Issued Patents All Time
Showing 26–50 of 82 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8570003 | Double fed induction generator converter and method for suppressing transient in deactivation of crowbar circuit for grid fault ridethrough | Haihui Lu, Zhenhuan Yuan, Lixiang Wei, Richard A. Lukaszewski, Ahmed Mohamed Sayed Ahmed | 2013-10-29 |
| 8519655 | DC bus boost method and system for regenerative brake | Lixiang Wei, Richard A. Lukaszewski, Brian J. Seibel | 2013-08-27 |
| 8503207 | Discontinuous pulse width drive modulation method and apparatus for reduction of common-mode voltage in power conversion systems | Rangarajan M. Tallam, David Leggate | 2013-08-06 |
| 8471516 | Adjustable speed drive lifetime improvement method | Lixiang Wei, Richard A. Lukaszewski | 2013-06-25 |
| 8432052 | Wind power converter system with grid side reactive power control | Haihui Lu, Lixiang Wei, Richard A. Lukaszewski, Zhenhuan Yuan | 2013-04-30 |
| 8352203 | Digital implementation of a tracking filter | Brian J. Seibel, Carlos Daniel Rodriguez-Valdez | 2013-01-08 |
| 8319466 | Modular line-to-ground fault identification | Carlos Rodriguez Valdez, Rangarajan M. Tallam | 2012-11-27 |
| 8188693 | DC bus boost method and system for regenerative brake | Lixiang Wei, Richard A. Lukaszewski, Brian J. Seibel | 2012-05-29 |
| 8188694 | Parallel power inverter motor drive system | Rangarajan M. Tallam, Richard H. Radosevich, Alan J. Campbell | 2012-05-29 |
| 8117008 | Junction temperature prediction method and apparatus for use in a power conversion module | Lixiang Wei, Richard A. Lukaszewski, Brian P. Brown, Neil Gollhardt, Bruce W. Weiss | 2012-02-14 |
| 8107267 | Systems and methods for common-mode voltage reduction in fully regenerative AC drives | Rangarajan M. Tallam, David Leggate | 2012-01-31 |
| 8086420 | Junction temperature prediction method and apparatus for use in a power conversion module | Lixiang Wei, Richard A. Lukaszewski, Brian P. Brown, Neil Gollhardt, Bruce W. Weiss | 2011-12-27 |
| 7894169 | High resistance ground protection employing AC drive characteristics | Carlos Rodriguez Valdez, David Dahl, Jeffrey D. McGuire, Nickolay N. Guskov | 2011-02-22 |
| 7825621 | Junction temperature reduction for three phase inverters modules | Lixiang Wei | 2010-11-02 |
| 7738267 | Systems and methods for common-mode voltage reduction in AC drives | Rangarajan M. Tallam, David Leggate | 2010-06-15 |
| 7649756 | Common mode noise reduction in converter systems through modification of single phase switching signal | Qiang Yin, Haihui Lu | 2010-01-19 |
| 7400518 | Modulation methods and apparatus for reducing common mode noise | Qiang Yin | 2008-07-15 |
| 7356441 | Junction temperature prediction method and apparatus for use in a power conversion module | Lixiang Wei, Richard A. Lukaszewski, Brian P. Brown, Neil Gollhardt, Bruce W. Weiss | 2008-04-08 |
| 7342380 | System and method for adjustable carrier waveform generator | David Leggate, Richard H. Radosevich | 2008-03-11 |
| 7164254 | Modulation methods and apparatus for reducing common mode voltages | Qiang Yin, Haihui Lu | 2007-01-16 |
| 7106025 | Cancellation of dead time effects for reducing common mode voltages | Qiang Yin, Richard A. Lukaszewski | 2006-09-12 |
| 7034501 | Adjusting gate pulse time intervals for reflected wave mitigation | Jerry Thunes, Takayoshi Matsuo | 2006-04-25 |
| 6982533 | Method and apparatus to regulate loads | Brian J. Seibel | 2006-01-03 |
| 6819077 | Method and apparatus for reducing sampling related errors in a modulating waveform generator used with a PWM controller | Brian J. Seibel | 2004-11-16 |
| 6819070 | Method and apparatus for controlling reflected voltage using a motor controller | David Leggate | 2004-11-16 |