基于固定开关频率控制策略的三相PWM整流器的建模与仿真

基金项目:

河南省重点科技攻关项目(082102240086)

河南科技大学科研基金项目(2003ZY27)

详细信息

Modeling and Simulation of Three-phase PWM Rectifier Based on Fixed Switching Frequency Control Strategy

Funds:

Supported by Key Science and Technology R&D Program of He'nan Province(082102240086)

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摘要: 介绍了三相PWM整流器的数学模型,分析了固定开关频率控制策略的原理,同时利用电压电流双闭环构建了PWM整流器控制结构,并在Matlab软件中对固定开关频率控制策略进行了仿真。通过直流侧电压和交流侧电流波形验证了固定开关频率控制策略的可行性。最后分析了PWM整流器关键参数的设置对交流侧输入电流谐波含量的影响,给出了一个较为合理的滤波电感参数。
- PWM整流器 /
- 电流控制 /
- 固定开关频率控制 /
- 功率因数 /
- 仿真
Abstract: The paper introduced a mathematical model of three-phase PWM rectifier, analyzed principle of fixed switching frequency control strategy,built control structure of PWM rectifier based on inner current loop and outer voltage loop the simulated the fixed switching frequency control strategy by use of Matlab. The simulation waves of voltage at DC side and current of AC side proved the finxed swithing frequency control strategy is feasible.Meanwhile,it analyzed influence of setting key parameters of PWM rectifier on harmonic content of input current at AC side,and gave a comparatively reasonable parameter of filter inductor.
- PWM rectifier /
- current control /
- fixed switching frequency control /
- power factor /
- simulation