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31. 发明申请

US20070030707A1 AUXILIARY CIRCUIT FOR USE WITH THREE-PHASE DRIVE WITH CURRENT SOURCE INVERTER POWERING A SINGLE-PHASE LOAD 有权
标题翻译：用于三相驱动的辅助电路与电流反相器供电单相负载
公开(公告)号：US20070030707A1
公开(公告)日：2007-02-08
申请号：US11461693
申请日：2006-08-01
申请人： Lixiang Wei , Gary Skibinski , Richard Lukaszewski
发明人： Lixiang Wei , Gary Skibinski , Richard Lukaszewski
IPC分类号： H02M1/12
CPC分类号： H02M1/126 , H02M5/4585
摘要： The present invention is directed to an auxiliary circuit for reducing low order current harmonics in a three-phase drive system driving a single-phase load, the three-phase drive system including a three-phase source voltage connected to a rectifier system connected to a DC link choke inductor connected to a three-phase current source inverter system.
摘要翻译：本发明涉及一种用于降低驱动单相负载的三相驱动系统中的低阶电流谐波的辅助电路，所述三相驱动系统包括连接到连接到单相负载的整流器系统的三相源电压直流扼流圈电感连接到三相电流源逆变器系统。

32. 发明申请

US20060227582A1 Rectifier for reducing current harmonics from unbalanced source 失效
公开(公告)号：US20060227582A1
公开(公告)日：2006-10-12
申请号：US11095015
申请日：2005-03-31
申请人： Lixiang Wei , Gary Skibinski , Richard Lukaszewski
发明人： Lixiang Wei , Gary Skibinski , Richard Lukaszewski
IPC分类号： H02M7/06
CPC分类号： H02M1/126 , H02M7/06
摘要： A rectifier includes a transformer, a rectifying bridge, a link capacitor, and at least a first resonance loop. The transformer is operable to receive three phase input signals having a source frequency and generate a plurality of transformer phase signals. The rectifying bridge has a number of stages corresponding to the number of transformer phase signals and is operable to generate a rectified output signal based on the transformer phase signals. The link capacitor is coupled across the rectifying bridge. The first resonance loop is coupled between the rectifying bridge and the link capacitor. The first resonance loop has a first resonance frequency corresponding to a harmonic frequency of the source frequency.

33. 发明授权

US09604543B2 Apparatus and method for automatic ground fault location determination in high resistance grounded motor drive system 有权
公开(公告)号：US09604543B2
公开(公告)日：2017-03-28
申请号：US14296502
申请日：2014-06-05
申请人： Jiangang Hu , Lixiang Wei , Zhijun Liu , Jeffrey D. McGuire
发明人： Jiangang Hu , Lixiang Wei , Zhijun Liu , Jeffrey D. McGuire
IPC分类号： G01R31/02 , G01R31/08 , H02H3/16 , B60L3/00 , H02H1/00 , H02P29/032 , H02P29/024 , H02M1/32 , G01R31/40
CPC分类号： B60L3/0069 , G01R31/025 , G01R31/08 , G01R31/086 , G01R31/40 , H02H1/0092 , H02H3/16 , H02M1/32 , H02P29/0241 , H02P29/032 , Y02T10/642
摘要： Methods an apparatus are presented for identifying ground fault locations in multi-drive systems in which individual drives perform self-diagnosis for detected faults based on an identified fault signal frequency while the system drives continue operation, and a ground fault location system identifies suspected drives and individually confirms or exonerates individual drives by selective command speed adjustment while the drives remain operational within system tolerance ranges.

34. 发明授权

US09091742B2 Fault identification techniques for high resistance grounded systems 有权
标题翻译：高电阻接地系统的故障识别技术
公开(公告)号：US09091742B2
公开(公告)日：2015-07-28
申请号：US13400537
申请日：2012-02-20
申请人： Lixiang Wei , Zhijun Liu
发明人： Lixiang Wei , Zhijun Liu
IPC分类号： G01R31/00 , G01R31/42 , G01R31/02
CPC分类号： G01R31/42 , G01R31/025
摘要： The present techniques include methods and systems for detecting a high resistive ground fault condition in an HRG system. Embodiments include systems and methods of measuring drive voltages and detecting voltage changes in the drive once the drive is in operation, particularly for drives operating at relatively low voltages and frequencies. In some embodiments, an integrator is utilized to detect peaks in the measured voltage changes. Relatively small ground currents are also measured to determine HRG faults. Moreover, in some embodiments, the detection of an HRG fault for one of several motor drives provide indication for the particular motor drive in fault.
摘要翻译：本技术包括用于检测HRG系统中的高电阻接地故障状况的方法和系统。实施例包括测量驱动电压并检测驱动器运行中的电压变化的系统和方法，特别是对于在较低电压和频率下工作的驱动器。在一些实施例中，使用积分器来检测所测量的电压变化中的峰值。还测量相对较小的接地电流以确定HRG故障。此外，在一些实施例中，几个电动机驱动器之一的HRG故障的检测为故障中的特定电机驱动器提供指示。

35. 发明申请

US20150098257A1 MULTIFUNCTION POWER CONVERTER WITH OPTION FOR INTEGRATED MAGNETICS 有权
标题翻译：多功能电力转换器与集成磁选择
公开(公告)号：US20150098257A1
公开(公告)日：2015-04-09
申请号：US14049266
申请日：2013-10-09
申请人： Lixiang Wei , Robert M. Michalski , Yogesh Patel , Bruce W. Weiss , Brian P. Brown
发明人： Lixiang Wei , Robert M. Michalski , Yogesh Patel , Bruce W. Weiss , Brian P. Brown
IPC分类号： H02M5/458
CPC分类号： H02M5/4585 , H05K7/1432
摘要： Power converter modules and parallel conversion systems are presented in which the modules are provided in a rollable enclosure having AC and DC electrical connections, and an interior including a switching circuit with switching devices individually connected between a corresponding AC node and a corresponding DC node for operation as either a rectifier or an inverter and an internal filter circuit with inductors individually connected between a corresponding AC node of the switching circuit and a corresponding AC electrical connection, with a built-in blower or fan to cool the filter circuit during operation.
摘要翻译：提出了电力转换器模块和并行转换系统，其中模块设置在具有AC和DC电连接的可卷绕的外壳中，以及包括开关电路的内部，开关电路分别连接在相应的AC节点和相应的DC节点之间用于操作作为整流器或逆变器以及具有电感器的内部滤波器电路，其单独地连接在开关电路的相应AC节点和相应的AC电连接之间，具有内置鼓风机或风扇以在操作期间冷却滤波器电路。

36. 发明申请

US20140042817A1 METHOD AND APPARATUS FOR BYPASSING CASCADED H-BRIDGE (CHB) POWER CELLS AND POWER SUB CELL FOR MULTILEVEL INVERTER 有权
标题翻译：用于多路逆变器的嵌入式H桥（CHB）电源和电源单元的方法和装置
公开(公告)号：US20140042817A1
公开(公告)日：2014-02-13
申请号：US13572995
申请日：2012-08-13
申请人： Navid Zargari , Yuan Xiao , Lixiang Wei
发明人： Navid Zargari , Yuan Xiao , Lixiang Wei
IPC分类号： H02J3/00
CPC分类号： H02M1/32 , H02M7/49 , H02M2001/325 , Y10T307/658 , Y10T307/685
摘要： Bypassing methods and apparatus are presented along with power cells and sub cells for multilevel inverters in which DC current flow into a DC link capacitance is interrupted and a bypass switch is closed across a power cell or sub cell output to selectively bypass a power stage of a multilevel inverter.
摘要翻译：旁路方法和装置与用于多电平逆变器的功率单元和子单元一起呈现，其中直流电流流入直流链路电容被中断，并且旁路开关在功率单元或子单元输出周围闭合以选择性地旁路功率级多电平逆变器

37. 发明授权

US08643383B2 Drive failure protection 有权
标题翻译：驱动器故障保护
公开(公告)号：US08643383B2
公开(公告)日：2014-02-04
申请号：US13016111
申请日：2011-01-28
申请人： Yuan Xiao , Lixiang Wei , Doyle F. Busse
发明人： Yuan Xiao , Lixiang Wei , Doyle F. Busse
IPC分类号： G01R31/12 , H01G2/12 , G05B5/00
CPC分类号： G01R31/2843 , G01R31/42 , H02H7/0811 , H02H7/1203 , H02H7/16 , H02J3/1821 , H02J3/26 , H02M1/42 , H02M5/458 , H02P29/0241 , Y02E40/30 , Y02E40/50
摘要： The present techniques include methods and systems for detecting a failure in a capacitor bank of an electrical drive system. Embodiments include using discharge resistors to discharge capacitors in the capacitor bank, forming a neutral node of the capacitor bank. In different capacitor configurations, the neutral node is measured, and the voltage is analyzed to determine whether a capacitor bank unbalance has occurred. In some embodiments, the node is a neutral-to-neutral node between the discharged side of the discharge resistors and a neutral side of the capacitor bank, or between the discharged side of the discharge resistors and a discharged side of a second set of discharge resistors. In some embodiments, the node is a neutral-to-ground node between the discharged side of the discharge resistors and a ground potential.
摘要翻译：本技术包括用于检测电驱动系统的电容器组中的故障的方法和系统。实施例包括使用放电电阻器对电容器组中的电容器进行放电，形成电容器组的中性点。在不同的电容器配置中，测量中性点，并分析电压以确定电容器组是否发生不平衡。在一些实施例中，节点是放电电阻器的放电侧和电容器组的中性侧之间或放电电阻器的放电侧和第二组放电的放电侧之间的中性点至中性节点电阻在一些实施例中，节点是放电电阻器的放电侧和接地电位之间的中性点对地节点。

38. 发明申请

US20130289911A1 POWER CONVERTER RESONANCE DETECTION APPARATUS AND METHOD 有权
标题翻译：电力变换器谐振检测装置及方法
公开(公告)号：US20130289911A1
公开(公告)日：2013-10-31
申请号：US13570919
申请日：2012-08-09
申请人： Yogesh Popatlal Patel , Lixiang Wei
发明人： Yogesh Popatlal Patel , Lixiang Wei
IPC分类号： G01R23/08 , G06F19/00
CPC分类号： H02M1/126 , H02M5/4585
摘要： Power conversion systems and methods are presented for detecting filter capacitor resonance conditions in a power conversion system in which filter currents are measured and filtered using a bandpass filter, and one or more computed mean, RMS, and/or Fourier transform values are computed based on the filtered value(s). The computed measurement value or values are compared with a predetermined threshold and a suspected filter capacitor resonance condition is selectively identified based on comparison result.
摘要翻译：提出了功率转换系统和方法，用于检测功率转换系统中的滤波电容谐振条件，其中使用带通滤波器测量和滤波滤波器电流，并且基于以下方式计算一个或多个计算的平均值，RMS和/或傅里叶变换值：过滤的值（s）。将计算的测量值或值与预定阈值进行比较，并且基于比较结果选择性地识别怀疑的滤波电容器谐振条件。

39. 发明申请

US20130286692A1 FILTER CAPACITOR DEGRADATION DETECTION APPARATUS AND METHOD 有权
标题翻译：滤波电容器降解检测装置及方法
公开(公告)号：US20130286692A1
公开(公告)日：2013-10-31
申请号：US13570781
申请日：2012-08-09
申请人： Yogesh Popatlal Patel , Lixiang Wei , Russel J. Kerkman
发明人： Yogesh Popatlal Patel , Lixiang Wei , Russel J. Kerkman
IPC分类号： H02M5/45 , G01R31/02
CPC分类号： H02M1/32 , G01R31/028 , G01R31/42 , H01G4/40 , H02M1/126 , H02M5/4585
摘要： Power conversion systems and methods are presented for detecting input filter capacitor degradation or approach of end of operational life based on filter capacitor current measurements using single and/or dual threshold comparisons for computed instantaneous sum of squares of filter currents or power values.
摘要翻译：提出了功率转换系统和方法，用于基于滤波电容电流测量来检测输入滤波电容器劣化或使用寿命终止的方法，使用单个和/或双阈值比较来计算滤波器电流或功率值的计算瞬时平方和。

40. 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。

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