一種適用于電動汽車的ZVS全橋變換器研究

摘要：研究了一種適用于電動汽車的集成寄生元件的ZVS變換器，利用變壓器的寄生電感和晶體管的輸出電容可實現變換器的ZVS功能，使變換器具備經濟、緊湊的特點。通過分析電路的工作原理、寄生量的計算和ZVS參數的優化，對變換器的設計進行系統研究，最后在一臺1kW樣機上進行實驗驗證。 敘詞：全橋 寄生電感 脈寬調制 零電壓轉換 Abstract：Study on a ZVS converter integrating spurious inductance for EV is presented in this paper. Using the spurious inductance of transformer and the output capacitance of transistor. The converter can achieve ZVS function, as well as obtaining the excellence of low cost and compact. The systemic research is implemented through analysis of the circuit operation, the methodology of spurious component and the optimization of ZVS parameters. The experimental results are given with a 250W prototype in the end of the paper. Keyword：Full-bridge, Spurious inductance, PWM, ZVS