INTER-PORT POWER SHARING OF A SPV-BATTERY INTEGRATED THREE PORT SOFT-SWITCHED DC-DC CONVERTER

Authors

  • Sarbojit Mukherjee Department of Electrical Engineering, RCC Institute of Information Technology, Kolkata, West-Bengal, 700015, India
  • Shib Sankar Saha Department of Electrical Engineering, Kalyani Govt. Engineering College, Kalyani, West- Bengal, 741235, India
  • Sumana Chowdhuri Department of Applied Physics, University of Calcutta, Kolkata, West-Bengal, 700009, India

DOI:

https://doi.org/10.11113/aej.v16.25287

Keywords:

Inter-port Power sharing, MPPT, PSFB Converter, Soft-switching, Three-port Converter

Abstract

A soft-switched isolated three-port converter (TPC), integrating solar photovoltaic (SPV) source, battery storage and load is proposed in this work. The load port is isolated from the SPV source and battery port by a high frequency transformer. The proposed TPC is built on the modified structure of phase-shift full bridge (PSFB) converter. All switches of the converter operate under soft-switched conditions and the diodes recover softly. Brief operating principle, small signal modelling and controller design for the inter-port power sharing, load voltage regulation, maximum power point tracking (MPPT) of SPV source, and charge/discharge control of the battery storage are elaborated in this work. Finally, a hardware prototype of rated 144W, 48V, 100kHz has been developed in the laboratory for real-time performance verification. In various operating scenarios, the soft-switching behavior of the active switches, dynamic stability of the controller and the regulated load port power transfer have been established with 95.2% efficiency.

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Published

2026-05-31

Issue

Vol. 16 No. 2: June 2026

Section

Articles