三相逆变器的结构能控性分析

Study on structural controllability of three-phase three-wire inverter

针对三相四线制逆变器的结构能控性问题,将其建模为一类状态变量变化连续的混杂系统,同时将混杂系统模型与图论方法结合起来,提出了适用于电力电子变换器结构能控性分析方法,并利用该方法分析了三相四线制逆变器的结构能控性,最后用切换线性系统能控性理论与仿真,验证了图论方法分析的可行性与正确性。

In order to study the controllability of three-phase three-wire inverter, the inverter was modeled as atype of hybrid system which had no abrupt change of the state variables. Thereafter, based on the hybrid systemmodel, the structural controllability of the three-phase three-wire inverter was studied by the graph theoryapproach. The research results show that the three-phase three-wire inverter is structural controllable.Simulations based on simulink was conducted to verify the correctness of the analysis.