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  4. A DC hybrid circuit breaker with ultra fast contact opening and integrated gate-commutated thyristors (IGCT)
 
conference paper not in proceedings

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

Meyer, J.-M.
•
Rufer, A.  
2000
PCIM 2000 : International Conference on Power Electronics, Intelligent Motion and Power Quality

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.

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