Issued Patents All Time
Showing 1–25 of 46 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12289071 | Induction machine with localized voltage unbalance compensation | Akihiro Imakiire | 2025-04-29 |
| 11863100 | Induction machine with localized voltage unbalance compensation | Akihiro Imakiire | 2024-01-02 |
| 11128246 | Driving system and method for a wound rotor synchronous generator | Yongsug Suh | 2021-09-21 |
| 10886801 | Vernier machine with shaped permanent magnet groups | Wenbo Liu | 2021-01-05 |
| 10784727 | Salient pole, wound field, synchronous machine with enhanced saliency | Wenbo Liu | 2020-09-22 |
| 10594179 | Alternating flux barrier air gap in a spoke type machine | Wenbo Liu | 2020-03-17 |
| 10003228 | Interior permanent magnet machine with axially varying permanent magnet size | Zhentao Stephen Du | 2018-06-19 |
| 9595858 | Double air gap, spoke type vernier machine | Byungtaek Kim | 2017-03-14 |
| 9379657 | Unity power factor induction machine | Prabhdeep S. Virk | 2016-06-28 |
| 9093942 | Assymetrical power inverter | Korwin Jay Anderson | 2015-07-28 |
| 8648562 | Single power supply dual converter open-winding machine drive | — | 2014-02-11 |
| 8450963 | Brushless synchronous machine utilizing third harmonic excitation | — | 2013-05-28 |
| 7608965 | Field controlled axial flux permanent magnet electrical machine | Metin Aydin, Surong Huang | 2009-10-27 |
| 7006366 | Boost rectifier with half-power rated semiconductor devices | Debiprasad Panda | 2006-02-28 |
| 6995992 | Dual bridge matrix converter | Lixiang Wei | 2006-02-07 |
| 6924574 | Dual-rotor, radial-flux, toroidally-wound, permanent-magnet machine | Ronghai Qu | 2005-08-02 |
| 6710495 | Multi-phase electric motor with third harmonic current injection | Renato O.C. Lyra | 2004-03-23 |
| 6570778 | Adjustable speed drive for single-phase induction motors | Miroslav Chomat | 2003-05-27 |
| 6242884 | Dual stator winding induction machine drive | Alfredo Rodolfo Munoz-Garcia | 2001-06-05 |
| 6208185 | High performance active gate drive for IGBTs | Vinod John, Bum Seok Suh | 2001-03-27 |
| 6097582 | Short circuit protection of IGBTs and other power switching devices | Vinod John, Bum Seok Suh | 2000-08-01 |
| 6031738 | DC bus voltage balancing and control in multilevel inverters | Gautam Sinha | 2000-02-29 |
| 6005788 | Hybrid topology for multilevel power conversion | Madhav Manjrekar | 1999-12-21 |
| 5949664 | Current stiff converters with resonant snubbers | Steffen Bernet, BRAZ DE JESUS CARDOSO FILHO | 1999-09-07 |
| 5870292 | Series resonant converter for switched reluctance motor drive | Sun Soon Park | 1999-02-09 |