Thomas A. Lipo
51Patents
27h-index
41Co-inventors
88Inventor score
Filing activity: Jan 2, 1975 → Aug 18, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6031738A | DC bus voltage balancing and control in multilevel inverters | Electricity | 169 | Expired |
| US5334923A | Motor torque control method and apparatus | Electricity | 130 | Expired |
| US6005788A | Hybrid topology for multilevel power conversion | Emerging Cross-Sectional Technologies | 126 | Expired |
| US4088934A | Means for stabilizing an a-c electric motor drive system | Emerging Cross-Sectional Technologies | 105 | Expired |
| US5272429A | Air gap flux measurement using stator third harmonic voltage and uses | Electricity | 83 | Expired |
| US6924574B2 | Dual-rotor, radial-flux, toroidally-wound, permanent-magnet machine | Electricity | 73 | Expired |
| US5304882A | Variable reluctance motors with permanent magnet excitation | Electricity | 73 | Expired |
| US5852558A | Method and apparatus for reducing common mode voltage in multi-phase power converters | Electricity | 72 | Expired |
| US5672925A | Doubly salient variable reluctance machine with stationary permanent magnets or auxiliary field windings | Electricity | 69 | Expired |
| US6097582A | Short circuit protection of IGBTs and other power switching devices | Electricity | 67 | Expired |
| US6570778B2 | Adjustable speed drive for single-phase induction motors | Electricity | 57 | Expired |
| US6710495B2 | Multi-phase electric motor with third harmonic current injection | Electricity | 57 | Expired |
| US5949664A | Current stiff converters with resonant snubbers | Emerging Cross-Sectional Technologies | 56 | Expired |
| US5825113A | Doubly salient permanent magnet machine with field weakening (or boosting) capability | Electricity | 53 | Expired |
| US4724373A | Method and apparatus for flux and torque sensing in electrical machines | Electricity | 48 | Expired |
| US6242884A | Dual stator winding induction machine drive | Electricity | 46 | Expired |
| US4942511A | Static power conversion apparatus using a high frequency series resonant DC link | Electricity | 44 | Expired |
| US5010267A | Variable speed machine with high power density | Electricity | 44 | Expired |
| US5661390A | Inverter-fed motor drive with EMI suppression | Electricity | 42 | Expired |
| US6208185A | High performance active gate drive for IGBTs | Electricity | 41 | Expired |
| US5510689A | Air gap flux measurement using stator third harmonic voltage | Electricity | 36 | Expired |
| US4137489A | Feedback control for reduction of cogging torque in controlled current AC motor drives | Electricity | 35 | Expired |
| US5825112A | Doubly salient motor with stationary permanent magnets | Electricity | 33 | Expired |
| US6995992B2 | Dual bridge matrix converter | Electricity | 33 | Expired |
| US5448149A | Indirect rotor position sensor for a sinusoidal synchronous reluctance machine | Electricity | 33 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.