Control device for electric motor driving apparatus
US8624534B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2010 |
| Grant date | Jan 7, 2014 |
| Priority date | — |
| Expiry date | Apr 9, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control device for an electric motor driving apparatus, configured with a switching control unit that performs rectangular wave control in which a plurality of switching elements provided in a direct current-alternating current conversion unit are ON/OFF-controlled to output rectangular wave-shaped voltages of a plurality of phases. System voltage varies during execution of the rectangular wave control, the switching control unit performs rectangular wave width adjustment control to set ON/OFF timings of the plurality of switching elements on the basis of a rate of change of the system voltage such that time-integrated values of the rectangular wave-shaped voltages of the respective phases within a control period set at a length corresponding to an integral multiple of a single electrical angle period are substantially identical among the respective phases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.