Control device for electric motor drive device
US8390223B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 12, 2010 |
| Grant date | Mar 5, 2013 |
| Priority date | — |
| Expiry date | May 14, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P21/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control device that controls an electric motor drive device. The control device is configured with a first voltage control section that derives a modulation rate representing a ratio of an effective value of the voltage command values to the DC voltage and a voltage command phase. A second voltage control section generates a control signal for controlling the DC/AC conversion section on the basis of the modulation rate, the voltage command phase, and a magnetic pole position representing a rotational angle of a rotator of the AC electric motor. A computation cycle of the first voltage control section is set to be longer than a computation cycle of the second voltage control section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.