新型逆变电路有限控制集模型预测控制

针对传统开关函数模型只能描述电路的控制变迁而忽略了电路的条件变迁这一不足,建立了一种新型逆变电路更为精确的混合逻辑动态(mixed logical dynamical,MLD)模型,并将其作为预测模型,研究了航空新型电路的有限控制集模型预测控制(finite control set model predictive control,FCS-MPC)。FCS-MPC充分利用电路的离散特性,通过比较预测电压值和参考电压值的大小,将其差值作为衡量输入量的目标函数,最后选择电路控制集中使目标函数值最小的开关状态作为电路的控制输入,有效地解决了模型预测控制中混合整数二次规划(mixed integer quadratic programming,MIQP)问题的求解。仿真和实验验证了该控制方法具有良好动静态特性,证实了所提方法的有效性。

FCS-MPC for a new inverter

Considering the fact that traditional switching function model can only describe current control changes ,while ignoring condition changes , mixed logic dynamic ( MLD ) model for a new inverter was built,and the prediction model was used to research finite control set model predictive control ( FCS-MPC) for inverter.The distribution properties was fully considered by FCS-MPC,the switch state.Compa-ring with the reference voltage ,the difference between reference voltage and real voltage was regarded as the objective function .The switch state which minimized objective function was used as inverter input .The mixed integer quadratic programming ( MIQP) was well solved through this method .Its feasibility and va-lidity was verified by the simulation and test ,which has supported the method .