Control device of three-terminal static DC converter
US11201550B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 17, 2018 |
| Grant date | Dec 14, 2021 |
| Priority date | — |
| Expiry date | Aug 17, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/5387
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control device includes a detector which detects a voltage of each of the DC terminals in a state where a DC voltage is applied to one of the DC terminals and said one of the DC terminals is maintained at a fixed voltage; a minimum voltage terminal selection circuit which selects a low-voltage DC terminal with a lowest voltage among the DC terminals to which the DC voltage has not been applied, based on a detection result of the detector; and an arithmetic circuit which generates, in a connected bridge circuit to which the DC voltage has been applied, an AC voltage of a size that is equal to a difference between the voltage of said one of the DC terminals to which the DC voltage has been applied and the voltage of the low-voltage DC terminal selected by the minimum voltage terminal selection circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.