高频LLC感应加热电源及降低开关损耗策略研究
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering（2006）
Abstract
该文针对高频感应加热电源迅速发展的现状,通过对LC谐振回路特点进行简要分析,并结合电源结构特点进行讨论高频电源的特点及出现的问题.在此基础上,采用LLC谐振回路作为负载谐振拓扑.根据其工作特点采用输出电压和电容电压相位角作为锁相控制变量,同时为解决某些负载下LLC电源开关角度较大的问题,提出一种LLLC谐振回路,该方案通过加入的电感可以很好地降低开关角度,提高电源效率.最后根据给出理论结果完成实验,得到令人满意的效果.
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Key words
High frequency induction heating power,LLC resonant topology,LLLC topology,Switching power loss
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