Predictive current control of distribution static compensator for reactive power compensation

Abstract

The paper describes modelling and current control techniques of a distribution static compensator (D-STATCOM). Current control is based on the predictive and the space vector pulsewidth modulation (PWM) scheme, The predictive current-controlled PWM D-STATCOM can maintain its performance with reactive power compensation and a fixed switching frequency. By using the space vector control, low ripple and offset in the current and the voltage as well as fast dynamic responses are achieved using a small DC link capacitance.