LLC半桥谐振电路设计的优化探讨  

Optimization of LLC half bridge resonant circuit design

作　　者：魏永志 WEI Yongzhi(Hohhot Metro Operation Co.,Ltd.,Hohhot 010010,China)

机构地区：[1]呼和浩特市地铁运营有限公司,内蒙古呼和浩特010010

出　　处：《电子设计工程》2023年第24期136-140,共5页Electronic Design Engineering

摘　　要：基于优化LLC半桥谐振电路设计,提升LLC半桥谐振电路的控制效果的目的,采用了将LLC半桥谐振电路中两个电容器和一个电抗器更换为模拟信号驱动可调整定值元件的方法,使用一个嵌入式32位开发芯片作为控制器,配合五个数模转换芯片,同时接入电流传感器和电压传感器芯片,构成经过智能化优化的LLC半桥谐振电路的试验。得出电源能耗下降54.17%,晶闸管最高温度下降29.01%,输出电源的电压峰值浮动范围压缩60.22%,谷值浮动范围压缩36.03%,调整时间的均值压缩50.37%的结果,说明智能化LLC半桥谐振电路可以提供更高质量的电源开关控制效果。Based on the purpose of optimizing the design of LLC half⁃bridge resonant circuit and improving the control effect of LLC half⁃bridge resonant circuit.By replacing two capacitors and one reactor in the LLC half⁃bridge resonant circuit with analog signals to drive adjustable fixed value components,the experiment of intelligently optimized LLC half⁃bridge resonant circuit is formed by using one embedded 32bit development chip as the controller,five digital⁃to⁃analog conversion chips,and simultaneous access to current sensor and voltage sensor chip.It is concluded that the power consumption of the power supply decreases by 54.17%,the maximum temperature of the thyristor decreases by 29.01%,the voltage peak floating range of the output power supply is compressed by 60.22%,the valley floating range is compressed by 36.03%,and the average value of the adjustment time is compressed by 50.37%.The intelligent LLC half⁃bridge resonant circuit can provide higher quality power switch control effect.

关 键 词：半桥谐振电路 智能化 嵌入系统 电源能耗 调整时间 

分 类 号：TN710.2[电子电信—电路与系统]