Analysis of Unidirectional Isolated Y-Y Connection Three-Phase DC-DC Converter

This paper presents analysis of unidirectional isolated Y-Y connection three-phase DC-DC converter. The waveforms of the proposed converter is similar to conventional Y-Y connection three-phase dual-active-bridge (DAB) DC-DC converter. Therefore, by deriving the phase current and power flow of each DC-DC converter, the waveforms, power factor and efficiency of the proposed converter will be compared to the DAB to clarify the effectiveness of the proposed converter. Finally, the characteristics of the converter is verified by simulation and experiment.