Issued Patents All Time
Showing 1–25 of 44 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10158314 | Feedforward control of motor drives with output sinewave filter | Semyon Royak, Jingya Dai, Jingbo Liu, Robert J. Breitzmann, Peter B. Schmidt | 2018-12-18 |
| 10020766 | Current control of motor drives with output sinewave filter | Semyon Royak, Robert J. Breitzmann, Jingbo Liu, Jingya Dai, Peter B. Schmidt | 2018-07-10 |
| 9985565 | Sensorless motor drive vector control with feedback compensation for filter capacitor current | Semyon Royak, Jingya Dai, Jingbo Liu, Ehsan Al-Nabi | 2018-05-29 |
| 9880223 | Parameter estimation system and method for an induction motor | David M. Messersmith, Douglas J. Bader, Haihui Lu, Zhenhuan Yuan | 2018-01-30 |
| 9800190 | Control of motor drives with output sinewave filter capacitor current compensation using sinewave filter transfer function | Semyon Royak, Jingbo Liu, Jingya Dai, Ehsan Al-Nabi, Peter B. Schmidt | 2017-10-24 |
| 9774284 | Rotor position estimation apparatus and methods | Jingbo Liu, Peter B. Schmidt, Takayoshi Matsuo, Timothy M. Rowan | 2017-09-26 |
| 9716460 | Method and apparatus for speed reversal control of motor drive | Jingbo Liu, Semyon Royak, Peter B. Schmidt, Jingya Dai, Ehsan Al-Nabi | 2017-07-25 |
| 9627994 | Cascaded H-bridge (CHB) inverter level shift PWM with rotation | Jingbo Liu, Zhongyuan Cheng, Navid R. Zargari | 2017-04-18 |
| 9595896 | Methods and systems for sensorless closed loop motor speed and torque control | Semyon Royak, Jingya Dai, Thomas M. Cahill, Robert J. Breitzmann, Peter B. Schmidt +2 more | 2017-03-14 |
| 9490738 | Sensorless motor drive vector control | Jingbo Liu, Semyon Royak, Peter B. Schmidt, Ehsan Al-Nabi, Jingya Dai | 2016-11-08 |
| 9374028 | Transition scheme for position sensorless control of AC motor drives | Jingbo Liu, Peter B. Schmidt, Semyon Royak, Jingya Dai, Ehsan Al-Nabi | 2016-06-21 |
| 9312779 | Position sensorless open loop control for motor drives with output filter and transformer | Jingbo Liu, Peter B. Schmidt, Semyon Royak | 2016-04-12 |
| 9294019 | Method and apparatus for controlling power converter with inverter output filter | Jingbo Liu, 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 | Jingbo Liu, Peter B. Schmidt, Semyon Royak, Timothy M. Rowan | 2016-03-15 |
| 9124209 | Method and apparatus for controlling power converter with inverter output filter | Jingbo Liu, Peter B. Schmidt, Semyon Royak | 2015-09-01 |
| 9083274 | Power stage precharging and dynamic braking apparatus for multilevel inverter | Jingbo Liu | 2015-07-14 |
| 9054621 | Position sensorless open loop control for motor drives with output filter and transformer | Jingbo Liu, Peter B. Schmidt, Semyon Royak | 2015-06-09 |
| 9054611 | Method and apparatus for stability control of open loop motor drive operation | Jingbo Liu, Peter B. Schmidt, Semyon Royak | 2015-06-09 |
| 8982593 | Cascaded H-Bridge (CHB) inverter level shift PWM with rotation | Jingbo Liu, Zhongyuan Cheng, Navid R. Zargari | 2015-03-17 |
| 8742767 | Parameter estimation system and method for an induction motor | David M. Messersmith, Douglas J. Bader, Haihui Lu, Zhenhuan Yuan | 2014-06-03 |
| 8619446 | Cascaded H-bridge (CHB) inverter level shift PWM with rotation | Jingbo Liu, Zhongyuan Cheng, Navid R. Zargari | 2013-12-31 |
| 8547050 | Control method and system with feedback indicative of load flux | Haihui Lu, David M. Messersmith | 2013-10-01 |
| 8497655 | Method and apparatus for estimating rotor position in a sensorless synchronous motor | Jingbo Liu, Semyon Royak, Mark M. Harbaugh, Peter B. Schmidt | 2013-07-30 |
| 8330405 | Method and apparatus for increased current stability in a PWM drive | Semyon Royak, Mark M. Harbaugh, Jingbo Liu, Peter B. Schmidt, Robert J. Breitzmann | 2012-12-11 |
| 8228013 | Method and apparatus for automatically identifying electrical parameters in a sensor-less PMSM | Jingbo Liu, Mark M. Harbaugh, Peter B. Schmidt, Semyon Royak | 2012-07-24 |