Method and a device for communication in a high voltage converte

Details Method and a device for communication in a high voltage converte Method and a device for communication in a high voltage converte

1998-03-23

1999-10-19

Riley, Shawn

Electric power conversion systems

Current conversion

Including an a.c.-d.c.-a.c. converter

340660, H02J 336

Patent

active

059699566

ABSTRACT:
An apparatus and method for communication between low potential level and a valve of a high voltage converter station located on high voltage potential level is provided. The apparatus comprises means adapted to send serial messages on light conductors between a valve control unit and a first control unit for controlling semiconductor components of the valve of turn-on type on high voltage potential level in periods of time when the respective light conductor is free from signals associated with a change in the conducting state of the semiconductor component, such as turn-on and/or indications signals.

REFERENCES:
patent: 4377835 (1983-03-01), Asplund et al.
patent: 4633380 (1986-12-01), Kashiwazaki
patent: 5027434 (1991-06-01), Brahms et al.
patent: 5521526 (1996-05-01), Nyberg et al.
patent: 5672917 (1997-09-01), Nakano
patent: 5684465 (1997-11-01), Andersson et al.
Patent Abstracts of Japan, vol. 7, No. 136 (E-181), abstract of JP 58-51749 A (Kansai Denriyoku K.K.), Mar. 26, 1983.

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