Permanent magnet temperature estimation
US7979171B2 · kind B2 · utility
8Cited by
3References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 21, 2010 |
| Grant date | Jul 12, 2011 |
| Priority date | — |
| Expiry date | Sep 21, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/64
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of controlling a vehicle including a permanent magnet (PM) synchronous motor is provided. The motor is controlled based on direct-axis (d-axis) and quadrature-axis (q-axis) current commands. The method includes estimating permanent magnet flux linkage based on q-axis voltage and electrical angular speed, and estimating permanent magnet temperature based on permanent magnet flux linkage and the temperature coefficient of the permanent magnet. The vehicle is controlled based on the estimated permanent magnet temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.