APPARATUS FOR CONTROLLING CONVERTER HAVING SELF-ARC-EXTINCTION ELEMENTS

摘要

A converter control apparatus is configured by a converter magnetic deflection quantity calculation portion for detecting an electricity quantity necessary to calculate a magnetic deflection of an iron core in a converter, a system side direct current component correction controller for calculating a reference value of the direct current component of an output voltage of the converter on the basis of the detected electricity quantity, a converter output direct current component calculator for calculating an output voltage direct current component of the converter on the basis of an electricity quantity which is previously detected and necessary to obtain an output voltage direct current of the converter, a converter output voltage direct current correction controller for inducing an electric quantity for correcting the output voltage of the converter on the basis of a difference between the calculated output voltage direct current component and the reference value of the output voltage direct current component, thereby performing a protective countermeasure for an over-current caused by the magnetic deflection of the converter.