Wei; Lixiang

Patent Applications and Registrations

Patent applications and USPTO patent grants for Wei; Lixiang.The latest application filed is for "open loop phase pre-charge".

Company Profile

10.127.115

Wei; Lixiang - Mequon WI
Wei; Lixiang - Milwaukee WI
Wei; Lixiang - Whitefish Bay WI

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
System and method for ground fault detection Grant 11,402,436 - Hu , et al. August 2, 2	2022-08-02
Motor stator resistance calculation Grant 11,366,147 - Wei , et al. June 21, 2	2022-06-21
Switching frequency and PWM control to extend power converter lifetime Grant 11,336,206 - Cui , et al. May 17, 2	2022-05-17
Open Loop Phase Pre-charge App 20220103090 - Wei; Lixiang ; et al.	2022-03-31
Switching Frequency And Pwm Control To Extend Power Converter Lifetime App 20220094259 - Cui; Yujia ; et al.	2022-03-24
Motor Stator Resistance Calculation App 20220065909 - Wei; Lixiang ; et al.	2022-03-03
System And Method For Ground Fault Detection App 20210325478 - Hu; Jiangang ; et al.	2021-10-21
SCR based AC precharge protection Grant 11,025,052 - Roberts , et al. June 1, 2	2021-06-01
Multi-segment and nonlinear droop control for parallel operating active front end power converters Grant 10,811,990 - Mohamed Sayed Ahmed , et al. October 20, 2	2020-10-20
Multi-segment And Nonlinear Droop Control For Parallel Operating Active Front End Power Converters App 20200313565 - Mohamed Sayed Ahmed; Ahmed S. ; et al.	2020-10-01
Bootstrap charging by PWM control Grant 10,784,797 - Sedano , et al. Sept	2020-09-22
Automatic system grounding condition detection Grant 10,725,116 - Wei , et al.	2020-07-28
Power conversion system with PWM carrier emulation Grant 10,541,626 - Lamb , et al. Ja	2020-01-21
Power conversion system and filter therefor Grant 10,476,381 - Sartler , et al. Nov	2019-11-12
Motor drive with silicon carbide MOSFET switches Grant 10,389,263 - Baumann , et al. A	2019-08-20
Apparatus for reduced voltage stress on AC motors and cables Grant 10,389,213 - Xiao , et al. A	2019-08-20
Scr Based Ac Precharge Protection App 20190229521 - Roberts; Andrew J. ; et al.	2019-07-25
Method And Apparatus For Bypassing Cascaded H-bridge (chb) Power Cells And Power Sub Cell For Multilevel Inverter App 20190214899 - Zargari; Navid R. ; et al.	2019-07-11
Automatic System Grounding Condition Detection App 20190204374 - Wei; Lixiang ; et al.	2019-07-04
System and method for ground fault detection Grant 10,302,688 - Hu , et al.	2019-05-28
Method and apparatus for bypassing Cascaded H-Bridge (CHB) power cells and power sub cell for multilevel inverter Grant 10,305,368 - Zargari , et al.	2019-05-28
Compact inductor Grant 10,217,555 - Sun , et al. Feb	2019-02-26
Common voltage reduction for active front end drives Grant 10,158,299 - Wei , et al. Dec	2018-12-18
Power Conversion System With Conditioner Capacitor Discharge Apparatus App 20180183348 - Hu; Jiangang ; et al.	2018-06-28
Power conversion system with conditioner capacitor discharge apparatus Grant 10,008,952 - Hu , et al. June 26, 2	2018-06-26
Converter lifetime improvement method for doubly fed induction generator Grant 9,998,030 - Wei , et al. June 12, 2	2018-06-12
Motor Drive With Silicon Carbide Mosfet Switches App 20180145602 - Wei; Lixiang ; et al.	2018-05-24
Method And Apparatus For Bypassing Cascaded H-bridge (chb) Power Cells And Power Sub Cell For Multilevel Inverter App 20180145578 - Zargari; Navid R. ; et al.	2018-05-24
Active front end power converter with boost mode derating to protect filter inductor Grant 9,973,137 - Patel , et al. May 15, 2	2018-05-15
Motor drive with resonance detection and impedance computation Grant 9,960,723 - Zhang , et al. May 1, 2	2018-05-01
Apparatus For Reduced Voltage Stress On Ac Motors And Cables App 20180083514 - Xiao; Yuan ; et al.	2018-03-22
Motor drive filter damping Grant 9,923,469 - Xiao , et al. March 20, 2	2018-03-20
Method and apparatus for bypassing cascaded h-bridge (CHB) power cells and power sub cell for multilevel inverter Grant 9,912,221 - Zargari , et al. March 6, 2	2018-03-06
Motor Drive With Silicon Carbide Mosfet Switches App 20180026544 - Baumann; Kevin ; et al.	2018-01-25
Precharge Apparatus For Power Conversion System App 20170353120 - Wei; Lixiang ; et al.	2017-12-07
Motor Drive With Resonance Detection And Impedance Computation App 20170353138 - Zhang; Shaofeng ; et al.	2017-12-07
Precharge apparatus for power conversion system Grant 9,837,924 - Wei , et al. December 5, 2	2017-12-05
LCL filter resonance mitigation technique for voltage source converters Grant 9,819,255 - Patel , et al. November 14, 2	2017-11-14
Motor Drive Filter Damping App 20170324333 - Xiao; Yuan ; et al.	2017-11-09
Motor drive with LCL filter inductor with built-in passive damping resistor for AFE rectifier Grant 9,800,134 - Patel , et al. October 24, 2	2017-10-24
Power cell bypass method and apparatus for multilevel inverter Grant 9,787,213 - Wei , et al. October 10, 2	2017-10-10
Motor drive with silicon carbide MOSFET switches Grant 9,787,212 - Baumann , et al. October 10, 2	2017-10-10
Compact Inductor App 20170178782 - Sun; Xikai ; et al.	2017-06-22
Apparatus and method for automatic ground fault location determination in high resistance grounded motor drive system Grant 9,684,026 - Wei , et al. June 20, 2	2017-06-20
Power converter resonance detection apparatus and method Grant 9,667,128 - Patel , et al. May 30, 2	2017-05-30
Filter capacitor degradation detection apparatus and method Grant 9,653,984 - Patel , et al. May 16, 2	2017-05-16
Multifunction power converter with option for integrated magnetics Grant 9,654,021 - Wei , et al. May 16, 2	2017-05-16
System And Method For Ground Fault Detection App 20170131341 - Hu; Jiangang ; et al.	2017-05-11
Systems and methods for testing motor drives Grant 9,645,194 - Patel , et al. May 9, 2	2017-05-09
Drive failure protection Grant 9,625,519 - Xiao , et al. April 18, 2	2017-04-18
System for detection of a ground fault in a high resistance ground network Grant 9,612,269 - Wei , et al. April 4, 2	2017-04-04
Apparatus and method for automatic ground fault location determination in high resistance grounded motor drive system Grant 9,604,543 - Hu , et al. March 28, 2	2017-03-28
Double fed induction generator (DFIG) converter and method for improved grid fault ridethrough Grant 9,590,547 - Lu , et al. March 7, 2	2017-03-07
Active Front End Power Converter With Boost Mode Derating To Protect Filter Inductor App 20170025981 - Patel; Yogesh ; et al.	2017-01-26
DC pre charge circuit Grant 9,553,533 - Weiss , et al. January 24, 2	2017-01-24
Method And Apparatus For Bypassing Cascaded H-bridge (chb) Power Cells And Power Sub Cell For Multilevel Inverter App 20160344278 - Zargari; Navid R. ; et al.	2016-11-24
Active front end power converter with boost mode derating to protect filter inductor Grant 9,461,559 - Patel , et al. October 4, 2	2016-10-04
Motor Drive With Lcl Filter Inductor With Built-in Passive Damping Resistor For Afe Rectifier App 20160248334 - Patel; Yogesh P. ; et al.	2016-08-25
Method and apparatus for bypassing cascaded H-bridge (CHB) power cells and power sub cell for multilevel inverter Grant 9,425,705 - Zargari , et al. August 23, 2	2016-08-23
Filter capacitor degradation identification using measured and expected voltage Grant 9,389,263 - Sartler , et al. July 12, 2	2016-07-12
HRG ground fault detector and method using phase inputs to generate a simulated neutral voltage Grant 9,383,399 - Wei , et al. July 5, 2	2016-07-05
Adjustable Pwm Method To Increase Low Speed Starting Torque And Inverter Voltage Measurement Accuracy App 20160126861 - Wei; Lixiang ; et al.	2016-05-05
Method and apparatus for islanding detection for grid tie converters Grant 9,331,487 - Yuan , et al. May 3, 2	2016-05-03
Power Cell Bypass Method And Apparatus For Multilevel Inverter App 20160111967 - Wei; Lixiang ; et al.	2016-04-21
Adjustable PWM method to increase low speed starting torque and inverter voltage measurement accuracy Grant 9,318,976 - Wei , et al. April 19, 2	2016-04-19
Power cell bypass method and apparatus for multilevel inverter Grant 9,240,731 - Wei , et al. January 19, 2	2016-01-19
Lcl Filter Resonance Mitigation Technique For Voltage Source Converters App 20160013715 - Patel; Yogesh P. ; et al.	2016-01-14
Methods and power conversion system control apparatus to control IGBT junction temperature at low speed Grant 9,236,828 - Wei , et al. January 12, 2	2016-01-12
Methods And Power Conversion System Control Apparatus To Control Igbt Junction Temperature At Low Speed App 20160006367 - Wei; Lixiang ; et al.	2016-01-07
Apparatus And Method For Automatic Ground Fault Location Determination In High Resistance Grounded Motor Drive System App 20150355262 - Hu; Jiangang ; et al.	2015-12-10
Filter Capacitor Degradation Identification Using Measured And Expected Voltage App 20150355259 - Sartler; Christian ; et al.	2015-12-10
Motor Drive With Silicon Carbide Mosfet Switches App 20150318791 - Baumann; Kevin ; et al.	2015-11-05
Systems And Methods For Testing Motor Drives App 20150253381 - Patel; Yogesh ; et al.	2015-09-10
Dc Pre-charge Circuit App 20150256112 - Weiss; Bruce W. ; et al.	2015-09-10
Double Fed Induction Generator (dfig) Converter And Method For Improved Grid Fault Ridethrough App 20150229257 - Lu; Haihui ; et al.	2015-08-13
Method to implement drive diagnostics and prognostics automatically Grant 9,092,030 - Weiss , et al. July 28, 2	2015-07-28
Fault identification techniques for high resistance grounded systems Grant 9,091,742 - Wei , et al. July 28, 2	2015-07-28
Method And Apparatus For Bypassing Cascaded H-bridge (chb) Power Cells And Power Sub Cell For Multilevel Inverter App 20150171733 - Zargari; Navid R. ; et al.	2015-06-18
Methods and apparatus for continuous and discontinuous active rectifier boost operation to increase power converter rating Grant 9,054,586 - Wei , et al. June 9, 2	2015-06-09
Power converter and integrated DC choke therefor Grant 9,054,599 - Wei , et al. June 9, 2	2015-06-09
Adjustable speed drive lifetime improvement system Grant 9,048,755 - Wei , et al. June 2, 2	2015-06-02
Method And Apparatus For Current Auto Balancing For Parallel Converter Systems App 20150145462 - Ulrich; James A. ; et al.	2015-05-28
Double fed induction generator (DFIG) converter and method for improved grid fault ridethrough Grant 9,041,234 - Lu , et al. May 26, 2	2015-05-26
DC pre-charge circuit Grant 9,042,146 - Weiss , et al. May 26, 2	2015-05-26
Method and apparatus for bypassing Cascaded H-Bridge (CHB) power cells and power sub cell for multilevel inverter Grant 9,007,787 - Zargari , et al. April 14, 2	2015-04-14
Multifunction Power Converter With Option For Integrated Magnetics App 20150098257 - Wei; Lixiang ; et al.	2015-04-09
Apparatus And Method For Automatic Ground Fault Location Determination In High Resistance Grounded Motor Drive System App 20150097571 - Wei; Lixiang ; et al.	2015-04-09
Hrg Ground Fault Detector And Method App 20150091582 - Wei; Lixiang ; et al.	2015-04-02
Single phase operation of a three-phase drive system Grant 8,988,026 - Ahmed , et al. March 24, 2	2015-03-24
AC pre-charge circuit Grant 8,953,296 - Weiss , et al. February 10, 2	2015-02-10
Ground Scheme Identification Method App 20150009726 - Wei; Lixiang ; et al.	2015-01-08
Method of fabricating a choke assembly Grant 8,910,372 - Brubaker , et al. December 16, 2	2014-12-16
Ground scheme identification method Grant 8,841,917 - Wei , et al. September 23, 2	2014-09-23
Power Cell Bypass Method And Apparatus For Multilevel Inverter App 20140268928 - Wei; Lixiang ; et al.	2014-09-18
Active Front End Power Converter With Boost Mode Derating To Protect Filter Inductor App 20140268953 - Patel; Yogesh ; et al.	2014-09-18
Method And Apparatus For Islanding Detection For Grid Tie Converters App 20140265596 - YUAN; Zhenhuan ; et al.	2014-09-18
Method To Implement Drive Diagnostics And Prognostics Automatically App 20140265976 - Weiss; Bruce William ; et al.	2014-09-18
Methods And Apparatus For Continuous And Discontinuous Active Rectifier Boost Operation To Increase Power Converter Rating App 20140268954 - Wei; Lixiang ; et al.	2014-09-18
Converter Lifetime Improvement Method For Doubly Fed Induction Generator App 20140253055 - Wei; Lixiang ; et al.	2014-09-11
Apparatus and method for energy efficient motor drive standby operation Grant 8,816,631 - Wei , et al. August 26, 2	2014-08-26
System For Detection Of A Ground Fault In A High Resistance Ground Network App 20140225625 - Wei; Lixiang ; et al.	2014-08-14
Converter lifetime improvement method for doubly fed induction generator Grant 8,736,091 - Wei , et al. May 27, 2	2014-05-27
Drive Failure Protection App 20140132295 - Xiao; Yuan ; et al.	2014-05-15
System for detection of a ground fault in a high resistance ground network Grant 8,698,504 - Wei , et al. April 15, 2	2014-04-15
Method And Apparatus For Bypassing Cascaded H-bridge (chb) Power Cells And Power Sub Cell For Multilevel Inverter App 20140042817 - Zargari; Navid ; et al.	2014-02-13
Single Phase Operation Of A Three-phase Drive System App 20140035492 - Ahmed; Ahmed Mohamed Sayed ; et al.	2014-02-06
Drive failure protection Grant 8,643,383 - Xiao , et al. February 4, 2	2014-02-04
Method and apparatus for detecting a location of ground faults in a motor/motor drive combination Grant 8,593,150 - Vrankovic , et al. November 26, 2	2013-11-26
Adjustable Speed Drive Lifetime Improvement System App 20130286702 - Wei; Lixiang ; et al.	2013-10-31
Power Converter Resonance Detection Apparatus And Method App 20130289911 - Patel; Yogesh Popatlal ; et al.	2013-10-31
Filter Capacitor Degradation Detection Apparatus And Method App 20130286692 - Patel; Yogesh Popatlal ; et al.	2013-10-31
CMV reduction under bus transient condition Grant 8,570,775 - Wei , et al. October 29, 2	2013-10-29
Double fed induction generator converter and method for suppressing transient in deactivation of crowbar circuit for grid fault ridethrough Grant 8,570,003 - Lu , et al. October 29, 2	2013-10-29
Double Fed Induction Generator (dfig) Converter And Method For Improved Grid Fault Ridethrough App 20130249501 - Lu; Haihui ; et al.	2013-09-26
Power Converter And Integrated Dc Choke Therefor App 20130242623 - Wei; Lixiang ; et al.	2013-09-19
Apparatus And Method For Energy Efficient Motor Drive Standby Operation App 20130241451 - Wei; Lixiang ; et al.	2013-09-19
Power converter and integrated DC choke therefor Grant 8,537,575 - Xiao , et al. September 17, 2	2013-09-17
DC bus boost method and system for regenerative brake Grant 8,519,655 - Wei , et al. August 27, 2	2013-08-27
Fault Identification Techniques For High Resistance Grounded Systems App 20130218491 - Wei; Lixiang ; et al.	2013-08-22
Adjustable speed drive lifetime improvement method Grant 8,471,516 - Wei , et al. June 25, 2	2013-06-25
Power Converter And Integrated Dc Choke Therefor App 20130141950 - Xiao; Yuan ; et al.	2013-06-06
Ac Pre-charge Circuit App 20130119903 - Weiss; Bruce W. ; et al.	2013-05-16
Dc Pre-charge Circuit App 20130121051 - Weiss; Bruce W. ; et al.	2013-05-16
Wind power converter system with grid side reactive power control Grant 8,432,052 - Lu , et al. April 30, 2	2013-04-30
Ground fault detection system and method Grant 8,433,528 - Winterhalter , et al. April 30, 2	2013-04-30
Multi-phase transformer Grant 8,395,469 - Skibinski , et al. March 12, 2	2013-03-12
Multi-phase transformer Grant 8,390,414 - Wei , et al. March 5, 2	2013-03-05
Power converter and integrated DC choke therefor Grant 8,379,417 - Xiao , et al. February 19, 2	2013-02-19
Power Converter And Integrated Dc Choke Therefor App 20130010504 - XIAO; YUAN ; et al.	2013-01-10
Thirty-six pulse power transformer and power converter incorporating same Grant 8,339,820 - Wei , et al. December 25, 2	2012-12-25
Double Fed Induction Generator Converter And Method For Suppressing Transient In Deactivation Of Crowbar Circuit For Grid Fault Ridethrough App 20120262129 - Lu; Haihui ; et al.	2012-10-18
Ground Scheme Identification Method App 20120249038 - Wei; Lixiang ; et al.	2012-10-04
Dc Bus Boost Method And System For Regenerative Brake App 20120235607 - Wei; Lixiang ; et al.	2012-09-20
Cmv Reduction Under Bus Transient Condition App 20120212982 - Wei; Lixiang ; et al.	2012-08-23
Power transformer and power converter incorporating same Grant 8,243,481 - Wei , et al. August 14, 2	2012-08-14
Power Converter With Common Mode Voltage Reduction App 20120201056 - Wei; Lixiang ; et al.	2012-08-09
Drive Failure Protection App 20120194202 - Xiao; Yuan ; et al.	2012-08-02
DC bus clamp circuit to prevent over voltage failure of adjustable speed drives Grant 8,233,258 - Wei , et al. July 31, 2	2012-07-31
Power Electronic Module With An Improved Choke And Methods Of Making Same App 20120144658 - Brubaker; John R. ; et al.	2012-06-14
DC bus boost method and system for regenerative brake Grant 8,188,693 - Wei , et al. May 29, 2	2012-05-29
Ground Fault Detection and Location System and Method for Motor Drives App 20120112757 - Vrankovic; Zoran V. ; et al.	2012-05-10
Multi-phase Transformer App 20120086532 - Skibinski; Gary L. ; et al.	2012-04-12
Multi-phase Transformer App 20120086533 - Wei; Lixiang ; et al.	2012-04-12
System For Detection Of A Ground Fault In A High Resistance Ground Network App 20120086458 - Wei; Lixiang ; et al.	2012-04-12
Power electronic module IGBT protection method and system Grant 8,148,929 - Wei , et al. April 3, 2	2012-04-03
Power electronic module with an improved choke and methods of making same Grant 8,125,304 - Brubaker , et al. February 28, 2	2012-02-28
Junction temperature prediction method and apparatus for use in a power conversion module Grant 8,117,008 - Kerkman , et al. February 14, 2	2012-02-14
Junction temperature prediction method and apparatus for use in a power conversion module Grant 8,086,420 - Kerkman , et al. December 27, 2	2011-12-27
Converter Lifetime Improvement Method For Doubly Fed Induction Generator App 20110309875 - Wei; Lixiang ; et al.	2011-12-22
Wind Power Converter System With Grid Side Reactive Power Control App 20110295437 - Lu; Haihui ; et al.	2011-12-01
Adjustable Speed Drive Lifetime Improvement Method App 20110286244 - Wei; Lixiang ; et al.	2011-11-24
Ground Fault Detection System And Method App 20110153234 - Winterhalter; Craig R. ; et al.	2011-06-23
Power Transformer And Power Converter Incorporating Same App 20110103105 - Wei; Lixiang ; et al.	2011-05-05
Thirty-six Pulse Power Transformer And Power Converter Incorporating Same App 20110103096 - Wei; Lixiang ; et al.	2011-05-05
Dc Bus Boost Method And System For Regenerative Brake App 20110101897 - Wei; Lixiang ; et al.	2011-05-05
Electric motor drive employing hybrid, hysteretic/pulse-width-modulated dynamic braking Grant 7,906,922 - Thunes , et al. March 15, 2	2011-03-15
Power electronic module pre-charge system and method Grant 7,830,036 - Wei , et al. November 9, 2	2010-11-09
Junction temperature reduction for three phase inverters modules Grant 7,825,621 - Wei , et al. November 2, 2	2010-11-02
Power module life estimation fatigue function Grant 7,826,985 - Weiss , et al. November 2, 2	2010-11-02
Dc Bus Clamp Circuit To Prevent Over Voltage Failure Of Adjustable Speed Drives App 20100177452 - Wei; Lixiang ; et al.	2010-07-15
System and method for controlling input line harmonics in a motor drive Grant 7,728,544 - Qian , et al. June 1, 2	2010-06-01
Power Electronic Module With An Improved Choke And Methods Of Making Same App 20100079230 - Brubaker; John R. ; et al.	2010-04-01
Power Electronic Module Pre-charge System And Method App 20100078998 - Wei; Lixiang ; et al.	2010-04-01
Power Electronic Module Igbt Protection Method And System App 20100080024 - Wei; Lixiang ; et al.	2010-04-01
Power Module Life Estimation Fatigue Function App 20090276165 - Weiss; Bruce W. ; et al.	2009-11-05
Compensator with filter for use with a three-phase drive powering a one-phase load Grant 7,602,622 - Wei , et al. October 13, 2	2009-10-13
Electric Motor Drive Employing Hybrid, Hysteretic/pulse-width-modulated Dynamic Braking App 20090251081 - Thunes; Jerry Dee ; et al.	2009-10-08
Method and apparatus including multi-drive configurations for medium voltage loads Grant 7,535,738 - Wei , et al. May 19, 2	2009-05-19
Auxiliary circuit for use with three-phase drive with current source inverter powering a single-phase load Grant 7,518,891 - Wei , et al. April 14, 2	2009-04-14
Rectifier for reducing current harmonics from unbalanced source Grant 7,502,238 - Wei , et al. March 10, 2	2009-03-10
Junction Temperature Reduction For Three Phase Inverters Modules App 20090058350 - Wei; Lixiang ; et al.	2009-03-05
Compensation circuit for use with a three-phase drive powering a single-phase load Grant 7,477,531 - Wei , et al. January 13, 2	2009-01-13
System and Method for Controlling Input Line Harmonics in a Motor Drive App 20080278109 - Qian; Wei ; et al.	2008-11-13
Junction Temperature Prediction Method And Apparatus For Use In A Power Conversion Module App 20080140350 - Kerkman; Russel J. ; et al.	2008-06-12
Junction Temperature Prediction Method And Apparatus For Use In A Power Conversion Module App 20080140351 - Kerkman; Russel J. ; et al.	2008-06-12
Junction temperature prediction method and apparatus for use in a power conversion module Grant 7,356,441 - Kerkman , et al. April 8, 2	2008-04-08
Method and apparatus including multi-drive configurations for medium voltage loads App 20080049468 - Wei; Lixiang ; et al.	2008-02-28
Junction temperature prediction method and apparatus for use in a power conversion module App 20070073510 - Kerkman; Russel J. ; et al.	2007-03-29
Pulse width modulation (PWM) rectifier with variable switching frequency Grant 7,190,143 - Wei , et al. March 13, 2	2007-03-13
Compensator With Filter For Use With A Three-phase Drive Powering A One-phase Load App 20070030708 - Wei; Lixiang ; et al.	2007-02-08
Compensation Circuit For Use With A Three-phase Drive Powering A Single-phase Load App 20070030706 - Wei; Lixiang ; et al.	2007-02-08
Auxiliary Circuit For Use With Three-phase Drive With Current Source Inverter Powering A Single-phase Load App 20070030707 - Wei; Lixiang ; et al.	2007-02-08
Pulse width modulation (PWM) rectifier with variable switching frequency App 20060267542 - Wei; Lixiang ; et al.	2006-11-30
Rectifier for reducing current harmonics from unbalanced source App 20060227582 - Wei; Lixiang ; et al.	2006-10-12
Dual bridge matrix converter Grant 6,995,992 - Wei , et al. February 7, 2	2006-02-07
Dual bridge matrix converter App 20050099829 - Wei, Lixiang ; et al.	2005-05-12