THYRISTOR STARTUP DEVICE AND METHOD FOR CONTROLLING SAME

摘要

A thyristor starting device (100) includes: a converter (1) which converts AC power supplied from an AC power source (e1) into DC power; a DC reactor (3) which smooths a DC current; an inverter (2) which converts the DC power provided from the converter (1) through the DC reactor (3) into AC power, and supplies the AC power to a synchronous machine (4); a gate pulse generation circuit (40) which generates a gate pulse to be provided to thyristors of the converter (1) and the inverter (2); a control unit (20) which sets a phase control angle of the gate pulse to be provided to the thyristors of the converter (1), by controlling a current of the converter (1) such that the DC current flowing into the DC reactor (3) matches a current command value; and an abnormality detection unit (50) which compares a detection value of the DC current with the current command value, and determines an abnormality in the gate pulse based on a comparison result.