DSP-based indirect-current-controlled STATCOM. I. Evaluation of current control techniques

DSP-based implementation of a 3-plinsc static conipcnsator (STATCOM) is presented. The closed-loop control scheme of thc compcnsalor is bascd on fmzy logic. Tlic hardware module of an IGBT-based PWM current-controlled voltage-sou~~invei-te(Pr WM-CC-VSI) is taken as a SʹIʹATCOM. Two different types of currcnl coiilrol tcchniqucs, namcly, direct and indii-ect current control are designed for the compensator. The experimetital tests on the compznsator are carried out with both techniques. The STATCOM is tested tis an active filter (Ab> to select the most promising technique for the current control.