A Novel Multiport Bidirectional AC-DC Interlinking Converter with Galvanic Isolation for Hybrid Microgrid Applications

A novel single-stage multiport bidirectional AC-DC interlinking converter for hybrid microgrid applications is presented in this paper. The proposed converter reduces the number of power conversion stages, simplifies the hybrid AC-DC microgrid architecture and provides galvanic isolation while allowing its AC Port to operate with unity power factor and its switches to operate with soft-switching. The converter’s operation and control are discussed in this paper and its feasibility is confirmed with experimental results obtained from a prototype converter.