Fast Step Control for Active Capacitor Converter with Pulse Loads

Abstract

To balance the instantaneous power difference in the pulse load power supply (PLPS), an active capacitor converter (ACC) is adopted to compensate the pulse current. In this paper, to improve the tracking ability of the ACC, a fast inductor current step control scheme is used with digital controller, and its transient operation process is analyzed. Finally, a prototype with the output peak power of 157W, the pulse frequency of 50–500 Hz and pulse duty cycle of 0.1-0.3 is fabricated and tested to verify the validity of the proposed PPS and control schemes.