Bypass-pair control apparatus for thyristor bridge.

摘要

In a control apparatus for controlling the firing timing of each of thyristor valves constituting a thyristor bridge by use of at least two series of control systems, a bypass-pair control circuit for thyristor bridge includes a circuit (8A, 8B) for detecting the conduction states of the thyristor valves (2U-2Z), and a circuit (9A, 9B) for determining a conductive valve at the time of bypass-pair operation in accordance with a result of detection of the conduction state of each thyristor valve. <IMAGE>