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http://dx.doi.org/10.6109/JKIICE.2008.12.1.122

Direct Torque Control of Squirrel Cage Typed Induction Motor Using Fuzzy Controller  

Han, Sang-Soo (경원대학교 정보통신공학과)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.12, no.1, 2008 , pp. 122-129 More about this Journal
Abstract
The direct torque control method of an inverter fed squirrel cage typed induction motor using fuzzy logic controller has been proposed. This method is suitable for the traction which requires a fast torque response during the star-up and step change. The fuzzy control algorithm based upon the control principles of conventional DSC(Direct Self Controller) is developed. The fuzzy algorithm is tarried out by defuzzification strategy of the fuzzy output extracted from the possibility distribution of an inferred fuzzy control rule. The flux and torque of an induction motor are estimated by the dynamic model of the rotor flux field-oriented scheme which has decoupling characteristics and excellent dynamic response over a wide speed range. The proposed controller shows a good dynamic response. Moreover, since the fuzzy controller possesses highly adaptive capability, the performance of fuzzy controller is quite robust and insensitive to the motor parameters and change of operation conditions.
Keywords
Direct Self Control; Squirrel cage type induction motor; Fuzzy Controller; rotor flux field - oriented scheme;
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