基于LLC拓扑的微波炉变频电源的设计与仿真  

Design and Simulation of Variable-Frequency Microwave Oven Power Supply Based on LLC Topology

作　　者：董招辉[1] 阳璞琼[1] 胡波[1] 陈文光[1] DONG Zhao-hui;YANG Pu-qiong;HU Bo;CHEN Wen-guang(College of Klectrical Engineering , Nanhua University, Hengyang 421000, China)

机构地区：[1]南华大学电气工程学院,湖南衡阳421000

出　　处：《真空电子技术》2017年第3期23-26,共4页Vacuum Electronics

基　　金：衡阳市科学技术发展计划项目(2015KG50)

摘　　要：本文设计了一个以LLC谐振变换器为主电路,输出端采用倍压整流,L6599芯片为控制核心的功率可调高压变频微波炉电源。运用基波分析法推导出变换器的直流增益,利用MATLAB软件绘出了直流增益曲线,以此讨论了各参数对LLC谐振变换器的影响,优化各参数的设计。最后利用PSPICE软件对设计的微波炉电源主电路进行了仿真,设计并制作了一台电源样机,验证了设计的正确性和可行性。An adjustable high voltage variable-frequency microwave oven power supply was described,in which a LLC resonant converter with a voltage doubling rectifying circuit output end was used as main circuit topology,and a L6599 chip was used as control core.The DC gain of the converter was deduced by using the first harmonic analysis method,and the corresponding curve was drawn by using MATLAB software.The influence of various parameters on the LLC resonant converter was discussed,and then the parameters were optimized.Finally,the main circuit of the designed microwave oven power was simulated by PSPICE software;apower supply prototype was designed and produced,verifying the correctness and feasibility of the design.

关 键 词：LLC谐振变换器 微波炉 PSPICE仿真 变频电源 

分 类 号：TM924.76[电气工程—电力电子与电力传动]