An induction motor position control system with direct torque control

This paper presents an implementation of a digital motion control system of induction motor vector drives for low speed area with a direct torque control (DTC) using 16-bit DSP TMS320F240. The DSP controller enables an enhanced real time algorithm and cost-effective design of intelligent controllers of induction motors which can be yield enhanced operation, fewer system components, lower system cost, increased efficiency and high performance. The system presented are: stator flux observer of current model whose inputs are current sensing of motor terminal and rotor angle; two hysteresis controllers; and an optimal switching look-up table by using fully integrated control software. The developed system are shown a good motion control response characteristic results and high performance features using 2.2 kW general purposed induction motor.