Electric motor drive device and control method therefor
US9985567B2 · kind B2 · utility
1Cited by
4References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2014 |
| Grant date | May 29, 2018 |
| Priority date | — |
| Expiry date | Dec 10, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P29/68
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to an electric motor drive device where a first inverter and a second inverter both supply power to one electric motor and to a control method for the electric motor drive device. A control unit for controlling an output of each inverter increases an output of the inverter of which a drive control system has first completed an initial diagnosis, ahead of the other inverter. If either inverter is about to overheat, the control unit decreases an output of the inverter that is about to overheat while keeping or increasing an output of the other inverter having the normal temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.