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1. 发明授权

US07804184B2 System and method for control of a grid connected power generating system 有权
标题翻译：控制并网发电系统的系统和方法
公开(公告)号：US07804184B2
公开(公告)日：2010-09-28
申请号：US12358327
申请日：2009-01-23
申请人： Xiaoming Yuan , Allen Michael Ritter , Haiqing Weng , Robert William Delmerico
发明人： Xiaoming Yuan , Allen Michael Ritter , Haiqing Weng , Robert William Delmerico
IPC分类号： F03D9/00 , H02P9/04 , F03B13/10 , F03B13/12 , F03B13/00 , F01D15/10 , F02C6/00 , H02K7/18
CPC分类号： H02J3/386 , Y02E10/725 , Y02E10/763
摘要： A system for controlling a grid connected power generating system is provided. The system includes a wind turbine, a converter, a first controller and a second controller. The wind turbine supplies electrical power to a power grid and the converter couples the wind turbine to the power grid. The first controller calculates voltage commands to emulate a phasor back electromotive force behind an inductance. The controller further generates converter switching commands from the voltage commands. The voltage commands include a voltage magnitude reference and an internal frequency reference calculated from a power imbalance between an active power reference and the electrical power. The second controller is used to limit a converter current.
摘要翻译：提供一种用于控制并网发电系统的系统。该系统包括风力涡轮机，转换器，第一控制器和第二控制器。风力涡轮机向电网提供电力，并且转换器将风力涡轮机耦合到电网。第一控制器计算电压指令以仿真电感后面的相量反电动势。控制器还从电压指令产生转换器切换命令。电压指令包括从有功功率基准和电功率之间的功率不平衡计算出的电压幅度参考和内部频率参考。第二个控制器用于限制转换器电流。

2. 发明申请

US20100142237A1 SYSTEM AND METHOD FOR CONTROL OF A GRID CONNECTED POWER GENERATING SYSTEM 有权
标题翻译：用于控制网状连接发电系统的系统和方法
公开(公告)号：US20100142237A1
公开(公告)日：2010-06-10
申请号：US12358327
申请日：2009-01-23
申请人： Xiaoming Yuan , Allen Michael Ritter , Haiqing Weng , Robert William Delmerico
发明人： Xiaoming Yuan , Allen Michael Ritter , Haiqing Weng , Robert William Delmerico
IPC分类号： H02M7/539 , H02P9/02 , H02P9/04
CPC分类号： H02J3/386 , Y02E10/725 , Y02E10/763
摘要： A system for controlling a grid connected power generating system is provided. The system includes a wind turbine, a converter, a first controller and a second controller. The wind turbine supplies electrical power to a power grid and the converter couples the wind turbine to the power grid. The first controller calculates voltage commands to emulate a phasor back electromotive force behind an inductance. The controller further generates converter switching commands from the voltage commands. The voltage commands include a voltage magnitude reference and an internal frequency reference calculated from a power imbalance between an active power reference and the electrical power. The second controller is used to limit a converter current.
摘要翻译：提供一种用于控制并网发电系统的系统。该系统包括风力涡轮机，转换器，第一控制器和第二控制器。风力涡轮机向电网提供电力，并且转换器将风力涡轮机耦合到电网。第一控制器计算电压指令以仿真电感后面的相量反电动势。控制器还从电压指令产生转换器切换命令。电压指令包括从有功功率基准和电功率之间的功率不平衡计算出的电压幅度参考和内部频率参考。第二个控制器用于限制转换器电流。

3. 发明授权

US07928780B1 Phase-locked-loop circuit 有权
标题翻译：锁相环电路
公开(公告)号：US07928780B1
公开(公告)日：2011-04-19
申请号：US12569119
申请日：2009-09-29
申请人： Xiaoming Yuan , Zhuohui Tan , Robert William Delmerico , Haiqing Weng , Robert Allen Seymour
发明人： Xiaoming Yuan , Zhuohui Tan , Robert William Delmerico , Haiqing Weng , Robert Allen Seymour
IPC分类号： H03B21/00 , H03L7/06
CPC分类号： H03L7/085 , H02J3/40
摘要： A phase-locked loop circuit comprises a phase error detector for receiving a multi-phase reference signal and a synchronized phase signal of the phase-locked-loop circuit, and for performing a rotational transformation to convert the multi-phase reference signal into two-phase quantities at a synchronous rotation d-q reference frame. A monotonic transfer module receives the two-phase quantities, and generates a monotonic phase error signal which is monotonic when a phase difference between the multi-phase reference signal and the synchronized phase signal ranges from −180 degrees to 180 degrees. A regulator receives the monotonic phase error signal, and generates a synchronized rotation frequency. An integrator receives the synchronized rotation frequency, and generates the synchronized phase signal.
摘要翻译：锁相环电路包括用于接收锁相环电路的多相参考信号和同步相位信号的相位误差检测器，并且用于执行旋转变换以将多相参考信号转换为二相参考信号，同步旋转dq参考系的相位量。单调传递模块接收两相量，并且当多相参考信号和同步相位信号之间的相位差范围从-180度到180度时，产生单调的单调相位误差信号。调节器接收单调相位误差信号，并产生同步旋转频率。积分器接收同步旋转频率，并产生同步相位信号。

4. 发明申请

US20110075456A1 POWER CONVERSION CONTROL SYSTEM 有权
标题翻译：功率转换控制系统
公开(公告)号：US20110075456A1
公开(公告)日：2011-03-31
申请号：US12569160
申请日：2009-09-29
申请人： Zhuohui Tan , Robert William Delmerico , Xiaoming Yuan , Haiqing Weng
发明人： Zhuohui Tan , Robert William Delmerico , Xiaoming Yuan , Haiqing Weng
IPC分类号： H02M7/44 , H03L7/00
CPC分类号： H02M7/48 , H02J3/40 , H02M2007/53876
摘要： A power distribution system comprises a power conversion module for performing power conversion between a DC voltage at a DC side and an AC power at an AC side, and a conversion control system. The AC side of the power conversion module is electrically coupled to a grid. The conversion control system includes a phase-locked-loop circuit for receiving a multi-phase reference signal of a grid voltage and for generating a synchronized signal, a regulator for receiving reference commands, a two-phase grid feedback signal, and the synchronized signal and for generating a control signal for the power conversion module, and a phase compensation circuit for receiving the synchronized signal and the multi-phase reference signal of the grid voltage, for obtaining a phase displacement signal, and for generating a phase compensation signal for compensating the reference commands or for compensating the synchronized signal when the phase displacement signal exceeds a threshold value.
摘要翻译：配电系统包括用于在直流侧的DC电压和AC侧的AC电力之间进行电力转换的电力转换模块和转换控制系统。电力转换模块的AC侧电耦合到电网。转换控制系统包括用于接收电网电压的多相参考信号并用于产生同步信号的锁相环电路，用于接收参考命令的调节器，两相电网反馈信号和同步信号并且用于产生用于电力转换模块的控制信号，以及用于接收电网电压的同步信号和多相参考信号的相位补偿电路，以获得相位位移信号，并产生用于补偿的相位补偿信号参考命令或用于当相位位移信号超过阈值时补偿同步信号。

5. 发明授权

US08014181B2 Power conversion control system 有权
标题翻译：电力转换控制系统
公开(公告)号：US08014181B2
公开(公告)日：2011-09-06
申请号：US12569160
申请日：2009-09-29
申请人： Zhuohui Tan , Robert William Delmerico , Xiaoming Yuan , Haiqing Weng
发明人： Zhuohui Tan , Robert William Delmerico , Xiaoming Yuan , Haiqing Weng
IPC分类号： H02M7/5383 , H03L7/00
CPC分类号： H02M7/48 , H02J3/40 , H02M2007/53876
摘要： A power distribution system comprises a power conversion module for performing power conversion between a DC voltage at a DC side and an AC power at an AC side, and a conversion control system. The AC side of the power conversion module is electrically coupled to a grid. The conversion control system includes a phase-locked-loop circuit for receiving a multi-phase reference signal of a grid voltage and for generating a synchronized signal, a regulator for receiving reference commands, a two-phase grid feedback signal, and the synchronized signal and for generating a control signal for the power conversion module, and a phase compensation circuit for receiving the synchronized signal and the multi-phase reference signal of the grid voltage, for obtaining a phase displacement signal, and for generating a phase compensation signal for compensating the reference commands or for compensating the synchronized signal when the phase displacement signal exceeds a threshold value.
摘要翻译：配电系统包括用于在直流侧的DC电压和AC侧的AC电力之间进行电力转换的电力转换模块和转换控制系统。电力转换模块的AC侧电耦合到电网。转换控制系统包括用于接收电网电压的多相参考信号并用于产生同步信号的锁相环电路，用于接收参考命令的调节器，两相电网反馈信号和同步信号并且用于产生用于电力转换模块的控制信号，以及用于接收电网电压的同步信号和多相参考信号的相位补偿电路，以获得相位位移信号，并产生用于补偿的相位补偿信号参考命令或用于当相位位移信号超过阈值时补偿同步信号。

6. 发明授权

US07253537B2 System and method of operating double fed induction generators 有权
标题翻译：运行双馈感应发电机的系统和方法
公开(公告)号：US07253537B2
公开(公告)日：2007-08-07
申请号：US11297775
申请日：2005-12-08
申请人： Haiqing Weng , Robert William Delmerico , Xiaoming Yuan , Changyong Wang
发明人： Haiqing Weng , Robert William Delmerico , Xiaoming Yuan , Changyong Wang
IPC分类号： H02P9/48
CPC分类号： H02P9/007 , H02P9/006 , H02P9/10 , H02P2101/15
摘要： A protection system and a protection method are provided for protecting a double fed induction generator and a gearbox during a grid fault. The protection system includes a plurality of controlled impedance devices. Each of the controlled impedance devices is coupled between a respective phase of a stator winding of the double fed induction generator and a respective phase of a grid side converter. The protection system also includes a controller configured for coupling and decoupling impedance in one or more of the plurality of controlled impedance devices in response to changes in at least one of a utility grid voltage and a utility grid current.
摘要翻译：提供了一种保护系统和保护方法，用于在电网故障期间保护双馈感应发电机和变速箱。保护系统包括多个受控阻抗装置。每个受控阻抗装置耦合在双馈感应发电机的定子绕组的相位和电网侧转换器的相应相位之间。保护系统还包括控制器，其被配置为响应于公用电网电压和公用电网电流中的至少一个的变化而耦合和去耦合多个受控阻抗设备中的一个或多个中的阻抗。

7. 发明申请

US20110074474A1 PHASE-LOCKED-LOOP CIRCUIT 有权
标题翻译：相锁环路
公开(公告)号：US20110074474A1
公开(公告)日：2011-03-31
申请号：US12569119
申请日：2009-09-29
申请人： Xiaoming Yuan , Zhuohui Tan , Robert William Delmerico , Haiqing Weng , Robert Allen Seymour
发明人： Xiaoming Yuan , Zhuohui Tan , Robert William Delmerico , Haiqing Weng , Robert Allen Seymour
IPC分类号： H03L7/06
CPC分类号： H03L7/085 , H02J3/40
摘要： A phase-locked loop circuit comprises a phase error detector for receiving a multi-phase reference signal and a synchronized phase signal of the phase-locked-loop circuit, and for performing a rotational transformation to convert the multi-phase reference signal into two-phase quantities at a synchronous rotation d-q reference frame. A monotonic transfer module receives the two-phase quantities, and generates a monotonic phase error signal which is monotonic when a phase difference between the multi-phase reference signal and the synchronized phase signal ranges from −180 degrees to 180 degrees. A regulator receives the monotonic phase error signal, and generates a synchronized rotation frequency. An integrator receives the synchronized rotation frequency, and generates the synchronized phase signal.
摘要翻译：锁相环电路包括用于接收锁相环电路的多相参考信号和同步相位信号的相位误差检测器，并且用于执行旋转变换以将多相参考信号转换为二相参考信号，同步旋转dq参考系的相量。单调传递模块接收两相量，并且当多相参考信号和同步相位信号之间的相位差范围从-180度到180度时，产生单调的单调相位误差信号。调节器接收单调相位误差信号，并产生同步旋转频率。积分器接收同步旋转频率，并产生同步相位信号。

8. 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。

9. 发明申请

US20090045782A1 POWER CONVERSION SYSTEM 审中-公开
标题翻译：电力转换系统
公开(公告)号：US20090045782A1
公开(公告)日：2009-02-19
申请号：US11839929
申请日：2007-08-16
申请人： Rajib Datta , Allen Michael Ritter , Haiqing Weng , Luis Jose Garces , Kunlun Chen , Haitao Zhang
发明人： Rajib Datta , Allen Michael Ritter , Haiqing Weng , Luis Jose Garces , Kunlun Chen , Haitao Zhang
IPC分类号： H02P9/00 , F04B17/00 , H02M7/00
CPC分类号： H02M7/487 , H02M7/49
摘要： A power conversion system includes two three-level converters, and a phase shifted transformer coupled to the converters.
摘要翻译：电力转换系统包括两个三电平转换器和耦合到转换器的相移变压器。

10. 发明授权

US07327134B1 Method and system for transformer control 有权
标题翻译：变压器控制方法及系统
公开(公告)号：US07327134B1
公开(公告)日：2008-02-05
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。

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