双Buck逆变器的有限集模型预测控制

Dual Buck Inverter Based on Finite Control Set Model Predictive Control

以航空静止变流器为对象,对基于有限集模型预测控制(FCS-MPC)的单相双Buck逆变器进行研究,消除了电感电流纹波导致的过零畸变问题,并具有效率高、鲁棒性强等优点。首先建立双Buck逆变器的数学模型,分析FCS-MPC的原理。其次分析双极性正弦脉宽调制(SPWM)下,半周期控制所导致的过零畸变的原因,证明FCS-MPC可以有效减小甚至消除过零畸变。接着分析了模型参数误差的影响,得出FCS-MPC应用在双Buck逆变器上具有鲁棒性强、响应速度快等优点。最后通过仿真和实验进行了验证。

Taking the aviation static converter as the object,the single-phase dual Buck inverter based on finite control set model predictive control(FCS-MPC)is studied,which eliminates the zero-crossing distortion caused by the inductor current ripple,and has high efficiency and strong robustness.Firstly,the mathematical model of the dual Buck inverter is established,and the principle of FCS-MPC is analyzed.Secondly,the cause of zero-crossing distortion caused by half-cycle control under bipolar sine pulse width modulation(SPWM)is analyzed,and it is proved that the FCS-MPC can effectively reduce or even eliminate the zero-crossing distortion.Then the influence of model parameter error is analyzed,and it is concluded that the application of FCS-MPC to dual Buck inverters has the advantages of strong robustness and fast response speed.Finally,it is verified through simulation and experiment.