Development of MPC algorithm for quasi Z-source inverter (qZSI)

Abstract

This paper presents an improvement algorithm of Model Predictive Control (MPC) for the quasi Z-Source Inverter (qZSI) with a standalone system. The improved algorithm decreases number of the desired sensors from five into three, where it just needs two current sensors for measuring the AC currents, and another voltage sensor for capacitor voltage detection. The inductor current will be estimated according to the previous optimized state and the capacitor voltage value during this state. Moreover, the developed algorithm decreases the number of the calculations for the inductor current prediction. Thus, the total cost of the control system decreases; furthermore, the practical implementation for the algorithm is improved where short running time. The developed algorithm will be investigated with the theoretical analysis in addition to the simulation validation based on MATLAB/SIMULINK as environmental software.