：一种用于控制具有并联耦合的多个转换器线程的交错电力转换器系统中的交叉电流的系统和方法包括：收集来自每个线程的反馈电流，并且基于其各自的反馈获得每个线程的正常电流和差模电流当前。基于d-q旋转帧参数，通过相应的正常电流控制回路将每个线程的正常电流调节到指令线程的正常电流值。通过基于d-q旋转帧参数的相应的差模交叉电流控制回路将每个线程的差模交叉电流调节为零; 而每个线程的差模交叉电流DC偏移通过基于固定帧参数的相应差模交叉电流控制回路调节为零。

12. 发明授权

US07456695B2 Apparatus, method and computer program product for tracking information in an electric grid 有权
标题翻译：用于跟踪电网信息的装置，方法和计算机程序产品
公开(公告)号：US07456695B2
公开(公告)日：2008-11-25
申请号：US11329248
申请日：2006-01-10
申请人： Haiqing Weng , John D. D'Atre , Robert A. Seymour , Allen M. Ritter , Xiaoming Yuan , Renchang Dai , Robert W. Delmerico
发明人： Haiqing Weng , John D. D'Atre , Robert A. Seymour , Allen M. Ritter , Xiaoming Yuan , Renchang Dai , Robert W. Delmerico
IPC分类号： H02H7/09 , H02P9/10
CPC分类号： G01R19/2513 , H04B2203/5466
摘要： 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.
摘要翻译：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。

13. 发明授权

US07359223B2 Power converter system and method 有权
标题翻译：电源转换器系统及方法
公开(公告)号：US07359223B2
公开(公告)日：2008-04-15
申请号：US11095227
申请日：2005-03-30
申请人： Rajib Datta , Kunlun Chen , Haiqing Weng , Ravisekhar Nadimpalli Raju
发明人： Rajib Datta , Kunlun Chen , Haiqing Weng , Ravisekhar Nadimpalli Raju
IPC分类号： H02M7/00
CPC分类号： H02M7/49
摘要： A power converter system for supplying an output voltage is provided. The power converter system is adapted to operate in a normal mode and a fault mode. The system comprises a plurality of bridges and a plurality of transformers. The system further comprises a plurality of dc link capacitors, each coupled across a corresponding bridge. The system also includes a controller adapted for, during the normal mode, switching each bridge with a respective normal phase shift. During the fault mode, the controller is adapted for switching each of the remaining ones of the bridges with a respective adjusted phase shift to generate the output voltage. During the fault mode, at least one of the plurality of bridges is bypassed.
摘要翻译：提供了用于提供输出电压的功率转换器系统。电源转换器系统适用于正常模式和故障模式。该系统包括多个桥和多个变压器。该系统还包括多个直流链路电容器，每个直流链路电容器跨越相应的桥接器耦合。该系统还包括适于在正常模式期间用相应的正相移切换每个桥的控制器。在故障模式期间，控制器适于用相应调整的相移来切换桥接中的每一个，以产生输出电压。在故障模式期间，绕过多个桥中的至少一个。

14. 发明申请

US20070177314A1 Method, apparatus and computer program product for injection current 有权
标题翻译：注射电流的方法，装置和计算机程序产品
公开(公告)号：US20070177314A1
公开(公告)日：2007-08-02
申请号：US11344730
申请日：2006-01-31
申请人： Haiqing Weng , Robert Seymour , John D'Atre , Allen Ritter , Xiaoming Yuan , Renchang Dai , Robert Delmerico
发明人： Haiqing Weng , Robert Seymour , John D'Atre , Allen Ritter , Xiaoming Yuan , Renchang Dai , Robert Delmerico
IPC分类号： H02H7/06 , G05D11/00
CPC分类号： H02J3/386 , F03D9/255 , H02P9/007 , H02P29/025 , H02P2101/15 , H02P2207/073 , Y02E10/72 , Y02E10/763
摘要： 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.
摘要翻译：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。

15. 发明授权

US09190923B2 System and method for converter switching frequency control 有权
标题翻译：转换器开关频率控制的系统和方法
公开(公告)号：US09190923B2
公开(公告)日：2015-11-17
申请号：US13483776
申请日：2012-05-30
申请人： Xiaoming Yuan , Haiqing Weng , Zhuohui Tan , Yunfeng Liu , Wenqiang Yang , Pengcheng Zhu
发明人： Xiaoming Yuan , Haiqing Weng , Zhuohui Tan , Yunfeng Liu , Wenqiang Yang , Pengcheng Zhu
IPC分类号： F03D7/00 , H02M5/458 , F03D9/00 , H02M1/00 , H02P9/02
CPC分类号： H02M5/458 , F03D9/25 , F03D9/257 , H02J3/383 , H02J3/386 , H02M1/00 , H02M1/12 , H02M7/487 , H02M2001/0048 , H02P9/02 , Y02B70/1491 , Y02E10/563 , Y02E10/763
摘要： A system for power conversion includes a power converter having switching elements, a detector, and a controller is provided. The detector detects a parameter and provides electrical signals indicative of the parameter. The controller receives the electrical signals transmitted from the detector, and sends commands to instruct the power converter to perform power conversion by operating the switching elements in accordance with switching signals at a different frequency in response to a detection of the system condition. A method for operating the system is also provided.
摘要翻译：一种用于电力转换的系统包括具有开关元件的功率转换器，检测器和控制器。检测器检测参数并提供指示参数的电信号。控制器接收从检测器发送的电信号，并且响应于系统状况的检测，发送命令以指示功率转换器根据不同频率的切换信号操作开关元件来执行功率转换。还提供了一种用于操作系统的方法。

16. 发明授权

US07532490B2 Converter topology and methods for interfacing an electrical machine to electrical power grid 失效
标题翻译：用于将电机与电力电网连接的转换器拓扑和方法
公开(公告)号：US07532490B2
公开(公告)日：2009-05-12
申请号：US11464241
申请日：2006-08-14
申请人： Rajib Datta , Haiqing Weng , Richard S. Zhang , Ravisekhar Raju , Allen M. Ritter
发明人： Rajib Datta , Haiqing Weng , Richard S. Zhang , Ravisekhar Raju , Allen M. Ritter
IPC分类号： H02J3/00 , H02M5/40
CPC分类号： H02M5/271 , H02M5/297
摘要： A power converter for coupling an electrical machine to an electrical grid includes a machine side converter and a grid side converter, each, side having a plurality of corresponding stages for converting a three-phase electrical signal of the electrical machine to a three-phase electrical signal of the electrical grid. The machine side converter includes a plurality of single-phase bridges coupled in series. The grid side converter includes a plurality of three-phase bridges. Each three-phase bridge corresponds to one of the single-phase bridges of the machine side converter. Each three-phase bridge is coupled to the primary windings of a corresponding transformer. The secondary windings of each corresponding transformer is phase-shifted from its primary windings and is coupled to secondary windings of another respective transformer, thus providing for coupling of the three-phase bridges in a series.
摘要翻译：用于将电机耦合到电网的功率转换器包括机器侧转换器和电网侧转换器，每个侧面具有多个对应级，用于将电机的三相电信号转换成三相电电网信号。机器侧转换器包括串联耦合的多个单相桥。电网侧转换器包括多个三相桥。每个三相桥对应于机器侧转换器的单相桥之一。每个三相桥耦合到相应变压器的初级绕组。每个相应变压器的次级绕组从其初级绕组相移并耦合到另一个相应变压器的次级绕组，从而提供串联的三相桥的耦合。

17. 发明申请

US20080037190A1 CONVERTER TOPOLOGY AND METHODS FOR INTERFACING AN ELECTRICAL MACHINE TO ELECTRICAL POWER GRID 失效
标题翻译：用于将电机连接到电力网的转换器拓扑学和方法
公开(公告)号：US20080037190A1
公开(公告)日：2008-02-14
申请号：US11464241
申请日：2006-08-14
申请人： Rajib Datta , Haiqing Weng , Richard S. Zhang , Ravisekhar Raju , Allen M. Ritter
发明人： Rajib Datta , Haiqing Weng , Richard S. Zhang , Ravisekhar Raju , Allen M. Ritter
IPC分类号： H01H73/00
CPC分类号： H02M5/271 , H02M5/297
摘要： A power converter for coupling an electrical machine to an electrical grid, the power converter including a machine side converter and a grid side converter, each side having a plurality of corresponding stages for converting a three-phase electrical signal of the electrical machine to a three-phase electrical signal of the electrical grid; wherein the machine side converter includes a plurality of single-phase bridges coupled in a series and has at least one coupling for coupling with the electrical machine; wherein the grid side converter includes a plurality of three-phase bridges, each three-phase bridge corresponding to one of the single-phase bridges of the machine side converter; wherein each three-phase bridge is coupled to the primary windings of a respective transformer while the secondary windings of the respective transformer are phase-shifted from the primary windings thereof and are coupled to secondary windings of another respective transformer, thus providing for coupling of the plurality of three-phase bridges in a series, wherein a transformer at the end of the series provides a coupling to at least the electrical grid; and wherein each single-phase bridge of the machine side converter is coupled to the corresponding three-phase bridge of the grid side converter by a direct current (DC) link. A method for making the power converter and a method for using the power converter are also provided.
摘要翻译：一种用于将电机耦合到电网的功率转换器，所述功率转换器包括机器侧转换器和电网侧转换器，每侧具有多个对应级，用于将所述电机的三相电信号转换为三电网的相电信号; 其中所述机器侧转换器包括串联耦合的多个单相桥并且具有用于与所述电机耦合的至少一个联接器; 其中所述电网侧转换器包括多个三相桥，每个三相桥对应于所述机侧转换器的单相桥之一; 其中每个三相桥耦合到相应变压器的初级绕组，而相应变压器的次级绕组从其初级绕组相移并耦合到另一个相应变压器的次级绕组，从而提供多个串联的三相桥，其中串联端的变压器提供至少电网的耦合; 并且其中机器侧转换器的每个单相桥通过直流（DC）链路耦合到电网侧转换器的对应的三相桥。还提供了一种用于制造功率转换器的方法和使用该功率转换器的方法。

18. 发明申请

US20080024114A1 METHOD AND SYSTEM FOR TRANSFORMER CONTROL 有权
标题翻译：变压器控制方法与系统
公开(公告)号：US20080024114A1
公开(公告)日：2008-01-31
申请号：US11460064
申请日：2006-07-26
申请人： Haiqing Weng , Kunlun Chen , Rajib Datta , Allen Michael Ritter
发明人： Haiqing Weng , Kunlun Chen , Rajib Datta , Allen Michael Ritter
IPC分类号： G01R15/18
CPC分类号： H01F27/42 , H01F27/34 , H01F2038/006 , H02M7/49
摘要： A method to balance transformer flux among a plurality of transformers is disclosed. The plurality of transformers is connected to a plurality of converters, each transformer having an associated converter. The method comprises determining a reference flux value, measuring an actual flux value for each transformer, and developing a plurality of voltage command signals in relation to a plurality of variance values between the reference flux value and each actual flux value. In response to the voltage command signals being received at a modulator in signal communication with the plurality of converters, the method proceeds by generating a plurality of switching signals to reduce each of the variance values by making available the plurality of switching signals to each of the associated plurality of converters.
摘要翻译：公开了一种在多个变压器之间平衡变压器通量的方法。多个变压器连接到多个转换器，每个变压器具有相关联的转换器。该方法包括确定参考通量值，测量每个变压器的实际通量值，以及相对于参考通量值和每个实际通量值之间的多个方差值来开发多个电压指令信号。响应于在与多个转换器进行信号通信的调制器处接收的电压指令信号，该方法通过产生多个切换信号来进行，以通过将多个切换信号提供给每个相关联的多个转换器。

19. 发明申请

US20070159265A1 Apparatus, method and computer program product for tracking information in an electric grid 有权
标题翻译：用于跟踪电网信息的装置，方法和计算机程序产品
公开(公告)号：US20070159265A1
公开(公告)日：2007-07-12
申请号：US11329248
申请日：2006-01-10
申请人： Haiqing Weng , John D'Atre , Robert Seymour , Allen Ritter , Xiaoming Yuan , Renchang Dai , Robert Delmerico
发明人： Haiqing Weng , John D'Atre , Robert Seymour , Allen Ritter , Xiaoming Yuan , Renchang Dai , Robert Delmerico
IPC分类号： H03L7/00
CPC分类号： G01R19/2513 , H04B2203/5466
摘要： 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.
摘要翻译：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。

20. 发明授权

US08547715B2 Apparatus and method for DC/AC systems to ride through grid transients 有权
标题翻译：直流/交流系统穿越电网瞬变的装置和方法
公开(公告)号：US08547715B2
公开(公告)日：2013-10-01
申请号：US12882744
申请日：2010-09-15
申请人： Xiaoming Yuan , Zhuohui Tan , Haiqing Weng
发明人： Xiaoming Yuan , Zhuohui Tan , Haiqing Weng
IPC分类号： H02M7/515 , H02M7/5387
CPC分类号： H02J3/385 , Y02E10/58
摘要： A converter system comprises a DC to AC converter, a maximum power point tracking device, and an array-side control. The DC link converts DC from a photovoltaic array to AC for a grid. The maximum power point tracking device is coupled to the array. The array-side control, which is coupled to the DC to AC converter and the device, prevents overvoltage in the DC bus of the DC to AC converter using array voltage and current data from the device and DC bus voltage data from the DC to AC converter during a grid transient by adjusting a maximum power point of the array to increase array voltage.
摘要翻译： A转换器系统包括DC到AC转换器，最大功率点跟踪装置和阵列侧控制。 DC链路将DC从光伏阵列转换为电网的AC。最大功率点跟踪装置耦合到阵列。耦合到DC到AC转换器和器件的阵列侧控制可以使用来自器件的阵列电压和电流数据以及从DC到AC的DC总线电压数据来防止DC到AC转换器的DC总线中的过电压转换器在电网瞬变期间通过调整阵列的最大功率点来增加阵列电压。

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