Control device
US8836255B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 2011 |
| Grant date | Sep 16, 2014 |
| Priority date | — |
| Expiry date | Jan 25, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P23/14
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control device that controls an electric motor drive device including a DC/AC conversion section that converts a DC voltage into an AC voltage using a detected angle detected by a resolver provided in an AC electric motor to supply the resulting AC voltage to the AC electric motor. The control device includes a correction information acquisition section that acquires first correction information on the basis of the rotational speed, and that acquires the second correction information on the basis of the modulation rate at the angle acquisition time point in the case where the rotational speed at the angle acquisition time point is less than the rotational speed threshold. A detected angle correction section corrects the detected angle on the basis of the correction information acquired by the correction information acquisition section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.