Direct Torque and Flux Control of an Induction Motor Using MRAS Technique

Direct Torque Control (DTC) has emerged as a powerful control technique for induction motors. It has replaced the vector control methods owing to the simplicity involved. Like many other control methods, it allows the control of induction motor in all four quadrants very efficiently. It has many adv...

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Bibliographic Details
Published inICFAI University journal of electrical & electronics engineering Vol. 9; no. 2; p. 19
Main Authors Sudheer, H, Kodad, S F, Sarvesh, B
Format Journal Article
LanguageEnglish
Published Hyderabad IUP Publications 01.04.2016
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Summary:Direct Torque Control (DTC) has emerged as a powerful control technique for induction motors. It has replaced the vector control methods owing to the simplicity involved. Like many other control methods, it allows the control of induction motor in all four quadrants very efficiently. It has many advantages over the traditional control methods such as minimum torque response time and no requirement of the voltage modulator blocks. However, when the parameters of the system vary along with disturbances in the load torque, the system's performance is reduced. To reduce the effect of the variations in parameters on the system's performance, one technique can be adapting the controller in real-time depending on the plant parameter variation and the load torque disturbance. Many adaptive control techniques are available, and one of them is Model Reference Adaptive System (MRAS). In this, the adaptive algorithm forces the plant's response to track the response of a reference model. The reference model may be fixed or adaptive. In this paper, the response of an induction motor to the DTC in the presence and absence of MRAS has been studied. The results at various operating conditions were obtained and analyzed using MATLAB/Simulink.
ISSN:0974-1704