A systematic design method and verification for a zero-ripple interface for PV/Battery-to-grid applications

Abstract

A systematic method of designing a zero-ripple Ćuk converter for PV/Battery-to-grid applications is presented in this paper. The integrated magnetic core design uses an intuitive flux-reluctance model to arrive at the Area Product for this kind of structure. Unlike the earlier designs for this converter, it provides a completely analytical approach to design this converter for a range of specifications. The target application is grid interface of PV or battery. The validity of the proposed method is confirmed using finite element analyses (both 2-D and 3-D), circuit simulations in pspice as well as preliminary experimental validation.