Permanent magnet dynamoelectric rotating machine and electric vehicle equipped with the same
US6133662A · kind A · utility
48Cited by
17References
14Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Sep 15, 1997 |
| Grant date | Oct 17, 2000 |
| Priority date | — |
| Expiry date | Sep 15, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/64
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A permanent magnet electric machine comprises a stator provided with windings and a rotor disposed with an air gap between the stator and the rotor. A plurality of permanent magnets are arranged along and fixed to the circumference of the rotor. The angular circumferential extent of a surface of each permanent magnet facing the stator is determined so that an induced voltage in the machine has a waveform that approximates a sinusoidal waveform, to suppress the peak of the induced voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.