Study of control algorithms for a voltage bus conditioner

A voltage bus conditioner (VBC) is used to mitigate the voltage transients on a common power distribution bus. The VBC described here utilises inductive storage and unlike its counter part with capacitive storage, it can employ the entire stored energy towards transients´ mitigation. The performances of adaptive duty ratio control, sliding mode control and constant frequency hysteresis control have been compared. The simulation results (with the package SABER) indicate that the hysteresis control results in the shortest and the smallest bus voltage excursions.