Rotary electric machine and driving controller for rotary electric machine
US8847455B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 17, 2008 |
| Grant date | Sep 30, 2014 |
| Priority date | — |
| Expiry date | May 8, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K21/042
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A plurality of salient poles projecting toward a stator are arranged on a rotor core along the circumferential direction while being spaced apart from each other, and rotor windings are wound around these salient poles. The rotor windings are short-circuited through diodes, respectively; and when currents rectified by the diodes flow through the rotor windings, the salient poles are magnetized to produce a magnet where the magnetic pole is fixed. The width θ of each salient pole in the circumferential direction is smaller than a width corresponding to an electric angle of 180° of the rotor, and the rotor windings are wound around each salient pole by short-pitch winding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.