A 5-kV 1.5-MW variable DC source

摘要

A 5 kV, 300 A, variable DC source is described. This source will be used by Hydro-Quebec to determine the short-circuit impedances of HVD (high-voltage direct current) links. The converter is composed of four eight-thyristor bridges connected in series in a 24-pulse arrangement. The triggering pulses are transmitted to the thyristors by fiber-optic cables.