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ABSTRACT

In this paper, a non-isolated multi-input multi-output DC-DC converter for low power PV applications is proposed. The designed converter provides different voltage levels at the output with inter-source power sharing and bidirectional power flow capability. Steady state analysis of different operating modes based on the direction of power flow is discussed. Moreover, a double loop PI control structure is applied that provides a regulated output voltage and current at the output irrespective of input voltage variation. The mathematical analysis and circuit architecture is validated through simulation results that prove the feasibility of proposed topology. Design of a Multiport Bidirectional DC-DC Converter for Low Power PV Applications