A DC hybrid circuit breaker with ultra fast contact opening and integrated gate-commutated thyristors (IGCT)

Air-magnetic circuit breakers are widely used for short-circuit protection in DC electric railways or industrial plants. The well-known drawbacks of these breakers are mainly a slow breaking action, a short lifetime and high maintenance costs due to the destructive effects of the arc. The use of power semiconductors in a full-static circuit breaker configuration allows to eliminate these disadvantages but is limited by excessive conduction losses. The paper will present a so called hybrid breaker, drawing its name from the combination of a high-speed mechanical switch and a bi-directional IGCT assembly connected in parallel.

Presented at:
PCIM 2000 : International Conference on Power Electronics, Intelligent Motion and Power Quality, Nuernberg, Germany, 6-8 June 2000

Note: The status of this file is: EPFL only

 Record created 2005-11-15, last modified 2018-01-27

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