Enhanced predictive current control method for the asymmetrical dual—three phase induction machine

The interest in multiphase drives has re-emerged in the last decade, being the asymmetrical dual three-phase induction motor drive one of the most popular options. Predictive control techniques have been recently implemented in these multiphase drives. Proposed schemes have demonstrated high performance at the expenses of high computational cost, unknown switching frequency and the appearance of large undesirable stator current harmonic components. In this paper, an enhanced predictive current control technique (ePCC) with fixed switching frequency is presented for the asymmetrical dual three-phase ac drive. Fast torque and current response is achieved, and stator current harmonic suppression is favored. Experimental results are provided to examine the benefits of the proposed control method.