采用电流矢量控制的电流型PWM AC/DC变换器非线性控制策略的研究

Study on Non-Linear Control Strategy of Current-Source PWM AC /DC Converter Wit Current Vertor Control

文章提出了一种采用电流矢量PWM控制的非线性控制策略,该方案通过电流矢量PWM控制来跟踪电流指令,从而简化了电流型PWMAC/DC变换器波形发生。在建立电流型PWMAC/DC变换器d-q模型基础上,采用输入输出线性化方法实现了解耦控制,给出了理论分析和调节器参数整定算法,并利用Mallab对控制策略进行了仿真,获得了预期效果。

In order to achieve high performance control for cur-rent -source PWM AC /DC converter,a n on -Linear control strategy with current vertor contro l is proposed in this paper.The proposed scheme simplifies the wave form control of current -source PWM AC /DC converter which tra cks the AC side current references.On the other hand,this p aper provides decoupling and linearization of bath d and q components of AC side currents us-ing input -output linearization based on d -q model.Further-more,the theoretical analysis and c ontroller design are presented.Simulation results are provided to v erify the operating principle of the scheme.