Electric power conversion systems – Current conversion – Including an a.c.-d.c.-a.c. converter
Patent
1993-08-03
1995-05-09
Young, Brian K.
Electric power conversion systems
Current conversion
Including an a.c.-d.c.-a.c. converter
363 37, 363 39, H02J 336
Patent
active
054146127
ABSTRACT:
An HVDC transmission has two converters (SR1, SR2). Each converter is connected between an alternating-voltage network (N1, N2) and a d.c. link (L1, L2) common to the converters. At least one converter is connected to its alternating-voltage network without the use of any full transformer, for example directly, or via an inductor or an autotransformer, or via series capacitors. The transmission has a mutual inductor (IB) which is arranged on the d.c. side of the converter and which has two windings (IB1, IB2) which are each connected to a respective one of the d.c. supply lines of the converter and are magnetically coupled to each other, the inductor being designed and connected so as to exhibit a high impedance to ground mode currents.
REFERENCES:
patent: 4648018 (1987-03-01), Neupauer
patent: 4649466 (1987-03-01), Rogowsky
patent: 4894762 (1990-01-01), Steinshorn
Astrom Urban
Bergdahl Bernt
Bjorklund Per-Erik
Vithayathil John J.
Asea Brown Boveri AB
Han Y. Jessica
Young Brian K.
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