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1. 发明授权

US09331487B2 Method and apparatus for islanding detection for grid tie converters 有权
标题翻译：并网转换器孤岛检测方法及装置
公开(公告)号：US09331487B2
公开(公告)日：2016-05-03
申请号：US13827630
申请日：2013-03-14
申请人： Zhenhuan Yuan , Shaofeng Zhang , Haihui Lu , Lixiang Wei , Russel J. Kerkman , Richard Lukaszewski , Ahmed Mohamed Sayed Ahmed , Robert J. Breitzmann
发明人： Zhenhuan Yuan , Shaofeng Zhang , Haihui Lu , Lixiang Wei , Russel J. Kerkman , Richard Lukaszewski , Ahmed Mohamed Sayed Ahmed , Robert J. Breitzmann
IPC分类号： H02J3/38
CPC分类号： H02J3/382 , H02J3/386 , H02J2003/388 , Y02E10/763 , Y10T307/642
摘要： Methods and apparatus are presented for unintentional islanding detection for grid tie converters in which the phase angle disturbance is introduced by modification of grid side converter switching control signals and a mismatch of reactive power between generation and the grid load is formed upon the occurrence of unintentional islanding, where the applied phase disturbance is determined according to two pre-defined curves to form an equivalent positive feedback at different frequencies to prevent the converter from forming an island at a new stable frequency after the grid is disconnected.
摘要翻译：给出了并网转换器的无意孤立检测方法和装置，其中通过修改电网侧转换器开关控制信号引入相位角扰动，并且在无意孤岛发生时形成发电与电网负载之间的无功功率失配其中施加的相位干扰根据两个预定义曲线确定，以在不同频率处形成等效的正反馈，以防止转换器在网格断开之后以新的稳定频率形成岛。

2. 发明申请

US20120262129A1 DOUBLE FED INDUCTION GENERATOR CONVERTER AND METHOD FOR SUPPRESSING TRANSIENT IN DEACTIVATION OF CROWBAR CIRCUIT FOR GRID FAULT RIDETHROUGH 有权
标题翻译：双FED感应发生器转换器和用于抑制用于故障故障的桥梁电路的瞬时停止的方法
公开(公告)号：US20120262129A1
公开(公告)日：2012-10-18
申请号：US13085639
申请日：2011-04-13
申请人： Haihui Lu , Zhenhuan Yuan , Lixiang Wei , Russel Kerkman , Richard Lukaszewski , Ahmed Mohamed Sayed Ahmed
发明人： Haihui Lu , Zhenhuan Yuan , Lixiang Wei , Russel Kerkman , Richard Lukaszewski , Ahmed Mohamed Sayed Ahmed
IPC分类号： H02P9/10
CPC分类号： H02P9/007 , H02P9/10
摘要： A double fed induction generator (DFIG) system and controller are presented in which the rotor side converter is preloaded with one or more initial values for resuming regulated operation to counteract transients upon deactivation of the crowbar protection circuit to provide grid fault ride through.
摘要翻译：提出了一种双馈感应发电机（DFIG）系统和控制器，其中转子侧转换器预载有一个或多个初始值，用于恢复调节操作，以在停用撬棒保护电路时抵消瞬变以提供电网故障穿越。

3. 发明授权

US09041234B2 Double fed induction generator (DFIG) converter and method for improved grid fault ridethrough 有权
标题翻译：双馈感应发电机（DFIG）转换器和改进电网故障穿通的方法
公开(公告)号：US09041234B2
公开(公告)日：2015-05-26
申请号：US13430504
申请日：2012-03-26
申请人： Haihui Lu , Zhenhuan Yuan , Lixiang Wei , Russel Kerkman , Richard Lukaszewski , Ahmed Mohamed Sayed Ahmed
发明人： Haihui Lu , Zhenhuan Yuan , Lixiang Wei , Russel Kerkman , Richard Lukaszewski , Ahmed Mohamed Sayed Ahmed
IPC分类号： F03D9/00 , F03D7/02 , F03D7/04 , H02J3/38 , H02P9/00 , H02P9/10
CPC分类号： H02P9/006 , F03D7/0224 , F03D7/0284 , F03D7/0288 , F03D7/04 , F03D9/255 , H02H7/06 , H02H7/12 , H02H9/002 , H02J3/386 , H02J2003/001 , H02P9/007 , H02P9/102 , H02P9/48 , H02P2101/15 , Y02E10/723 , Y02E10/763
摘要： A double fed induction generator (DFIG) converter method are presented in which rotor side current spikes are attenuated using series-connected damping resistance in response to grid fault occurrences or grid fault clearances.
摘要翻译：提出了一种双馈感应发电机（DFIG）转换器方法，其中转子侧电流尖峰响应于电网故障发生或电网故障间隙使用串联阻尼电阻衰减。

4. 发明授权

US08570003B2 Double fed induction generator converter and method for suppressing transient in deactivation of crowbar circuit for grid fault ridethrough 有权
标题翻译：双馈感应发电机转换器以及用于抑制电网故障消除通路中消弧电路失效瞬变的方法
公开(公告)号：US08570003B2
公开(公告)日：2013-10-29
申请号：US13085639
申请日：2011-04-13
申请人： Haihui Lu , Zhenhuan Yuan , Lixiang Wei , Russel Kerkman , Richard Lukaszewski , Ahmed Mohamed Sayed Ahmed
发明人： Haihui Lu , Zhenhuan Yuan , Lixiang Wei , Russel Kerkman , Richard Lukaszewski , Ahmed Mohamed Sayed Ahmed
IPC分类号： H02P11/00 , H02P9/00 , H02H7/06 , H02P1/00 , H02P1/46 , H02P23/00 , G05B11/28
CPC分类号： H02P9/007 , H02P9/10
摘要： A double fed induction generator (DFIG) system and controller are presented in which the rotor side converter is preloaded with one or more initial values for resuming regulated operation to counteract transients upon deactivation of the crowbar protection circuit to provide grid fault ride through.
摘要翻译：提出了一种双馈感应发电机（DFIG）系统和控制器，其中转子侧转换器预载有一个或多个初始值，用于恢复调节操作，以在停用撬棒保护电路时抵消瞬变以提供电网故障穿越。

5. 发明申请

US20130249501A1 DOUBLE FED INDUCTION GENERATOR (DFIG) CONVERTER AND METHOD FOR IMPROVED GRID FAULT RIDETHROUGH 有权
标题翻译：双电源感应发电机（DFIG）转换器和改进的电网故障的方法RIDETHROUGH
公开(公告)号：US20130249501A1
公开(公告)日：2013-09-26
申请号：US13430504
申请日：2012-03-26
申请人： Haihui Lu , Zhenhuan Yuan , Lixiang Wei , Russel Kerkman , Richard Lukaszewski , Ahmed Mohamed Sayed Ahmed
发明人： Haihui Lu , Zhenhuan Yuan , Lixiang Wei , Russel Kerkman , Richard Lukaszewski , Ahmed Mohamed Sayed Ahmed
IPC分类号： H02P9/10
CPC分类号： H02P9/006 , F03D7/0224 , F03D7/0284 , F03D7/0288 , F03D7/04 , F03D9/255 , H02H7/06 , H02H7/12 , H02H9/002 , H02J3/386 , H02J2003/001 , H02P9/007 , H02P9/102 , H02P9/48 , H02P2101/15 , Y02E10/723 , Y02E10/763
摘要： A double fed induction generator (DFIG) converter method are presented in which rotor side current spikes are attenuated using series-connected damping resistance in response to grid fault occurrences or grid fault clearances.
摘要翻译：提出了一种双馈感应发电机（DFIG）转换器方法，其中转子侧电流尖峰响应于电网故障发生或电网故障间隙使用串联阻尼电阻衰减。

6. 发明授权

US08736091B2 Converter lifetime improvement method for doubly fed induction generator 有权
标题翻译：双馈感应发电机转换器寿命改善方法
公开(公告)号：US08736091B2
公开(公告)日：2014-05-27
申请号：US12818895
申请日：2010-06-18
申请人： Lixiang Wei , Russel J. Kerkman , Richard A. Lukaszewski , Haihui Lu , Zhenhuan Yuan
发明人： Lixiang Wei , Russel J. Kerkman , Richard A. Lukaszewski , Haihui Lu , Zhenhuan Yuan
IPC分类号： H02P9/04 , G01B3/52
CPC分类号： H02M7/537 , G01B3/52 , G05F1/67 , H02M1/32 , H02P9/007
摘要： The present techniques include methods and systems for operating converter to maintain a lifespan of the converter. In some embodiments, the operating frequency of the converter may be increased such that stress may be reduced on the bond wires of the converter. More specifically, embodiments involve calculating the aging parameters for certain operating conditions of the converter operating in a maximum power point tracking (MPPT) mode and determining whether the MPPT operation results in aging the converter to a point which reduces the converter lifespan below a desired lifespan. If the MPPT operation reduces the converter lifespan below the desired lifespan, the frequency of the converter may be increased such that the converter may be controlled to operate at a percentage of MPPT. Thus, in some embodiments, power output may be optimized with respect to maintaining a desired lifespan of the converter.
摘要翻译：本技术包括用于操作转换器以保持转换器寿命的方法和系统。在一些实施例中，可以增加转换器的工作频率，使得可以在转换器的接合线上减小应力。更具体地，实施例涉及为以最大功率点跟踪（MPPT）模式操作的转换器的某些操作条件计算老化参数，并且确定MPPT操作是否导致转换器老化到将转换器寿命降低到期望寿命以下的点。如果MPPT操作将转换器寿命降低到期望的寿命以下，则可以增加转换器的频率，使得可以将转换器控制为以MPPT的百分比进行操作。因此，在一些实施例中，可以相对于维持转换器的期望寿命来优化功率输出。

7. 发明授权

US08432052B2 Wind power converter system with grid side reactive power control 有权
标题翻译：具有电网侧无功功率控制的风力发电系统
公开(公告)号：US08432052B2
公开(公告)日：2013-04-30
申请号：US12789285
申请日：2010-05-27
申请人： Haihui Lu , Lixiang Wei , Richard A. Lukaszewski , Russel J. Kerkman , Zhenhuan Yuan
发明人： Haihui Lu , Lixiang Wei , Richard A. Lukaszewski , Russel J. Kerkman , Zhenhuan Yuan
IPC分类号： H02P9/04 , G05D3/12
CPC分类号： H02P9/105 , H02J3/386 , H02J3/50 , H02M5/4585 , H02P9/007 , H02P2101/15
摘要： The present techniques include methods and systems for operating a wind power system to maintain a lifespan of the rotor side converter. In some embodiments, the current of the rotor side converter may be minimized to reduce the stress and/or junction temperature variation in the switching transistors and bond wires of the converter. More specifically, embodiments involve using a minimal current in the rotor side converter based on the rotor side and grid side reactive powers. If the grid side reactive power is greater than a maximum grid side reactive power, the grid side reactive power may be reduced. Further, if the total reactive power does not meet the grid reactive power requirements, the minimal current in the rotor side converter may be adjusted such that the system may sufficiently power the grid.
摘要翻译：本技术包括用于操作风力发电系统以维持转子侧转换器的寿命的方法和系统。在一些实施例中，转子侧转换器的电流可以最小化，以减小转换器的开关晶体管和接合线中的应力和/或结温变化。更具体地，实施例涉及在转子侧转换器中基于转子侧和电网侧无功功率使用最小电流。如果电网侧无功功率大于最大电网侧的无功功率，则电网侧的无功功率可能会降低。此外，如果总无功功率不满足电网无功功率要求，则可以调节转子侧转换器中的最小电流，使得系统可以对电网充分供电。

8. 发明申请

US20110309875A1 CONVERTER LIFETIME IMPROVEMENT METHOD FOR DOUBLY FED INDUCTION GENERATOR 有权
标题翻译：双极电感诱导发生器的转换器寿命改进方法
公开(公告)号：US20110309875A1
公开(公告)日：2011-12-22
申请号：US12818895
申请日：2010-06-18
申请人： Lixiang Wei , Russel J. Kerkman , Richard A. Lukaszewski , Haihui Lu , Zhenhuan Yuan
发明人： Lixiang Wei , Russel J. Kerkman , Richard A. Lukaszewski , Haihui Lu , Zhenhuan Yuan
IPC分类号： H03K17/60
CPC分类号： H02M7/537 , G01B3/52 , G05F1/67 , H02M1/32 , H02P9/007
摘要： The present techniques include methods and systems for operating converter to maintain a lifespan of the converter. In some embodiments, the operating frequency of the converter may be increased such that stress may be reduced on the bond wires of the converter. More specifically, embodiments involve calculating the aging parameters for certain operating conditions of the converter operating in a maximum power point tracking (MPPT) mode and determining whether the MPPT operation results in aging the converter to a point which reduces the converter lifespan below a desired lifespan. If the MPPT operation reduces the converter lifespan below the desired lifespan, the frequency of the converter may be increased such that the converter may be controlled to operate at a percentage of MPPT. Thus, in some embodiments, power output may be optimized with respect to maintaining a desired lifespan of the converter.
摘要翻译：本技术包括用于操作转换器以保持转换器寿命的方法和系统。在一些实施例中，可以增加转换器的工作频率，使得可以在转换器的接合线上减小应力。更具体地，实施例涉及为以最大功率点跟踪（MPPT）模式操作的转换器的某些操作条件计算老化参数，并且确定MPPT操作是否导致转换器老化到将转换器寿命降低到期望寿命以下的点。如果MPPT操作将转换器寿命降低到期望的寿命以下，则可以增加转换器的频率，使得可以将转换器控制为以MPPT的百分比进行操作。因此，在一些实施例中，可以相对于维持转换器的期望寿命来优化功率输出。

9. 发明申请

US20110295437A1 WIND POWER CONVERTER SYSTEM WITH GRID SIDE REACTIVE POWER CONTROL 有权
标题翻译：风力电力转换器系统，具有三相无功功率控制
公开(公告)号：US20110295437A1
公开(公告)日：2011-12-01
申请号：US12789285
申请日：2010-05-27
申请人： Haihui Lu , Lixiang Wei , Richard A. Lukaszewski , Russel J. Kerkman , Zhenhuan Yuan
发明人： Haihui Lu , Lixiang Wei , Richard A. Lukaszewski , Russel J. Kerkman , Zhenhuan Yuan
IPC分类号： H02P9/04 , G06F1/28
CPC分类号： H02P9/105 , H02J3/386 , H02J3/50 , H02M5/4585 , H02P9/007 , H02P2101/15
摘要： The present techniques include methods and systems for operating a wind power system to maintain a lifespan of the rotor side converter. In some embodiments, the current of the rotor side converter may be minimized to reduce the stress and/or junction temperature variation in the switching transistors and bond wires of the converter. More specifically, embodiments involve using a minimal current in the rotor side converter based on the rotor side and grid side reactive powers. If the grid side reactive power is greater than a maximum grid side reactive power, the grid side reactive power may be reduced. Further, if the total reactive power does not meet the grid reactive power requirements, the minimal current in the rotor side converter may be adjusted such that the system may sufficiently power the grid.
摘要翻译：本技术包括用于操作风力发电系统以维持转子侧转换器的寿命的方法和系统。在一些实施例中，转子侧转换器的电流可以最小化，以减小转换器的开关晶体管和接合线中的应力和/或结温变化。更具体地，实施例涉及在转子侧转换器中基于转子侧和电网侧无功功率使用最小电流。如果电网侧无功功率大于最大电网侧的无功功率，则电网侧的无功功率可能会降低。此外，如果总无功功率不满足电网无功功率要求，则可以调节转子侧转换器中的最小电流，使得系统可以对电网充分供电。

10. 发明授权

US08742767B2 Parameter estimation system and method for an induction motor 有权
标题翻译：感应电动机的参数估计系统和方法
公开(公告)号：US08742767B2
公开(公告)日：2014-06-03
申请号：US12611719
申请日：2009-11-03
申请人： David M. Messersmith , Douglas J. Bader , Haihui Lu , Thomas A. Nondahl , Zhenhuan Yuan
发明人： David M. Messersmith , Douglas J. Bader , Haihui Lu , Thomas A. Nondahl , Zhenhuan Yuan
IPC分类号： G01R31/06
CPC分类号： G01R31/343 , G01R27/08 , G01R27/2611 , H02P23/14
摘要： A method of estimating stator resistance of an induction motor includes applying voltage pulses through two phase paths of the motor for a plurality of electrical cycles to inject current in the motor, wherein the voltage pulses are applied until rotor flux of the motor is substantially stabilized and measuring stator voltage and stator current in response to the applied voltage pulses for each of the plurality of electrical cycles. The method also includes calculating the stator resistance based upon the measured stator voltages and the stator currents.
摘要翻译：一种估计感应电动机的定子电阻的方法包括：通过电动机的两个相位路径将电压脉冲施加多个电循环以在电动机中注入电流，其中施加电压脉冲，直到电机的转子磁通量基本稳定，响应于所述多个电循环中的每一个的所施加的电压脉冲来测量定子电压和定子电流。该方法还包括基于所测量的定子电压和定子电流来计算定子电阻。

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