Review of Partially Isolated Three-Port Converters for PV-Battery Systems That Interface a PV, Bidirectional Battery, and Load

The demand for renewable energy has been steadily increasing since the start of this century. As a result, energy storage to overcome the intermittency of the renewable energy sources is also on the rise. Therefore, Multi-Port Converters (MPCs) have attracted much research in the last decade. In the literature, MPCs are categorized according to their isolation feature into three types including non-isolated, partially isolated, and fully-isolated MPC. This paper reviews and classifies several known topologies used to integrate a partially isolated MPC. Specifically, it focuses on Three-Port Converters (TPCs) which interface a Photovoltaic (PV) panel, a bidirectional battery, and a load port. In this paper, the partially isolated TPCs are divided into two main categories including full-bridge and half-bridge TPC. Furthermore, the different modulation strategies used in the literature are briefly illustrated. Finally, a comparison between the topologies and the modulation strategies will be presented.