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41. 发明授权

US08086420B2 Junction temperature prediction method and apparatus for use in a power conversion module 有权
标题翻译：用于功率转换模块的结温预测方法和装置
公开(公告)号：US08086420B2
公开(公告)日：2011-12-27
申请号：US12033940
申请日：2008-02-20
申请人： Russel J. Kerkman , Lixiang Wei , Richard A. Lukaszewski , Brian P. Brown , Neil Gollhardt , Bruce W. Weiss
发明人： Russel J. Kerkman , Lixiang Wei , Richard A. Lukaszewski , Brian P. Brown , Neil Gollhardt , Bruce W. Weiss
IPC分类号： G06F11/30
CPC分类号： H02M7/00 , G01K7/425 , H02M1/32
摘要： A method and apparatus for predicting junction device temperature of at least a first switching device in a power conversion module that includes a plurality of switching devices, the method comprising the steps of, during switching activity, identifying at least one operating characteristic of the first switching device and solving an equation that uses the identified operating characteristic to predict the temperature of the first switching device where the equation solved is a function of the location of the first switching device with respect to the other switching devices in the plurality.
摘要翻译：一种用于预测包括多个开关装置的功率转换模块中的至少第一开关装置的结器件温度的方法和装置，所述方法包括以下步骤：在开关活动期间，识别第一开关的至少一个工作特性并且解决使用所识别的工作特性来预测第一开关装置的温度的方程式，其中求解的方程是第一开关装置相对于多个开关装置中的其它开关装置的位置的函数。

42. 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。

43. 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。

44. 发明申请

US20110101897A1 DC BUS BOOST METHOD AND SYSTEM FOR REGENERATIVE BRAKE 有权
标题翻译：直流母线增压方法及再生制动系统
公开(公告)号：US20110101897A1
公开(公告)日：2011-05-05
申请号：US12612336
申请日：2009-11-04
申请人： Lixiang Wei , Richard A. Lukaszewski , Russel Kerkman , Brian J. Seibel
发明人： Lixiang Wei , Richard A. Lukaszewski , Russel Kerkman , Brian J. Seibel
IPC分类号： H02P27/00 , H02P3/14
CPC分类号： H02M1/083 , B60L2210/20 , H02M5/4585 , H02M2007/2195 , H02P23/06 , H02P25/105 , H02P27/08 , Y02T10/642 , Y02T10/725
摘要： Embodiments of the present invention provide novel techniques for using a switched converter to provide for three-phase alternating current (AC) rectification, regenerative braking, and direct current (DC) voltage boosting. In particular, one of the three legs of the switched converter is controlled with a set of pulse width modulation (PWM) control signals so that the input AC phase having the highest voltage is rectified and one of the switches in the two other legs is turned on to allow for added voltage. This switching activity allows for voltage from multiple AC line mains to be combined, resulting in an overall boost of the DC voltage of the rectifier. The DC voltage boost can then be applied to the common DC bus in order to ameliorate voltage sags, help with motor starts, and increase the ride-through capability of the motor.
摘要翻译：本发明的实施例提供了使用开关转换器来提供三相交流（AC）整流，再生制动和直流（DC）升压）的新技术。特别地，开关转换器的三条腿之一由一组脉冲宽度调制（PWM）控制信号控制，使得具有最高电压的输入AC相被整流，而另外两条腿中的一个开关被转动允许增加电压。该开关活动允许来自多个AC线路电源的电压被组合，导致整流器的直流电压的总体升高。直流电压升压可以应用于公共直流总线，以改善电压下降，有助于电机启动，并增加电机的穿越能力。

45. 发明授权

US07906922B2 Electric motor drive employing hybrid, hysteretic/pulse-width-modulated dynamic braking 有权
标题翻译：采用混合，迟滞/脉冲宽度调制动态制动的电动机驱动
公开(公告)号：US07906922B2
公开(公告)日：2011-03-15
申请号：US12061454
申请日：2008-04-02
申请人： Jerry Dee Thunes , Lixiang Wei
发明人： Jerry Dee Thunes , Lixiang Wei
IPC分类号： H02P3/06
CPC分类号： H02P3/12
摘要： A dynamic braking circuit for an electronic motor drive shunts the DC link of the drive with a resistor using two control strategies. The first control strategy used for lower levels of braking employs a pulse width modulated signal and the second control strategy used for higher levels of braking uses a hysteretic signal significantly reducing switching losses in the semiconductor devices controlling the dynamic braking resistor allowing higher braking capacity.
摘要翻译：用于电动马达驱动的动态制动电路使用两个控制策略使用电阻器来分流驱动器的DC链路。用于较低制动水平的第一种控制策略采用脉宽调制信号，而用于更高制动水平的第二种控制策略使用滞后信号，显着降低控制动态制动电阻器的半导体器件中的开关损耗，从而允许更高的制动能力。

46. 发明申请

US20100078998A1 POWER ELECTRONIC MODULE PRE-CHARGE SYSTEM AND METHOD 有权
标题翻译：电力电子模块预充电系统及方法
公开(公告)号：US20100078998A1
公开(公告)日：2010-04-01
申请号：US12241617
申请日：2008-09-30
申请人： Lixiang Wei , Richard A. Lukaszewski , Ajith H. Wijenayake , Paul Krause , Michael Loth
发明人： Lixiang Wei , Richard A. Lukaszewski , Ajith H. Wijenayake , Paul Krause , Michael Loth
IPC分类号： H02M5/45
CPC分类号： H02M5/458 , H02M5/4585 , Y10T307/406
摘要： A power electronics device with an improved pre-charge circuit configuration is provided. More specifically, the input of the motor drive module may accept an AC or DC source voltage. In this way, the pre-charge circuit of the motor drive module may be utilized whether the motor drive is coupled to an AC or DC source.
摘要翻译：提供了具有改进的预充电电路配置的电力电子设备。更具体地，马达驱动模块的输入可以接受AC或DC源电压。以这种方式，马达驱动模块的预充电电路可以用于电动机驱动器是否耦合到AC或DC源。

47. 发明申请

US20060267542A1 Pulse width modulation (PWM) rectifier with variable switching frequency 有权
标题翻译：具有可变开关频率的脉宽调制（PWM）整流器
公开(公告)号：US20060267542A1
公开(公告)日：2006-11-30
申请号：US11139216
申请日：2005-05-27
申请人： Lixiang Wei , Richard Lukaszewski
发明人： Lixiang Wei , Richard Lukaszewski
IPC分类号： H02P7/36
CPC分类号： H02M7/219
摘要： A method for controlling a device including a plurality of switching devices operated in accordance with a pulse width modulation technique includes receiving a reference voltage signal associated with a first pair of the switching devices. A switching signal is generated. The first pair of switching devices are controlled based on the reference voltage signal and the switching signal in accordance with the pulse width modulation technique. A frequency of the switching signal is varied based on the value of the reference voltage signal.
摘要翻译：一种用于控制包括根据脉宽调制技术操作的多个开关装置的装置的方法，包括接收与第一对开关装置相关联的参考电压信号。产生切换信号。基于参考电压信号和根据脉宽调制技术的开关信号来控制第一对开关器件。开关信号的频率根据参考电压信号的值而变化。

48. 发明授权

US06995992B2 Dual bridge matrix converter 有权
标题翻译：双桥矩阵转换器
公开(公告)号：US06995992B2
公开(公告)日：2006-02-07
申请号：US10601061
申请日：2003-06-20
申请人： Lixiang Wei , Thomas A. Lipo
发明人： Lixiang Wei , Thomas A. Lipo
IPC分类号： H02M5/40 , H02M1/14
CPC分类号： H02M5/4585
摘要： A dual bridge matrix converter has a line-side converter with controllable switches that receives AC power and provides unidirectional power to high and low DC link lines, and a load-side converter which receives the power from the DC link lines and provides AC power to output lines. A clamp circuit is connected across the DC link lines and includes a series connected diode and a capacitor. Negative DC link current will be conducted through the clamp diode to charge the clamp capacitor to avoid voltage spikes on the DC link lines. A controllable switch may be connected in parallel with the clamp diode and is turned on when the voltage across the clamp capacitor is above a threshold that is greater than the normal peak-to-peak AC input voltage. The switch is turned off when the voltage across the clamp capacitor is lower than the threshold voltage.
摘要翻译：双桥矩阵转换器具有可控开关的线路侧转换器，其接收AC电力并向高和低DC链路线路提供单向电力;以及负载侧转换器，其从DC链路线路接收电力并提供AC电力输出线。一个钳位电路连接在直流母线上，并包括一个串联的二极管和一个电容器。负直流链路电流将通过钳位二极管进行充电，以对钳位电容充电，以避免直流母线上的电压尖峰。可控开关可以与钳位二极管并联连接，并且当钳位电容器两端的电压高于大于正常峰 - 峰交流输入电压的阈值时导通。当钳位电容器两端的电压低于阈值电压时，开关被关闭。

49. 发明授权

US09240731B2 Power cell bypass method and apparatus for multilevel inverter 有权
标题翻译：多电平逆变器的电池旁路方法及装置
公开(公告)号：US09240731B2
公开(公告)日：2016-01-19
申请号：US13845416
申请日：2013-03-18
申请人： Lixiang Wei , Yuan Xiao , Haihui Lu , Douglas B. Weber
发明人： Lixiang Wei , Yuan Xiao , Haihui Lu , Douglas B. Weber
IPC分类号： H02M5/45 , H02M5/458 , H02M7/49 , H02M1/32
CPC分类号： H02M5/458 , H02M7/49 , H02M2001/325
摘要： Multilevel inverters, power cells and bypass methods are presented in which a power cell switching circuit is selectively disconnected from the power cell output, and a bypass which is closed to connect first and second cell output terminals to selectively bypass a power stage of a multilevel inverter, with an optional AC input switch to selectively disconnect the AC input from the power cell switching circuit during bypass.
摘要翻译：提出了多电平逆变器，功率单元和旁路方法，其中功率单元开关电路与功率单元输出选择性地断开，并且闭合的旁路连接第一和第二单元输出端子以选择性地旁路多电平逆变器的功率级具有可选的AC输入开关，用于在旁路期间选择性地断开AC电源与电源开关电路的输入。

50. 发明申请

US20150097571A1 APPARATUS AND METHOD FOR AUTOMATIC GROUND FAULT LOCATION DETERMINATION IN HIGH RESISTANCE GROUNDED MOTOR DRIVE SYSTEM 有权
标题翻译：高电压接地电机驱动系统自动接地故障定位装置及方法
公开(公告)号：US20150097571A1
公开(公告)日：2015-04-09
申请号：US14048156
申请日：2013-10-08
申请人： Lixiang Wei , Jeffrey D. McGuire , Jiangang Hu , Zhijun Liu
发明人： Lixiang Wei , Jeffrey D. McGuire , Jiangang Hu , Zhijun Liu
IPC分类号： G01R31/08 , G01R31/02
CPC分类号： G01R31/088 , B60L3/0069 , B60L3/04 , B60L2220/42 , G01R31/005 , G01R31/025 , G01R31/086 , H02H3/16 , Y02T10/646 , Y02T90/16
摘要： A PLC or other industrial controller programmed to locate ground faults in a networked high resistance grounded multi-drive system through network communications messaging to automatically place networked motor drives in various operational states to isolate individual drives for ground fault identification testing and selectively identify individual drives as suspected ground fault locations.
摘要翻译： PLC或其他工业控制器被编程为通过网络通信消息传送到联网的高电阻接地多驱动系统中的接地故障，以将网络电机驱动器自动放置在各种操作状态，以隔离各个驱动器进行接地故障识别测试，并选择性地将各个驱动器识别为怀疑接地故障位置。

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