Application of Improved Finite set Predictive Control in Three-Level Inverter

The T-type three-level grid-connected inverter can be directly used in high-voltage and high-power grid-connected environment. Compared with the traditional pulse width modulation (pulse width modulation, PWM), this scheme does not need a complex controller related parameter setting, and is easy to achieve grid-connected control. Based on the ideal FCS-MPC algorithm, the two-step prediction delay compensation and reference current deviation compensation process are added to improve the accuracy of the system control. Considering the predictive control itself has flexible control objectives of the inverter to optimize the overall performance of the inverter, and the program flow chart is given. The simulation and experimental results show that the improved prediction and control scheme of finite set model is not only feasible and effective, but also has a simple method, small total harmonic distortion rate (total harmonics distortion, THD), but also has the dynamic and static performance and reactive power compensation functions of good traditional prediction and control.