Zero Voltage Switching Criteria of Triple Active Bridge Converter

Triple active bridge (TAB) as an isolated multiport converter is a promising integrated energy system for smart grids or electric vehicles. This article aims to derive and analyze zero voltage switching (ZVS) regions of TAB, in which both losses are reduced, electromagnetic interference issues mitigated. In the proposed closed-form solution ZVS criteria, parameters such parasitic capacitance switches, leakage inductance transformer, frequency, port voltage, phase-shift inside between full-bridges all taken into account. The analysis shows how five degrees freedom can be used maintain operation various operating points. derived criteria experimentally verified using laboratory prototype. analytical powerful tool study optimize TAB converters.