A Non-Isolated Three-Port DC-DC Converter

In this paper, a non-isolated three-port DC-DC converter suitable for fuel cells is proposed. By adjusting the duty cycle of the three switches, the power distribution between the fuel cell, the battery and the output load is realized. In this paper, the working modes, working principles and key parameters of the proposed three-port converter are analyzed. In order to verify the correctness and effectiveness of the theoretical analysis, a simulation prototype with a rated power of 200 W is built for verification. The simulation results are consistent with the theoretical analysis.