Comparative study of predictive control strategies at fixed switching frequency for an asymmetrical six-phase induction motor drive

Finite control set model predictive control techniques are mainly distinguished by a variable switching frequency which causes noise, large voltage and current ripples at low sampling frequency. This paper presents a comparative study of two enhanced predictive current control techniques with fixed switching frequency applied to an asymmetrical six-phase induction motor drive. Simulation results are developed to demonstrate the efficiency of the two current control algorithms using the mean squared error and total harmonic distortion as quality performance indices, thus concluding the advantages and disadvantages of each technique at steady and transient states.