Wound field synchronous machine with resonant field exciter
US9525376B2 · kind B2 · utility
3Cited by
32References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 13, 2014 |
| Grant date | Dec 20, 2016 |
| Priority date | — |
| Expiry date | Apr 19, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F38/18
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A brushless field exciter for wound synchronous machines that uses the resonance of the leakage inductance and a capacitor in a resonant field exciter to transfer energy to the rotating field winding. By resonating at frequencies greater than 50 kHz, this exciter reduces the overall size and weight of synchronous wound field motors at all power levels and extends the practical and economic power limits of synchronous wound field machines down to low integral and fractional HP applications, eliminating the permanent magnets now used in high efficiency motors and generators in that power range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.