Rotating electrical machine, in particular for a motor vehicle starter
US8766501B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 21, 2008 |
| Grant date | Jul 1, 2014 |
| Priority date | — |
| Expiry date | Sep 13, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K23/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A direct-current rotating electrical machine, in particular for a motor vehicle starter. The machine includes a stator comprising a magnetized structure with permanent magnetization, extending along a circumference of the stator, a rotor, and a group of brushes arranged to allow the electrical supply of the rotor by switching the electrical current in sections of the rotor. The magnetized structure of the machine includes a plurality of main magnets and a plurality of auxiliary magnets, each arranged between two main magnets. The auxiliary magnets have a smaller angular extent and/or radial thickness than the main magnets. The magnetization vector in at least one of the main and auxiliary magnets varies continuously or in steps, at least locally taking a direction other than radial and orthoradial directions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.