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Integration of Matrix Converter with DTC of Induction Motor Drive Applications

Patra Venkaiah, Tegala. Srinivasa Rao, U Anjaiah

Direct Torque Control (DTC) method for AC machines is prevalently utilized in many variable speed drives, especially in case the torque control is more desired than speed control. This paper develops a direct torque control method (DTC) using a matrix converter fed induction motor. The advantages of matrix converters are combined with the advantages of the DTC technique; the required voltage vectors are generated to implement the conventional DTC method of induction motor. The proposed DTC algorithm is applied to induction motors and the simulation results are given in steady-state and transient conditions, while the discussion about the trend of the DTC method using the MC is also carried out.Proposed induction motor drive structure offers reduced device count, simple power-bus structure when compared to a conventional five-level NPC and flying capacitor inverter fed induction motor drives. The DTC technique provides ripple losses and friction losses reduce. So the induction motor having the most efficient. Here we are using IGBT switching and for the controlling purpose uses the state vector modulation. The simulation results are obtained using MATLAB/SIMULINK Software.