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1. 发明申请

US20070268051A1 Modulation methods and apparatus for reducing common mode noise 有权
标题翻译：用于降低共模噪声的调制方法和装置
公开(公告)号：US20070268051A1
公开(公告)日：2007-11-22
申请号：US11435651
申请日：2006-05-17
申请人： Russel J. Kerkman , Qiang Yin , Haihui Lu
发明人： Russel J. Kerkman , Qiang Yin , Haihui Lu
IPC分类号： H03K3/017
CPC分类号： H02M7/5387 , H02M1/44 , H02M5/458 , H02M2001/123
摘要： A method and apparatus for reducing common mode noise in a three phase pulse width modulated (PWM) system, the method comprising the steps of receiving the first, second and third modulating waveforms, identifying one of the modulating waveforms that is at least one of instantaneously the maximum and instantaneously the minimum of the modulating waveforms as a first identified waveform, wherein comparison of the first identified waveform to the carrier signal would generate a first on-off pulse sequence associated with a phase corresponding to the first identified waveform, generating switch control signals associated with the phase corresponding to the first identified waveform that cause a modified on-off pulse sequence that is phase shifted from the first pulse sequence, using the second and third modulating waveforms to generate second and third on-off pulse sequences corresponding to the second and third phases and providing the modified pulse sequence and the second and third pulse sequences to the one of the inverter and the converter.
摘要翻译：一种用于降低三相脉宽调制（PWM）系统中的共模噪声的方法和装置，该方法包括以下步骤：接收第一，第二和第三调制波形，识别至少一个瞬时调制波形之一最大和瞬时调制波形的最小值作为第一识别波形，其中第一识别波形与载波信号的比较将产生与对应于第一识别波形的相位相关联的第一开 - 关脉冲序列，产生切换控制使用第二和第三调制波形产生与对应于第一识别波形的相位相关的信号，该第二和第三调制波形产生与第一脉冲序列对应的第二和第三开关脉冲序列，第二和第三相，并提供修改的脉冲序列和第二和第三脉冲序列到逆变器和转换器之一。

2. 发明授权

US07649756B2 Common mode noise reduction in converter systems through modification of single phase switching signal 有权
标题翻译：通过修改单相切换信号，转换器系统中的共模噪声降低
公开(公告)号：US07649756B2
公开(公告)日：2010-01-19
申请号：US11435651
申请日：2006-05-17
申请人： Russel J. Kerkman , Qiang Yin , Haihui Lu
发明人： Russel J. Kerkman , Qiang Yin , Haihui Lu
IPC分类号： H02M1/14
CPC分类号： H02M7/5387 , H02M1/44 , H02M5/458 , H02M2001/123
摘要： A method and apparatus for reducing common mode noise in a three phase pulse width modulated (PWM) system, the method comprising the steps of receiving the first, second and third modulating waveforms, identifying one of the modulating waveforms that is at least one of instantaneously the maximum and instantaneously the minimum of the modulating waveforms as a first identified waveform, wherein comparison of the first identified waveform to the carrier signal would generate a first on-off pulse sequence associated with a phase corresponding to the first identified waveform, generating switch control signals associated with the phase corresponding to the first identified waveform that cause a modified on-off pulse sequence that is phase shifted from the first pulse sequence, using the second and third modulating waveforms to generate second and third on-off pulse sequences corresponding to the second and third phases and providing the modified pulse sequence and the second and third pulse sequences to the one of the inverter and the converter.
摘要翻译：一种用于降低三相脉宽调制（PWM）系统中的共模噪声的方法和装置，该方法包括以下步骤：接收第一，第二和第三调制波形，识别至少一个瞬时调制波形之一最大和瞬时调制波形的最小值作为第一识别波形，其中第一识别波形与载波信号的比较将产生与对应于第一识别波形的相位相关联的第一开 - 关脉冲序列，产生切换控制使用第二和第三调制波形产生与对应于第一识别波形的相位相关的信号，该第二和第三调制波形产生与第一脉冲序列对应的第二和第三开关脉冲序列，第二和第三相，并提供修改的脉冲序列和第二和第三脉冲序列到逆变器和转换器之一。

3. 发明授权

US07164254B2 Modulation methods and apparatus for reducing common mode voltages 有权
标题翻译：用于降低共模电压的调制方法和装置
公开(公告)号：US07164254B2
公开(公告)日：2007-01-16
申请号：US11068323
申请日：2005-02-28
申请人： Russel J. Kerkman , Qiang Yin , Haihui Lu
发明人： Russel J. Kerkman , Qiang Yin , Haihui Lu
IPC分类号： H02P3/18
CPC分类号： H02M7/48 , H02M1/44 , H02M2001/123
摘要： Methods and apparatus for reducing the common mode voltage generated by eliminating zero-voltage vectors in a rectifier/inverter variable frequency drive (VFD) system includes comparing three phase voltages to each other to determine a maximum voltage in one phase, a minimum voltage in another phase and a middle voltage in still another phase, inverting phase voltages for one phase having the maximum voltage and another phase having the minimum voltage, comparing the phase voltages to a carrier wave to determine gating signals for three respective phases of the inverter, and inverting gating signals for the one phase having the maximum voltage and for another phase having the minimum voltage to reduce the common mode voltage in the motor. In one embodiment, the zero-voltage vectors are removed by relating a first plurality of gating signals and a plurality of sector logic signals in a logic table to a second plurality of gating signals that are applied to phases of the inverter
摘要翻译：整流/变频变频驱动（VFD）系统中消除零电压矢量产生的共模电压的方法和装置包括将三相电压相互比较，以确定一相中的最大电压，另一相中的最小电压相位和另一相的中间电压，将具有最大电压的一相的相位相电压和具有最小电压的另一相相比较，将相电压与载波进行比较，以确定逆变器的三个相位的门控信号，以及反相具有最大电压的一相的门控信号以及具有最小电压的另一相位以降低电动机中的共模电压。在一个实施例中，通过将逻辑表中的第一多个选通信号和多个扇区逻辑信号与施加到反相器的相位的第二多个选通信号相关联来消除零电压矢量

4. 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。

5. 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。

6. 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。

7. 发明申请

US20140265596A1 METHOD AND APPARATUS FOR ISLANDING DETECTION FOR GRID TIE CONVERTERS 有权
标题翻译：用于网格转换器的岛屿检测的方法和装置
公开(公告)号：US20140265596A1
公开(公告)日：2014-09-18
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。

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. 发明申请

US20070268052A1 Modulation methods and apparatus for reducing common mode noise 有权
标题翻译：用于降低共模噪声的调制方法和装置
公开(公告)号：US20070268052A1
公开(公告)日：2007-11-22
申请号：US11438569
申请日：2006-05-22
申请人： Qiang Yin , Russel J. Kerkman
发明人： Qiang Yin , Russel J. Kerkman
IPC分类号： H03K3/017
CPC分类号： H02M7/5395 , H02M1/12 , H02M2001/123 , H02P27/08
摘要： A method and apparatus for reducing common mode noise in a three phase pulse width modulated (PWM) system the method comprising the steps of receiving modulating waveforms, identifying a first of the modulating waveforms that is instantaneously the maximum of the modulating waveforms, identifying a second of the modulating waveforms that is instantaneously the minimum of the modulating waveforms, for a first phase associated with at least one of the first and second identified waveforms, substituting a first substitute waveform for the one of the first and second waveforms, for the first phase, modifying at least one of the first substituted waveform and duty cycle signals generated by comparing the first substituted waveform with the carrier signal as a function of a first rule set to substantially minimize the effects of turn on delays and for at least one of the second and third phases, modifying at least one of the associated modulating waveform and duty cycle signals generated by comparing the modulating waveform with the carrier signal as a function of a second rule set to substantially eliminate the effects of turn on delays where the second rule set is different than the first rule set.
摘要翻译：一种用于降低三相脉宽调制（PWM）系统中的共模噪声的方法和装置，该方法包括以下步骤：接收调制波形，识别瞬时调制波形的最大值的第一调制波形，识别第二对于与第一和第二识别波形中的至少一个相关联的第一阶段，立即将最小调制波形的调制波形替换为第一和第二波形中的第一波形的第一替代波形，通过将所述第一替代波形与所述载波信号进行比较来生成的所述第一替代波形和占空比信号中的至少一个作为第一规则集的函数，以将接通延迟的影响基本上最小化，并且对于所述第二替代波形中的至少一个和第三阶段，修改由所生成的相关联的调制波形和占空比信号中的至少一个将所述调制波形与所述载波信号作为第二规则集的函数进行比较，以基本上消除所述第二规则集不同于所述第一规则集的导通延迟的影响。

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