Bidirectional VSC converter with a resonant circuit
US6898095B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 2002 |
| Grant date | May 24, 2005 |
| Priority date | — |
| Expiry date | Apr 15, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/4826
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a VSC-converter for converting direct voltage into auxiliary voltage and vice versa, which comprises a series connection of at least two current valves (5, 6) arranged between two poles (7, 8), a positive and a negative, of a direct voltage side of the converter, each current valve comprising several series connected circuits (12), each of which circuits comprising a semiconductor component (13) of turn-off type and a rectifying component (14) connected in anti-parallel therewith, an alternating voltage phase line (16) being connected to a midpoint (15), denominated phase output, of the series connection of current valves (5, 6) between two of said current valves while dividing the series connection into two equal parts. Each of the series connected circuits (12) of the respective current valve comprises, in order to make possible a good voltage distribution between the semiconductor components (13) of turn-off type included in the respective current valve, a snubber capacitor (17) connected in parallel with the semiconductor component (13) of turn-off type included in the circuit. The converter (1) further comprises a resonance circuit (18) for recharging …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.