Implementing Fuzzy PI Scalar Control of Induction Motor

In Industrial applications of Induction motors the need for efficient controlling techniques is necessary. To fulfil this high efficiency controllers such as Fuzzy logic controllers (FLC's) should be utilised. These controllers have the following advantages over the conventional controllers: they are economical, they encompass a broader range of operating conditions, and they are more readily customizable in natural language terms. Another advantage of such a controller (a self organizing FLC) is its ability to provide an initial approximate set of fuzzy rules. In this paper the performance of a scalar V/F controlled induction motor drive is evaluated using closed loop PI (Proportional Integral) controller and closed loop fuzzy controller and the results are compared. Using Mamdani's method fuzzy control has been designed. Fuzzy approach has advantages over conventional techniques as demonstrated by the results obtained using both technique.