Research and Design for Cascade SVG Control System

Abstract

This paper researchs alternating current decoupling control and DC capacitor voltage balance control for cascade SVG. The DC capacitor voltage balance control method has advantages of good stability and wide regulation range which uses the active voltage vectors of each module. The active voltage vector only change the active power of each module without affecting the reactive power. Experimental results show that the system can accurately compensate the reactive load, and has good performance in the steady state and dynamic adjustment.