Power converter protective apparatus using mechanical and...

Details Power converter protective apparatus using mechanical and... Power converter protective apparatus using mechanical and...

H - Electricity

02

H

H02H 7/10 (2006.01) H02J 3/18 (2006.01) H02M 1/00 (2006.01)

Patent

CA 2178862

A power converter protective apparatus for protecting an AC-DC converter against an excess fault current by preventing the fault current of a power system from flowing into the AC-DC converter. The protective apparatus comprises a series transformer, whose primary winding is connected in series with a power system and whose secondary winding is connected to a voltage-type AC- DC converter, first current bypass means of a normally open-type connected in parallel with the primary winding, a current transformer for detecting a fault current in the power system, and a control unit for outputting a bypass control signal to the first current bypass means when the current transformer detects the fault current, whereby when the fault in the power system is detected, a fault current flowing through the primary winding is bypassed by the first current bypass means.

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