Electric motor temperature compensation
US9724997B2 · kind B2 · utility
1Cited by
6References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 7, 2012 |
| Grant date | Aug 8, 2017 |
| Priority date | — |
| Expiry date | Oct 14, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/72
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A vehicle includes one or more inverter-fed electric machines such as permanent magnet synchronous motors. In response to a torque request, a controller issues commands to an inverter calculated to cause the motor to produce the requested torque at the current temperature. A method adjusts the direct component of the winding current such that the requested torque is delivered efficiently. For a given rotor speed, bus voltage, and torque, the direct component increases as the temperature increases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.