摘要
分析了零电压过渡ＰＷＭ软开关电路存在的辅助开关硬关断的问题，提出了一类新的辅助开关零电流关断的拓扑，并介绍了其工作原理。在功率为２９０Ｗ的升压型电路和功率为１００Ｗ的正激型电路装置上进行的实验，证明了拓扑的可行性，电路效率比传统的零电压过渡ＰＷＭ电路高。
The Zero-voltage-transition PWM converter is analized, and its problem of hard switching is also discussed. A new topology of zero-voltage-transition PWM converter with soft-switched auxiliary switch is introduced.The exeperiment on a 290W boost converter and a 100W forward converter are carried out to proved the circuit. The effi- ciency increasment of the new circuits are 25% comparing to hard switching circuits, and the efficiency of new circuits are also higher than that of the traditional zero-voltage-transition PWM topology.
出处
《电工技术杂志》
2000年第1期5-8,共4页
Electrotechnical Journal
