Rotary electrical machine and electric vehicle having the same
US7342342B2 · kind B2 · utility
13Cited by
30References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2006 |
| Grant date | Mar 11, 2008 |
| Priority date | — |
| Expiry date | Jan 18, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/64
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A rotary electrical machine includes a rotational shaft supported by a housing for rotation about an axis, a rotor coupled with the rotational shaft, and a stator fixed to the housing and oriented to face the rotor. A rotor position changing mechanism moves the rotor in an axial direction of the rotational shaft using a portion of a torque transmitted between the rotational shaft and the rotor as a driving force. The rotor position changing mechanism controls the strength of the magnetic field between the rotor and the stator by moving the rotor toward or away from the stator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.