High-speed disconnector using semiconductor technology

Details High-speed disconnector using semiconductor technology High-speed disconnector using semiconductor technology

1998-12-22

2000-12-26

Ballato, Josie

Electrical transmission or interconnection systems

Plural supply circuits or sources

Substitute or emergency source

307116, H01H 3700

Patent

active

061664561

ABSTRACT:
The invention specifies a disconnector for decoupling a load from a supplying AC voltage network. The disconnector comprises at least one disconnector stage having a series circuit comprising at least two reverse-conducting gate turn-off thyristors which are connected cathode to cathode. The gate turn-off thyristors are preferably hard driven. This allows the use of a single circuit capacitor in parallel with the series-connected gate turn-off thyristors. This embodiment has the advantage that, during disconnection, the current commutates early from the gate turn-off thyristors, which means that the disconnection capacity can be increased.

REFERENCES:
patent: 5517378 (1996-05-01), Asplund et al.
patent: 5602462 (1997-02-01), Stich et al.
GE SCR Manual Third Edition pp. 53, 105 and 106, Jan. 1980.

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