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Vsc-converter

  • US 20040052023A1
  • Filed: 09/29/2003
  • Published: 03/18/2004
  • Est. Priority Date: 12/20/2000
  • Status: Abandoned Application
First Claim
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1. A VSC-converter for converting direct voltage into alternating voltage and vice versa, comprising several current valves (1), each current valve comprising a semiconductor element (2) of turn-off type and a first rectifying member (3) connected in anti-parallel therewith, characterized in that at least one of the current valves is provided with a circuit for over voltage protection connected in parallel with the current valve (1), which circuit comprises a series connection of a surge arrester (5) and a second rectifying member (6), the second rectifying member (6) being connected in anti-parallel with the first rectifying member (3) included in said at least one current valve.

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