PERFORMANCE EVALUATION AND IMPROVEMENT OF AN FS-MPC FOR TWO-LEVEL VSI

This paper focuses on a combination of t hree-phase Voltage Source Inverter (VSI) with a predictive current control to provide an optimized system for three-phase inverter that controls the load current. The present contribution presents a Finite Set-Model Predictive Control (FS-MPC) strategy for a two-level three-phase VSI with resistive- inductive load (RL-Load). In order to reduce the computational effort which gives rise to multiple possibilities has been determined. With different cases the evaluation of the system is done. Firstly, the system performance with long prediction horizon is carried out. Secondly, the dynamic response of the system with step change in the amplitude of the reference is investigated. Thirdly, the control algorithm was tested with a square waveform in orthogonal coordinates as a reference current. Lastly, the system robustness with comparison of the model and actual system parameters of the proposed control algorithm is studied. Simulations are carried out using MATLAB/Simulink to test the effectiveness of an FSMPC for the two-level VSI with RL-Load.