Issued Patents All Time
Showing 26–40 of 40 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9294019 | Method and apparatus for controlling power converter with inverter output filter | Thomas A. Nondahl, Peter B. Schmidt, Semyon Royak, Jingya Dai, Ehsan Al-Nabi | 2016-03-22 |
| 9287812 | Method and apparatus for stability control of open loop motor drive operation | Thomas A. Nondahl, Peter B. Schmidt, Semyon Royak, Timothy M. Rowan | 2016-03-15 |
| 9124209 | Method and apparatus for controlling power converter with inverter output filter | Thomas A. Nondahl, Peter B. Schmidt, Semyon Royak | 2015-09-01 |
| 9083274 | Power stage precharging and dynamic braking apparatus for multilevel inverter | Thomas A. Nondahl | 2015-07-14 |
| 9054621 | Position sensorless open loop control for motor drives with output filter and transformer | Thomas A. Nondahl, Peter B. Schmidt, Semyon Royak | 2015-06-09 |
| 9054611 | Method and apparatus for stability control of open loop motor drive operation | Thomas A. Nondahl, Peter B. Schmidt, Semyon Royak | 2015-06-09 |
| 8982593 | Cascaded H-Bridge (CHB) inverter level shift PWM with rotation | Thomas A. Nondahl, Zhongyuan Cheng, Navid R. Zargari | 2015-03-17 |
| 8619446 | Cascaded H-bridge (CHB) inverter level shift PWM with rotation | Thomas A. Nondahl, Zhongyuan Cheng, Navid R. Zargari | 2013-12-31 |
| 8497655 | Method and apparatus for estimating rotor position in a sensorless synchronous motor | Semyon Royak, Mark M. Harbaugh, Thomas A. Nondahl, Peter B. Schmidt | 2013-07-30 |
| 8330405 | Method and apparatus for increased current stability in a PWM drive | Semyon Royak, Mark M. Harbaugh, Thomas A. Nondahl, Peter B. Schmidt, Robert J. Breitzmann | 2012-12-11 |
| 8228013 | Method and apparatus for automatically identifying electrical parameters in a sensor-less PMSM | Mark M. Harbaugh, Thomas A. Nondahl, Peter B. Schmidt, Semyon Royak | 2012-07-24 |
| 8159168 | Rotor position estimator for an electrical machine | Thomas A. Nondahl, Peter B. Schmidt, Semyon Royak, Mark H. Harbaugh | 2012-04-17 |
| 7944164 | Method and apparatus for identifying orientation of a stationary rotor in a sensor-less PMSM | Thomas A. Nondahl, Peter B. Schmidt, Semyon Royak, Mark M. Harbaugh | 2011-05-17 |
| 7915852 | Universal adaptive torque control for PM motors for field-weakening region operation | Semyon Royak, Mark M. Harbaugh, Robert J. Breitzmann, Thomas A. Nondahl, Peter B. Schmidt | 2011-03-29 |
| 7609014 | System and method for universal adaptive torque control of permanent magnet motors | Semyon Royak, Peter B. Schmidt, Thomas A. Nondahl, Mark M. Harbaugh, Robert John Breitzman | 2009-10-27 |