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1. 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。

2. 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。

3. 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。

4. 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。

5. 发明申请

US20130134710A1 SYSTEM AND METHOD FOR CONVERTER SWITCHING FREQUENCY CONTROL 有权
标题翻译：用于转换器切换频率控制的系统和方法
公开(公告)号：US20130134710A1
公开(公告)日：2013-05-30
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： H02M5/458 , 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。

6. 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。

7. 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。

8. 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。

9. 发明授权

US07852643B2 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：US07852643B2
公开(公告)日：2010-12-14
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： H02J1/10
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。

10. 发明申请

US20120063179A1 SYSTEM AND METHOD FOR DAMPING LC CIRCUITS IN POWER CONVERSION SYSTEMS 有权
标题翻译：电力转换系统中LC电路的阻尼系统及方法
公开(公告)号：US20120063179A1
公开(公告)日：2012-03-15
申请号：US13080321
申请日：2011-04-05
申请人： Maozhong Gong , Zhuohui Tan , Xiaoming Yuan , Xueqin Wu
发明人： Maozhong Gong , Zhuohui Tan , Xiaoming Yuan , Xueqin Wu
IPC分类号： H02M1/12
CPC分类号： H02M7/48 , H02J3/383 , H02J3/386 , H02M1/12 , Y02E10/563 , Y02E10/763
摘要： A power conversion system comprises a power converter comprising a plurality of semiconductor power switches, an LC filter coupled between an output of the power converter and an electric grid, and a power conversion control system. The LC filter comprises an inductor coupled in series to the electric grid, and a capacitor. The LC filter and the grid result in an equivalent LC circuit comprising an impedance of the LC filter and an impedance of the electric grid. The power conversion control system comprises a damper and a converter controller. The damper receives an LC filter signal and an equivalent LC circuit impedance signal and generates a damping signal. The converter controller receives a current or voltage reference signal, a current or voltage command signal, and the damping signal to generate control signals for driving switching operations of the semiconductor power switches.
摘要翻译：电力转换系统包括功率转换器，其包括多个半导体功率开关，耦合在功率转换器的输出和电网之间的LC滤波器和电力转换控制系统。 LC滤波器包括与电网串联耦合的电感器和电容器。 LC滤波器和电网产生包括LC滤波器的阻抗和电网的阻抗的等效LC电路。电力转换控制系统包括阻尼器和转换器控制器。阻尼器接收LC滤波器信号和等效LC电路阻抗信号并产生阻尼信号。转换器控制器接收电流或电压参考信号，电流或电压指令信号和阻尼信号，以产生用于驱动半导体功率开关的开关操作的控制信号。

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