Issued Patents All Time
Showing 26–38 of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7911176 | Systems and methods involving permanent magnet electric machine rotor position determination | Allen Michael Ritter, Luis Jose Garces, Xianghui Huang | 2011-03-22 |
| 7880419 | MVDC power transmission system for sub-sea loads | Christof Martin Sihler, Robert Roesner | 2011-02-01 |
| 7851943 | Direct current power transmission and distribution system | Christof Martin Sihler, Richard S. Zhang | 2010-12-14 |
| 7787270 | DC-DC and DC-AC power conversion system | Ravisekhar NadimpalliRaju, Richard S. Zhang, Allen Michael Ritter, Ljubisa Dragoljub Stevanovic | 2010-08-31 |
| 7679941 | Power conversion system with galvanically isolated high frequency link | Ravisekhar Nadimpal Raju, Richard S. Zhang, Allen Michael Ritter, Ljubisa Dragoljub Stevanovic | 2010-03-16 |
| 7633770 | Collection and transmission system | Christof Martin Sihler, Richard S. Zhang | 2009-12-15 |
| 7633775 | Power conversion system and method | Allen Michael Ritter, Kunlun Chen, John D. D'Atre | 2009-12-15 |
| 7532490 | Converter topology and methods for interfacing an electrical machine to electrical power grid | Haiqing Weng, Richard S. Zhang, Ravisekhar Nadimpalli Raju, Allen Ritter | 2009-05-12 |
| 7414331 | Power converter system and method | — | 2008-08-19 |
| 7359223 | Power converter system and method | Kunlun Chen, Haiqing Weng, Ravisekhar Nadimpalli Raju | 2008-04-15 |
| 7327134 | Method and system for transformer control | Haiqing Weng, Kunlun Chen, Allen Michael Ritter | 2008-02-05 |
| 7324360 | Power converter methods and apparatus for variable speed high power machines | Allen Ritter, Richard S. Zhang, Luis Jose Garces, Ravisekhar Nadimpalli Raju, Mark Eugene Shepard | 2008-01-29 |
| 7203078 | Dual mode rectifier, system and method | Kunlun Chen | 2007-04-10 |