H桥级联型多电平矩阵变换器建模分析与控制

Modeling Analysis and Control Strategy of Cascade H-bridge Matrix Converter

H桥级联型矩阵交换器(CHB-MC)为一种新型的直接AC/AC变换器,非常适用于大容量风机并网。从输入、输出等效电路,调制策略等效模型及小信号模型入手,详细分析了CHB-MC数学模型,进而得到了CHBMC线性化状态空间及闭环控制策略。最后,通过仿真及实验对数学模型建模与控制策略进行了验证。

Cascade H-brldge matrix converter（CHB-MC） is a novel topology of direct AC/AC converter which is suitable for high power wind power grid-connected converter.The modeling of CHB-MC is analysed in detail.The equivalent model of input/output and modulation is buih.And the small-signal model is also presented.Furthermore ,the linear time invariant open-loop state space and closed-loop control strategy of CHB-MC are proposed.The analysis and control strategy are verified by both simulation and experiments.