基于PWM控制的开关电源系统仿真研究  

Simulation Research of Switching Power Supply Based on PWM

作　　者：王冰[1] 张润和[1] 孙燕霞[1] 

机构地区：[1]内蒙古工业大学信息工程学院,内蒙古呼和浩特010051

出　　处：《现代电子技术》2009年第4期1-3,7,共4页Modern Electronics Technique

基　　金：内蒙古自治区自然科学基金资助项目(200607010808)

摘　　要：把开关电源系统表示成数学模型或非线性控制模型,利用Matlab建立一个离散的、非线性的仿真模型。并利用该模型对220 V高频开关电源进行仿真。仿真试验分析逆变电源工作过程和动态特性,逆变电源输出电压及其频谱分析、总谐波畸变率。对输出电压波形进行分析,结果表明:系统输出谐波含量比较少且具有良好的稳态性能。The switching power- supply system can be symbolized by mathematical model or nonlinear control model. A discrete and nonlinear simulation model of switching power supply is established by Matlab,it is used in the simulation of the 220V high frequency switching power supply. The simulation analyzes the working process and dynamic characteristics of inverter,as well as the input voltage, spectrum and THD （Total Harmonic Distortion） of inverter. The waveform of output voltage is analyzed and conclusion is drawn. The results indicate that： its harmonic content is quite few and the stable state performance is good.

关 键 词：开关电源 MATLAB 正弦波逆变器 脉宽调制 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]