Electric power conversion systems – Current conversion – Including automatic or integral protection means
Patent
1997-09-18
1999-02-16
Sterrett, Jeffrey
Electric power conversion systems
Current conversion
Including automatic or integral protection means
363 53, 363 56, 363127, 363132, H02H 712
Patent
active
058727078
ABSTRACT:
A plant for transmitting electric power having an alternating voltage network with at least one phase and at least one VSC converter is provided. The converter has at least one phase leg with two current valves connected in series. Each phase leg is connected at a point between the two current valves to a respective phase of the alternating voltage network. The plant also comprises at least one additional phase leg in the converter more than the number of phases of the alternating voltage network and a means for disconnecting a phase leg from its respective phase and for connecting the additional phase leg at a point between its two current valves to the disconnected phase.
REFERENCES:
patent: 4507724 (1985-03-01), Glennon
patent: 4941079 (1990-07-01), Ooi
patent: 5051683 (1991-09-01), Hirose et al.
patent: 5280421 (1994-01-01), De Doncker et al.
patent: 5491622 (1996-02-01), Carosa
patent: 5535113 (1996-07-01), Konishi
patent: 5717584 (1998-02-01), Rajashekasa et al.
ISBN 9-471-47580-7, vol. 1, 1971, Edward Wilson Kimbark, Direct Current Transmission (see chapter 1-3, 2nd paragraph).
Asea Brown Boveri AB
Sterrett Jeffrey
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