Steady-State Analysis of a ZVS Bidirectional Isolated Three-Phase DC–DC Converter Using Dual Phase-Shift Control With Variable Duty Cycle

PROJECT TITLE :

Steady-State Analysis of a ZVS Bidirectional Isolated Three-Phase DC–DC Converter Using Dual Phase-Shift Control With Variable Duty Cycle

ABSTRACT:

This study presents the steady-state analysis and experimental results on a soft-switching bidirectional isolated 3-section dc–dc converter using DPS control with variable duty cycle. The topology uses 3 single H-bridges in the first side and a 3-part inverter in the secondary aspect. High-frequency isolation is ensured by using 3 single-section transformers connected in open delta-wye configuration. The variation of each part-shift angles between the H-bridge legs and/or primary and secondary sides permits controlling the ability flow, whereas reduced reactive power flow is doable. The variable duty cycle is employed to make sure a constant voltage bus and/or zero voltage switching operation. An in depth analysis is presented considering a model based mostly on the elemental elements for the voltages and currents within the transformer. A comparison between the elemental and the particular models is administered to validate the proposed model. Experimental results on a ninety six V/350–four hundred V, three.five kW prototype are presented and mentioned to validate the proposed approach.

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