COMPARISON OF CURRENT CONTROL TECHNIQUES FOR ACTIVE-FILTER APPLICATIONS

The paper presents the comparative evaluation of the performance of th ree state-of-the-art current control techniques for active filters. Th e linear rotating frame current controller, the fixed-frequency hyster esis controller, and the digital deadbeat controller are considered. T he main control innovations, determined by industrial applications, ar e presented, suitable criteria for the comparison are identified, and the differences in the performance of the three controllers in a typic al parallel active filter setup are investigated by simulations.