Conversion of fixed-parameters compensator in four-wire system with nonsinusoidal voltage into adaptive compensator

The paper shows how fixed-parameters reactive compensators in four-wire systems with a nonsinusoidal voltage can be converted into controlled-parameters compensators. Such compensators can serve as adaptive balancing compensators of reactive power of unbalanced loads. Thyristor switch inductors (TSIs) are used for such conversion. The fixed-parameters balancing reactive compensators are synthesized using the Currents' Physical Components (CPC) - based power theory. The adaptive compensator is composed of two sub-compensators, one in the Δstructure and the other in the Y structure. The method is illustrated with a numerical example and results of computer modeling of the load with a fixed-parameters and with an adaptive compensator.