Issued Patents All Time
Showing 1–25 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10158314 | Feedforward control of motor drives with output sinewave filter | Jingya Dai, Thomas A. Nondahl, Jingbo Liu, Robert J. Breitzmann, Peter B. Schmidt | 2018-12-18 |
| 10020766 | Current control of motor drives with output sinewave filter | Robert J. Breitzmann, Jingbo Liu, Thomas A. Nondahl, Jingya Dai, Peter B. Schmidt | 2018-07-10 |
| 9985565 | Sensorless motor drive vector control with feedback compensation for filter capacitor current | Jingya Dai, Jingbo Liu, Thomas A. Nondahl, Ehsan Al-Nabi | 2018-05-29 |
| 9800190 | Control of motor drives with output sinewave filter capacitor current compensation using sinewave filter transfer function | Jingbo Liu, Jingya Dai, Thomas A. Nondahl, Ehsan Al-Nabi, Peter B. Schmidt | 2017-10-24 |
| 9716460 | Method and apparatus for speed reversal control of motor drive | Thomas A. Nondahl, Jingbo Liu, Peter B. Schmidt, Jingya Dai, Ehsan Al-Nabi | 2017-07-25 |
| 9595896 | Methods and systems for sensorless closed loop motor speed and torque control | Thomas A. Nondahl, Jingya Dai, Thomas M. Cahill, Robert J. Breitzmann, Peter B. Schmidt +2 more | 2017-03-14 |
| 9490738 | Sensorless motor drive vector control | Thomas A. Nondahl, Jingbo Liu, Peter B. Schmidt, Ehsan Al-Nabi, Jingya Dai | 2016-11-08 |
| 9374028 | Transition scheme for position sensorless control of AC motor drives | Thomas A. Nondahl, Jingbo Liu, Peter B. Schmidt, Jingya Dai, Ehsan Al-Nabi | 2016-06-21 |
| 9318944 | Methods and apparatus for active front end filter capacitor degradation detection | Robert J. Breitzmann | 2016-04-19 |
| 9312779 | Position sensorless open loop control for motor drives with output filter and transformer | Jingbo Liu, Thomas A. Nondahl, Peter B. Schmidt | 2016-04-12 |
| 9294019 | Method and apparatus for controlling power converter with inverter output filter | Jingbo Liu, Thomas A. Nondahl, Peter B. Schmidt, Jingya Dai, Ehsan Al-Nabi | 2016-03-22 |
| 9287812 | Method and apparatus for stability control of open loop motor drive operation | Thomas A. Nondahl, Jingbo Liu, Peter B. Schmidt, Timothy M. Rowan | 2016-03-15 |
| 9240733 | High dynamic control apparatus for current source converter | Manish Pande, Jingya Dai, Sang Woo Nam, Ehshan Al-Nabi | 2016-01-19 |
| 9124209 | Method and apparatus for controlling power converter with inverter output filter | Jingbo Liu, Thomas A. Nondahl, Peter B. Schmidt | 2015-09-01 |
| 9054611 | Method and apparatus for stability control of open loop motor drive operation | Jingbo Liu, Thomas A. Nondahl, Peter B. Schmidt | 2015-06-09 |
| 9054621 | Position sensorless open loop control for motor drives with output filter and transformer | Jingbo Liu, Thomas A. Nondahl, Peter B. Schmidt | 2015-06-09 |
| 9041327 | Method and apparatus for overvoltage protection and reverse motor speed control for motor drive power loss events | Robert J. Breitzmann, John M. Kasunich | 2015-05-26 |
| 8902616 | Active front end power converter with diagnostic and failure prevention using peak detector with decay | John M. Kasunich, Robert J. Breitzmann, John James Jenks | 2014-12-02 |
| 8497655 | Method and apparatus for estimating rotor position in a sensorless synchronous motor | Jingbo Liu, Mark M. Harbaugh, Thomas A. Nondahl, Peter B. Schmidt | 2013-07-30 |
| 8330405 | Method and apparatus for increased current stability in a PWM drive | Mark M. Harbaugh, Thomas A. Nondahl, 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, Thomas A. Nondahl, Peter B. Schmidt | 2012-07-24 |
| 8159168 | Rotor position estimator for an electrical machine | Jingbo Liu, Thomas A. Nondahl, Peter B. Schmidt, Mark H. Harbaugh | 2012-04-17 |
| 8115437 | Torque limit of PM motors for field-weakening region operation | Mark M. Harbaugh | 2012-02-14 |
| 8009450 | Method and apparatus for phase current balance in active converter with unbalanced AC line voltage source | Robert J. Breitzmann, Mark M. Harbaugh | 2011-08-30 |
| 7944164 | Method and apparatus for identifying orientation of a stationary rotor in a sensor-less PMSM | Jingbo Liu, Thomas A. Nondahl, Peter B. Schmidt, Mark M. Harbaugh | 2011-05-17 |