基于可行解及移动闭塞策略的新型逆变电路模型预测控制

摘要

Power electronic circuits are typical hybrid system .The paper established a hybrid system model for a fault-toler-ant inverter .Compared with the switch function model ,the hybrid system model of circuit could particularly depict the dynamic pro-cess of circuit ,which would be beneficial to the accurate control for the circuit .Then ,this paper researched circuit model predictive control(MPC) based on feasibility and move blocking ,and replaced optimal solution with feasibility solution ,which could reduce the number of control sequence and lower the switching frequency to fast solve the circuit MPC .Its feasibility and validity is verified by the simulation and experiment .%电力电子电路是典型的混杂系统，文章建立了一种新型容错逆变电路的混杂系统模型，与开关函数模型相比，电路混杂系统模型能更好地描述电路的动态过程，有助于实现电路的精确控制。在此基础之上，将可行解及移动闭塞的思想用于电路的MPC ，以电路可行解代替最优解，可有效减少电路控制序列总数、降低开关频率，实现电路MPC的快速求解，仿真和实验验证了控制方法的可行性与有效性。