Issued Patents All Time
Showing 26–50 of 52 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7848122 | Terminator for reducing differential-mode and common-mode voltage reflections in AC motor drives | Rangarajan M. Tallam | 2010-12-07 |
| 7724549 | Integrated power conditioning system and housing for delivering operational power to a motor | John A. Wilkins, Rick Hoadley, Nick Guskov, Dennis Braun | 2010-05-25 |
| 7626836 | Method and apparatus for adjustable voltage/adjustable frequency inverter control | David Leggate, Gary R. Woltersdorf | 2009-12-01 |
| 7602622 | Compensator with filter for use with a three-phase drive powering a one-phase load | Lixiang Wei, Richard A. Lukaszewski | 2009-10-13 |
| 7535738 | Method and apparatus including multi-drive configurations for medium voltage loads | Lixiang Wei, Richard A. Lukaszewski | 2009-05-19 |
| 7518891 | Auxiliary circuit for use with three-phase drive with current source inverter powering a single-phase load | Lixiang Wei, Richard A. Lukaszewski | 2009-04-14 |
| 7502238 | Rectifier for reducing current harmonics from unbalanced source | Lixiang Wei, Richard A. Lukaszewski | 2009-03-10 |
| 7477531 | Compensation circuit for use with a three-phase drive powering a single-phase load | Lixiang Wei, Richard A. Lukaszewski | 2009-01-13 |
| 7113065 | Modular inductor for use in power electronic circuits | — | 2006-09-26 |
| 6998950 | Method of making an electric inductor and inductor made by same | — | 2006-02-14 |
| 6657322 | Control system for active power filters | Dongsheng Zhou, Frederick L. Hoadley, Naihu Li, Qiang Yin | 2003-12-02 |
| 6549434 | Harmonic mitigating method and apparatus | Dongsheng Zhou, Walt A. Maslowski, Brian R. Buchholz, Nick Guskov | 2003-04-15 |
| 6385064 | Harmonic blocking reactor for nine-phase converter system | Dongsheng Zhou, Walt A. Maslowski, Brian R. Buchholz, Bruce A. Hachey, Nickolay N. Guskov | 2002-05-07 |
| 6335872 | Nine-phase transformer | Dongsheng Zhou, Nickolay N. Guskov | 2002-01-01 |
| 6249443 | Nine-phase transformer | Dongsheng Zhou, Nickolay N. Guskov | 2001-06-19 |
| 6208537 | Series resonant sinewave output filter and design methodology | Brian R. Buchholz | 2001-03-27 |
| 6198647 | Twelve-phase transformer configuration | Dongsheng Zhou, Nickolay N. Guskov | 2001-03-06 |
| 6014497 | Method and apparatus for determining a critical dwell time for use in motor controls | Russel J. Kerkman, David Leggate | 2000-01-11 |
| 5990654 | Apparatus for eliminating motor voltage reflections and reducing EMI currents | Henrik Nielsen | 1999-11-23 |
| 5990658 | Apparatus for controlling reflected voltage on motor supply lines | Russel J. Kerkman, David Leggate | 1999-11-23 |
| 5912813 | Method and apparatus for controlling reflected voltage using a motor controller | Russel J. Kerkman, David Leggate, Ahmet M. Hava | 1999-06-15 |
| 5831410 | Apparatus used with AC motors for eliminating line voltage reflections | — | 1998-11-03 |
| 5705971 | Low leakage coaxial transformers | — | 1998-01-06 |
| 5671130 | Method and apparatus for controlling voltage reflections using a motor controller | Russel J. Kerkman, David Leggate | 1997-09-23 |
| 5661353 | Electrostatic shield for AC motor | Jay M. Erdman, Russel J. Kerkman, David W. Schlegel | 1997-08-26 |