Issued Patents All Time
Showing 26–46 of 46 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5852558 | Method and apparatus for reducing common mode voltage in multi-phase power converters | Alexander L. Julian, Deepakraj M. Divan | 1998-12-22 |
| 5841644 | Passively clamped quasi-resonant DC link converters | Shaotang Chen | 1998-11-24 |
| 5825113 | Doubly salient permanent magnet machine with field weakening (or boosting) capability | Yue Li | 1998-10-20 |
| 5825112 | Doubly salient motor with stationary permanent magnets | Yuefeng Liao, Feng Liang | 1998-10-20 |
| 5672925 | Doubly salient variable reluctance machine with stationary permanent magnets or auxiliary field windings | Yuefeng Liao, Feng Liang | 1997-09-30 |
| 5661390 | Inverter-fed motor drive with EMI suppression | Erkuan Zhong | 1997-08-26 |
| 5650707 | Inverter-controlled induction machine with an extended speed range | Mohamed Osama | 1997-07-22 |
| 5646498 | Conducted emission radiation suppression in inverter drives | Er-Kuan Zhong | 1997-07-08 |
| 5510689 | Air gap flux measurement using stator third harmonic voltage | Julio C. Moreira | 1996-04-23 |
| 5459385 | Variable reluctance drive system | Feng Liang | 1995-10-17 |
| 5455473 | Field weakening for a doubly salient motor with stator permanent magnets | Yuefeng Liao, Feng Liang | 1995-10-03 |
| 5448149 | Indirect rotor position sensor for a sinusoidal synchronous reluctance machine | Mehrdad Ehsani, Mohammed S. Arefeen | 1995-09-05 |
| 5376851 | Variable reluctance motor with full and short pitch windings | Feng Liang | 1994-12-27 |
| 5334923 | Motor torque control method and apparatus | Robert D. Lorenz, Kam T. Hung, Julio C. Moreira | 1994-08-02 |
| 5304882 | Variable reluctance motors with permanent magnet excitation | Yuefeng Liao | 1994-04-19 |
| 5272429 | Air gap flux measurement using stator third harmonic voltage and uses | Julio C. Moreira | 1993-12-21 |
| 5010267 | Variable speed machine with high power density | Longya Xu | 1991-04-23 |
| 4942511 | Static power conversion apparatus using a high frequency series resonant DC link | Yoshihiro Murai | 1990-07-17 |
| 4724373 | Method and apparatus for flux and torque sensing in electrical machines | — | 1988-02-09 |
| 4573003 | AC Machine optimized for converter operation | — | 1986-02-25 |
| 4455522 | Current source inverter bed induction motor drive | — | 1984-06-19 |