New Method to Filter HF Current Ripples Generated by Current-Fed DC/DC Converters

This paper presents a new method for filtering the HF current ripple generated by current-fed dc/dc converters. This method is based on the use of an active filter connected in parallel with the source, without any passive filter between the source and the power converter. The design of this new active filter and its associated controllers are fully explained in the paper. Experimental results validate the proposed filtering method. The structure of the proposed active filter is patented at the World Intellectual Property Organization under the number WO/2008/132318.