Brushless motor and motor control device
US9692342B2 · kind B2 · utility
7Cited by
6References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2015 |
| Grant date | Jun 27, 2017 |
| Priority date | — |
| Expiry date | Oct 19, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P29/66
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A brushless motor for an electric power steering device that assists a steering operation includes: a stator having a plurality of winding sets for a plurality of systems respectively; and a rotator having a ferrite magnet. In the motor, a maximum current flowing without any demagnetization at high temperature is large. Hence, the torque of the motor is easily ensured at high temperature. In particular, when a failure occurs in one system, it is easy to ensure the torque of the normal system even at high temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.