Salient Feature of State Observer in FCS-MPC for an Uninterruptible Power Supply

A prediction model, a cost function and an optimization algorithm grouped together to form a Finite Control Set Model Predictive Control (FCS-MPC). As a result, the FCS-success MPC's is dependent on the proper design of these three aspects. The impact of prediction model for an uninterruptible power supply is examined in this paper. Unpredictability of the load connected to VSI makes challenging condition for prediction model design. Rather than using traditional prediction approaches, a Kalman filter (KF) is utilised as a state observer to improve the MPC. The Kalman filter is very resistant to system parameter changes and noise. Comparative study of FCS-MPC of three phase VSI with and without state observer is carried out in this article. Simulation results shows a better result when state observer is used.