Power conversion device with selective voltage control
US11070143B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Jul 31, 2019 |
| Grant date | Jul 20, 2021 |
| Priority date | — |
| Expiry date | Jul 31, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/53876
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power conversion device includes a power conversion circuitry configured to convert DC power into AC power by switching on/off a plurality of switching elements to switch each of a plurality of phase voltages to a voltage level selected from one of three levels including a first voltage, a second voltage higher than the first voltage, and a third voltage higher than the second voltage. A control circuitry is configured to control the plurality of switching elements so as to convert DC power into AC power without producing a combination of the first voltage and the third voltage between any two phases of the plurality of phase voltages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.