| 10158314 |
Feedforward control of motor drives with output sinewave filter |
Semyon Royak, Jingya Dai, Thomas A. Nondahl, Jingbo Liu, Peter B. Schmidt |
2018-12-18 |
| 10020766 |
Current control of motor drives with output sinewave filter |
Semyon Royak, Jingbo Liu, Thomas A. Nondahl, Jingya Dai, Peter B. Schmidt |
2018-07-10 |
| 9595896 |
Methods and systems for sensorless closed loop motor speed and torque control |
Semyon Royak, Thomas A. Nondahl, Jingya Dai, Thomas M. Cahill, Peter B. Schmidt +2 more |
2017-03-14 |
| 9331487 |
Method and apparatus for islanding detection for grid tie converters |
Zhenhuan Yuan, Shaofeng Zhang, Haihui Lu, Lixiang Wei, Russel J. Kerkman +2 more |
2016-05-03 |
| 9318944 |
Methods and apparatus for active front end filter capacitor degradation detection |
Semyon Royak |
2016-04-19 |
| 9041327 |
Method and apparatus for overvoltage protection and reverse motor speed control for motor drive power loss events |
Semyon Royak, John M. Kasunich |
2015-05-26 |
| 8902616 |
Active front end power converter with diagnostic and failure prevention using peak detector with decay |
Semyon Royak, John M. Kasunich, John James Jenks |
2014-12-02 |
| 8330405 |
Method and apparatus for increased current stability in a PWM drive |
Semyon Royak, Mark M. Harbaugh, Thomas A. Nondahl, Jingbo Liu, Peter B. Schmidt |
2012-12-11 |
| 8009450 |
Method and apparatus for phase current balance in active converter with unbalanced AC line voltage source |
Semyon Royak, Mark M. Harbaugh |
2011-08-30 |
| 7915852 |
Universal adaptive torque control for PM motors for field-weakening region operation |
Semyon Royak, Mark M. Harbaugh, Thomas A. Nondahl, Peter B. Schmidt, Jingbo Liu |
2011-03-29 |
| 7355865 |
Method and apparatus for rejecting the second harmonic current in an active converter with an unbalanced AC line voltage source |
Semyon Royak |
2008-04-08 |
| 7135834 |
Modified field oriented control |
Michael J. Melfi |
2006-11-14 |
| 5530323 |
Drive synchronization system for plural motor systems |
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1996-06-25 |