An Improved Zero Current Commutation Model Predictive Torque Control Method for the Induction Motor Drives Fed by Indirect Matrix Converter

In order to improve the performances and ensure the safe commutation, an improved zero current commutation model predictive torque control (ZCC-MPTC) method is proposed for the induction motor drive system fed by indirect matrix converter (IMC-IM) in this paper. In this control method, zero voltage vectors are inserted in each sampling period to ensure zero current commutation for the bi-directional switches, and the effect caused by the zero vectors is considered and evaluated, as a result, the multiple objects optimization for the drive system can be realized completely. Simulation and experimental results show that good input/output performance of the IMC and steady-state/dynamic performances of the drive system are achieved by using the proposed control method. Compared with the conventional model predictive torque control (MPTC) method, the quality of input/output currents and the dynamic performance are improved significantly.