A novel type-2 fuzzy logic control of induction motor drive using space vector PWM

This paper presents space vector PWM (SVPWM) technique for Scalar Control of induction motor drive, SVPWM gives the lower ripples in current and voltage with low torque distortion, further the switching losses are reduced for a given switching frequency due to single switching transition takes place in each state of the vector. The PI-control (PIC) doesn´t give the good dynamic performance of the induction motor drive using two level Voltage Source Inverter due to sudden changes in the load and speed. Further to improve dynamic performance in the torque and Flux of induction motor drive is simulated using type-2 fuzzy logic control, which is replaced by PI-Control. The concept of type-2 fuzzy set was initially proposed is an extension of classical (type-1) fuzzy sets. Type-2 fuzzy sets are very useful in circumstances where it is difficult to determine an exact membership function for a fuzzy set; hence they are very effective for dealing with uncertainties. However, type-2 fuzzy sets are more difficult to understand than type-1 fuzzy sets. Even in the face of these difficulties, type-2 fuzzy logic has found applications in many fields like decision making in critical load.