The Use of fuzzy logic in the estimation of physical parameters of electric motors

II ABSTRACT Master Thesis THE USE OF FUZZY LOGIC IN THE ESTIMATION OF PHYSICAL PARAMETERS OF ELECTRIC MOTORS Mehmet KARAKOSE Firat University Graduate School of Natural and Applied Sciences Department of Computer Engineering 2001,Page:53 Performance of the field orientation in induction motors depends on the accurate estimation of the flux vector. The voltage model used for field orientation has in the flux calculation process an open integration problem, generally solved with a feedback loop. In this study, a fuzzy controller is developed for the feedback loop of the integrator. The proposed controller is tested on various motors of different power ratings, and it has been demonstrated that the proposed algorithm provides better than performance the PI controller nominally used in the feedback loop. The algorithm proposed to estimate the stator flux of an induction motor is simulated by using MATLAB-SIMULINK, and implemented on an experimental system using a TMS320C31 digital signal processor.