Multilevel power conversion device
US10110117B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 15, 2015 |
| Grant date | Oct 23, 2018 |
| Priority date | — |
| Expiry date | Oct 15, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/487
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power converter has: switching elements connected in parallel to each of primary-side filter capacitors, freewheel diodes connected in parallel to the switching elements, and snubber resistances connected in parallel to the switching elements. The controller causes stoppage of the power converter by turning off each of the switching elements. After stoppage of the power converter, the controller causes a discharge circuit to operate by turning on a thyristor, thereby discharging the primary-side filter capacitors. By discharging of the primary-side filter capacitors, a secondary-side filter capacitor is discharged via the freewheel diodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.