Abstract
Induction Motors (IM) has always been preferred for its reliability, ruggedness and easier in maintenance. The IM drives controlled with the vector control method has found wide acceptance in the industry. However, this control technique requires complex coordinate transformation, inner current control loop and accurate system parameters. The direct torque control (DTC) method provides robust and fast torque response without such coordinate transformations, PWM pulse generation and current regulators. Moreover, DTC minimizes the use of motor parameters. This paper presents a study of DTC technique for voltage source inverter fed induction motor drives using MATLAB. The Simulink model and results that validates the DTC principle has been presented. This paper proves that DTC technique is easier to implement and keeps the variable within the range.
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