摘要
研制了高压脉冲电容器恒流充电电源。采用IGBT构成电源的软开关电路和闭环变频的充电控制方式。对输出负载大范围变化引起的谐振频率漂移,采用与之相对应的微调开关时间,保证了变换器开关的零切换,显著降低了导通、关断时IGBT的损耗。充电实验表明,该电源恒流效果好、重复充电精度高、效率高,在短路状态下也能安全可靠地工作。
A 20kV capacitor-charging power supply using a series-resonant topology,where the IGBT components are controlled via a variable frequency closed loop feedback scheme,was built.The resonant frequency drift caused by wide range of load variation is compensated by adjusting IGBT on-time,which insures true Zero Current Switching （ZCS） of the converter.The power supply has demonstrated good output current stability, high efficiency and charging precision under high repetition rate.
出处
《电力电子技术》
CSCD
北大核心
2006年第3期104-106,共3页
Power Electronics
