Multigroup-multiphase rotating-electric-machine driving apparatus
US10903772B2 · kind B2 · utility
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12Claims
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Key dates
| Filing date | May 17, 2017 |
| Grant date | Jan 26, 2021 |
| Priority date | — |
| Expiry date | May 17, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P29/0241
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
When the connection between a DC power source and a multigroup-multiphase electric-power conversion apparatus is cut off, a control apparatus controls switching devices so that the respective states of the two or more groups of electric-power conversion apparatuses included in the multigroup-multiphase electric-power conversion apparatus are each switched stepwise from all-phase short-circuiting state to an all-phase cutoff state at different timings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.