【摘要】 发展软开关技术的出发点是提高开关频率 ,这在大功率应用场合显得尤其重要 .为了解决IGBT等大功率少子半导体器件在关断时由于出现电流“拖尾”而产生较高的关断损耗 ,我们构造了一种新型的可以恒频工作的SSIPP电路 ,并且应用Pspice对其进行了仿真 .该电路引入了有源箝位零电流开关技术 ,使主开关关断时的电流被箝位在一个很低的水平上 ,大大降低了大功率器件关断时产生的电流应力 .更多还原

【Abstract】 The main idea of soft switching is to improve the switching frequency. As for high_power applications, minority_carrier semiconductor devices, such as IGBT’s and BJT’s, are mainly used, but they suffer from a current tail at turn_off which causes considerably high turn_off switching loss. To reduce this loss, a novel AC_ZCS circuit is proposed and studied in this paper.更多还原