Control apparatus of electric motor
US8022650B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 4, 2008 |
| Grant date | Sep 20, 2011 |
| Priority date | — |
| Expiry date | Dec 28, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/72
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An apparatus to control an electric motor to drive an electric-powered vehicle includes an accelerator position detector, a current controller to provide current to the electric motor through an inverter, a semiconductor device of the current controller configured to operate the inverter in response to a detected accelerator position, and a torque compensator to supply the electric motor with a modified current of the semiconductor device, wherein the torque compensator is configured to provide the modified current to the electric motor at a predetermined interval of time in response to a temperature increase in the semiconductor device when the detected accelerator position exceeds a predetermined threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.