BYPASS OPERATION BY CYCLIC FIRING OF THE BRIDGE THYRISTORS.

Z. Zabar, G. Bronner

Research output: Contribution to journalArticlepeer-review

Abstract

By-passing of a thyristor bridge is used in large converter systems such as in hvdc transmission lines for fault conditions. In normal voltage-control operation, an increase in the total power factor of the whole convertor system can be achieved by relieving a few bridges from current by using external bypass valves. However, a fully rated external bypass valve is relatively expensive because it has to carry continuously the full direct current. A novel way of continuous operation of the bridge thyristors in a cyclic firing method is described. This method allows the designer to eliminate the external bypass valve and still get the bypass mode of operation.

Original languageEnglish (US)
Pages (from-to)833-836
Number of pages4
JournalProceedings of the Institution of Electrical Engineers
Volume126
Issue number9
DOIs
StatePublished - 1979

ASJC Scopus subject areas

  • Engineering(all)

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