A Coordinated Control Method to Suppress Continuous Commutation Failure
A technology of coordinated control and commutation failure, applied in the direction of irreversible DC power input conversion to AC power output, output power conversion device, AC power input conversion to DC power output, etc., can solve valve group blocking, multi-circuit Simultaneous or successive DC commutation failures, DC system derating operation, etc.
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[0066] figure 1 It is a general model diagram of an inverter station coordinated control method according to an embodiment of the present invention. The coordinated control method includes: constant DC voltage control, constant DC current control, fixed turn-off angle control, low-voltage current-limiting control, and additional turn-off angle adjustment dynamic control and additional DC current control; the constant DC voltage control, constant DC current control and constant turn-off angle control act together on the dynamic change of the trigger angle of the inverter station in advance to control the stable operation of the entire inverter station; the constant DC voltage control and low voltage current limit control are connected in turn. The initial control configuration of the inverter station includes constant DC voltage control, constant DC current control, constant turn-off angle control and low-voltage current-limiting control. Based on the initial control link, the...
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