Electric power conversion systems – Current conversion – Including an a.c.-d.c.-a.c. converter
Patent
1997-10-15
1999-02-09
Nguyen, Matthew
Electric power conversion systems
Current conversion
Including an a.c.-d.c.-a.c. converter
363 35, H02M 545
Patent
active
058702938
ABSTRACT:
A system for transmitting electric power between a direct voltage network and alternating voltage networks through VSC-converters. A first station which transmits electric power is in voltage regulating mode. Switching members at a second station are adapted to be alternatingly switched in and out upon occurrence of a sudden change of power so as to alternatingly connect one of the poles of the direct voltage network through an associated resistance to ground. A ground current generated therethrough is detected by a ground current measuring member of the first station, which is thereby informed about the unbalance. The first station then takes corrective measures to reduce or eliminate the unbalance.
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Palsson Rolf
Svensson Kjell
Asea Brown Boveri AB
Nguyen Matthew
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