Rotation position detection device for a rotating electrical machine
US11545865B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2020 |
| Grant date | Jan 3, 2023 |
| Priority date | — |
| Expiry date | Feb 4, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/64
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A rotating electrical machine includes a stator, a rotor with a permanent magnet, a first number of one or more first coils, and a second number of one or more second coils. The second number is different from the first number. The one or more first coils are disposed on the stator. The one or more second coils are disposed on the rotor. The one or more first coils and the one or more second coils are disposed on the stator and the rotor, respectively, in such a manner as to closely oppose each other in a state where the rotor is at a predetermined rotation angle position. The one or more first coils are arranged to induce a voltage in response to a relative position with respect to the one or more second coils.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.