Control device for electric motor drive device
US8497645B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 22, 2010 |
| Grant date | Jul 30, 2013 |
| Priority date | — |
| Expiry date | Feb 7, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/72
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control device that controls an electric motor drive device is configured with a current control portion that determines a voltage command value, a voltage control portion that generates a switching control signal, and a current control period determining portion. The control device is also configured with a voltage control period determining portion that determines a voltage control period, and a control period setting portion. In the control device, the current control period determining portion determines, according to a target torque, the current control period as a value that increases continuously or stepwise as the target torque decreases. Furthermore, the voltage control period determining portion determines, according to a rotating speed, the voltage control period as a value that increases continuously or stepwise as the rotating speed decreases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.