Combined application of interleaving and modulation techniques in multiconverter topology

This paper presents a theoretical study about the combined application of interleaving and switching frequency modulation (SFM) in parallel multiconverter topology. We study the spectrum of the equivalent noise generation pattern that represents the aggregate effect of the switching of the four converters we have considered. Special attention has been paid to the amplitude reduction and harmonic cancellation by means of the application of two techniques: constant delay switching frequency modulation (CDSFM) and switching frequency modulation with variable delay of pulse position (SFMVPP).