This paper explores the application of the Variable Delay Frequency Modulation (VDFM) to an Interleaved Multicellular Parallel converter. VDFM is a modulation technique specially intended to reduce conducted EMI generated by parallel converters. This technique combines interleaving and frequency modulation in such a way that provides the best attenuation. On the other hand, Coupled Interleaved Multicelular Parallel Converters (CIMPC) needs a perfect current sharing among phases. In this paper we consider the effect of VDFM nonidealities on the EMI attenuation in order to consider the application of this technique to CIMPC.

Peer Reviewed