고역률 제어를 위한 양방향 듀얼 액티브 하프 브릿지 컨버터
- 고역률 제어를 위한 양방향 듀얼 액티브 하프 브릿지 컨버터
- NGO, TUAN
- Date Issued
- There is a growing concerning an electric vehicle (EV), hybrid-electric ve-hicle (HEV) and a fuel-cell vehicle due to air pollution and exhaustion of fossilfuels. Traditionally, a front-end rectifier is designed to charge the batterypackage from the grid line. It is critical for battery charger to operate at unitypower factor while the efficiency of system is high and the size of converter issmall.In this work, a new bidirectional topology for battery charger based on half-bridge converter has been introduced for low-power applications . And theimbalance voltage phenomenon on capacitors of half-bridge rectifier is elimi-nated completely.The proposed converter can obtain nearly unity power factor with large rangeof zero-switching switch. The efficiency of whole system is expected to behigher compared to same full-bridge topology due to less conduction andswitching losses on power devices. The cost-effectiveness and small size aremain advantages of this propounded converter. Simulation and experimentalresults supporting the proposed scheme are presented.
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