Finite control set model predictive control for two level inverter with fixed switching frequency

Conventional Finite Control Set Model Predictive Control (FCS-MPC) for power electronics has many open issues like weighting factor calculation, computation efficiency with increased horizon and variable switching frequency. A novel predictive control strategy for direct current control of two level voltage source inverter with fixed switching frequency (FSF) is proposed. The FCS-MPC-FSF controller fixes the switching frequency of output variable by applying hard constraints on number of commutations. The controller guarantees fixed number of commutations in the half of switching period in order to obtain constant switching frequency. The algorithm is proposed for FCS-MPC with prediction horizon N=1. Simulation results shows the FCS-MPC-FSF control strategy is feasible and has good transient and steady state performance as compared to FCS-MPC strategy.