Issued Patents All Time
Showing 1–25 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11368109 | Power conversion system with PWM carrier transition smoothing and autotuning | Jacob Lamb, Brian J. Seibel | 2022-06-21 |
| 11258388 | Systems and methods for performing motor control operations agnostic of speed data | Lei Jin, Zhendong Zhang, Haihui Lu | 2022-02-22 |
| 10756659 | Counter electromotive force estimation | Bing Li, Zhenyu Ye, Zhendong Zhang | 2020-08-25 |
| 10727772 | Predicting an induction machine load pattern | Lei Jin, Robert J. Miklosovic, Zhendong Zhang, Haihui Lu | 2020-07-28 |
| 10601343 | Power conversion system with PWM carrier transition smoothing and autotuning | Jacob Lamb, Brian J. Seibel | 2020-03-24 |
| 10541626 | Power conversion system with PWM carrier emulation | Jacob Lamb, Brian J. Seibel, Lixiang Wei | 2020-01-21 |
| 10389292 | DC bus regulation using rectifier and inverter | Jacob Lamb, Ahmed S. Mohamed Sayed Ahmed, Brian J. Seibel | 2019-08-20 |
| 9774284 | Rotor position estimation apparatus and methods | Jingbo Liu, Thomas A. Nondahl, Peter B. Schmidt, Takayoshi Matsuo | 2017-09-26 |
| 9584043 | Inverter phase current reconstruction apparatus and methods | Zhendong Zhang, Takayoshi Matsuo, David Leggate, Russel J. Kerkman, Bing Li | 2017-02-28 |
| 9318976 | Adjustable PWM method to increase low speed starting torque and inverter voltage measurement accuracy | Lixiang Wei, Jeffrey D. McGuire | 2016-04-19 |
| 9287812 | Method and apparatus for stability control of open loop motor drive operation | Thomas A. Nondahl, Jingbo Liu, Peter B. Schmidt, Semyon Royak | 2016-03-15 |
| 9036382 | Method and apparatus for ripple and phase loss detection | Bing Li, David Leggate | 2015-05-19 |
| 7268514 | Motor control for stopping a load and detecting mechanical brake slippage | Robert J. DeLange, Roman W. Lichon, Glenn E. Frazier, Lynn J. Cooksey | 2007-09-11 |
| 7135833 | Motor control for flux-reduced braking | Robert J. DeLange | 2006-11-14 |
| 6229278 | Voltage and current limiting method and apparatus for a voltage/frequency drive | Luis Jose Garces | 2001-05-08 |
| 6014007 | Method and apparatus for starting an AC drive into a rotating motor | Brian J. Seibel, Russel J. Kerkman | 2000-01-11 |
| 5965995 | Transient inductance tuner for motor control | Brian J. Seibel, Russel J. Kerkman | 1999-10-12 |
| 5923144 | Frequency generator for a motor controller | Brian J. Seibel, Russel J. Kerkman, Kevin G. Stachowiak | 1999-07-13 |
| 5717305 | Method and apparatus for starting an electric motor | Brian J. Seibel, Russel J. Kerkman, Kevin G. Stachowiak | 1998-02-10 |
| 5689169 | Transient inductance identifier for motor control | Russel J. Kerkman, Jerry Thunes, David W. Schlegel | 1997-11-18 |
| 5479081 | AC motor controller with voltage margin adjustment | Brian J. Seibel, Russel J. Kerkman | 1995-12-26 |
| 5298847 | Counter EMF detector for use in electric motor controllers | Russel J. Kerkman, Brian J. Seibel | 1994-03-29 |
| 5140248 | Open loop motor control with both voltage and current regulation | Russel J. Kerkman | 1992-08-18 |
| 5032771 | Slip control based on sensing voltage fed to an induction motor | Russel J. Kerkman | 1991-07-16 |
| 5008608 | Controller for starting and stopping electric motors | Peter Unsworth, John C. Merrison | 1991-04-16 |