Three-Port Converters for Energy Conversion of PV-BES Integrated Systems - A Review

• Published in: IEEE access Vol. 11; p. 1
• Main Authors: Haque, Md Mejbaul, Wolfs, Peter, Alahakoon, Sanath, Islam, Md. Ariful, Nadarajah, Mithulan, Zare, Firuz, Farrok, Omar
• Format: Journal Article
• Language: English
• Published: Piscataway IEEE 01.01.2023; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Australia; Batteries; Battery energy storage; Bidirectional power flow; Costs; DC-AC power converters; Energy conversion; Energy storage; Interactive systems; isolated three-port converter; Load flow; modulation and control; non-isolated three-port converter; photovoltaic; Photovoltaic cells; Power converters; Power flow; Topology
• ISSN: 2169-3536; 2169-3536
• DOI: 10.1109/ACCESS.2023.3235924

The integration of battery energy storage (BES) with photovoltaic (PV) systems is becoming economically attractive for residential customers. The conventional approach for the interconnection of PV and battery systems requires at least two separate power converters that results in multistage power conversion for some power flows. The dc-dc three port converters (TPCs) are an alternative solution. These converters have many topological variants and possess different operating principles, topological benefits and limitations, and complexities. This paper concentrates on the topological study of TPCs for integrated PV and BESS applications in the power range from a few hundred watts to 350 kW. These are classified into three different categories based on their isolation features between the ports to establish a topological mapping of the reported TPCs. This provides a framework that systematically explores the full range of technical benefits and limitations of each TPC topology. This paper also examines the possible extension of the TPC topologies for grid-interactive PV-BES systems where bidirectional power flow capability is required between grid and BES systems. This extensive review will provide a useful framework and a strong point of reference for researchers for the selection of TPC topologies to meet the system requirements for PV and energy storage applications.