Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10527661 | Calculating a load resistance | Russel J. Kerkman, Brian J. Seibel | 2020-01-07 |
| 10250161 | Adaptive harmonic elimination compensation for voltage distortion elements | Russel J. Kerkman | 2019-04-02 |
| 9584043 | Inverter phase current reconstruction apparatus and methods | Zhendong Zhang, Takayoshi Matsuo, Timothy M. Rowan, Russel J. Kerkman, Bing Li | 2017-02-28 |
| 9036382 | Method and apparatus for ripple and phase loss detection | Bing Li, Timothy M. Rowan | 2015-05-19 |
| 8503207 | Discontinuous pulse width drive modulation method and apparatus for reduction of common-mode voltage in power conversion systems | Rangarajan M. Tallam, Russel J. Kerkman | 2013-08-06 |
| 8488345 | Pulse width modulation control method and system for mitigating reflected wave effects in over-modulation region | Rangarajan M. Tallam | 2013-07-16 |
| 8107267 | Systems and methods for common-mode voltage reduction in fully regenerative AC drives | Rangarajan M. Tallam, Russel J. Kerkman | 2012-01-31 |
| 7881081 | Systems and methods for reducing AC drive common-mode currents | Rangarajan M. Tallam, David W. Kirschnik, Richard A. Lukaszewski | 2011-02-01 |
| 7738267 | Systems and methods for common-mode voltage reduction in AC drives | Rangarajan M. Tallam, Russel J. Kerkman | 2010-06-15 |
| 7626836 | Method and apparatus for adjustable voltage/adjustable frequency inverter control | Gary L. Skibinski, Gary R. Woltersdorf | 2009-12-01 |
| 7342380 | System and method for adjustable carrier waveform generator | Russel J. Kerkman, Richard H. Radosevich | 2008-03-11 |
| 6819070 | Method and apparatus for controlling reflected voltage using a motor controller | Russel J. Kerkman | 2004-11-16 |
| 6617821 | Method and apparatus for compensating for device dynamics by adjusting inverter carrier frequency | Russel J. Kerkman, David W. Schlegel | 2003-09-09 |
| 6541933 | Angle control of modulating wave to reduce reflected wave overvoltage transients | Russel J. Kerkman | 2003-04-01 |
| 6477067 | Method and apparatus for compensating for device dynamics in inverter based control systems | Russel J. Kerkman | 2002-11-05 |
| 6469916 | Method and apparatus for compensating for device dynamics and voltage drop in inverter based control systems | Russel J. Kerkman | 2002-10-22 |
| 6014497 | Method and apparatus for determining a critical dwell time for use in motor controls | Russel J. Kerkman, Gary L. Skibinski | 2000-01-11 |
| 5990658 | Apparatus for controlling reflected voltage on motor supply lines | Russel J. Kerkman, Gary L. Skibinski | 1999-11-23 |
| 5917721 | Apparatus for reducing the effects of turn on delay errors in motor control | Russel J. Kerkman | 1999-06-29 |
| 5912813 | Method and apparatus for controlling reflected voltage using a motor controller | Russel J. Kerkman, Gary L. Skibinski, Ahmet M. Hava | 1999-06-15 |
| 5671130 | Method and apparatus for controlling voltage reflections using a motor controller | Russel J. Kerkman, Gary L. Skibinski | 1997-09-23 |
| 5625550 | Apparatus used with AC motors for compensating for turn on delay errors | Russel J. Kerkman | 1997-04-29 |
| 5329217 | Compensated feedforward voltage for a PWM AC motor drive | Russel J. Kerkman | 1994-07-12 |
| 5121043 | PWM control in the pulse dropping region | Russel J. Kerkman, Brian J. Seibel | 1992-06-09 |