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Method for designing PI-type fuzzy controllers for induction motor drives

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4 Author(s)
F. Alonge ; Dipartimento di Ingegneria Autom. e Inf., Palermo Univ., Italy ; F. D'Ippolito ; F. M. Raimondi ; A. Urso

The paper illustrates a new systematic method for designing PI-type fuzzy controllers for direct field-oriented controlled induction motor drives. First, linear and decoupled models expressing the dynamics of speed, rotor flux, direct and in-quadrature stator currents are derived using a nonlinear static compensator and choosing convenient input variables. Then, to guide the dynamics of the above quantities, four conventional PI controllers are designed independently, choosing their bandwidths conveniently. Finally, the input and output scale factors of PI-type fuzzy controllers are derived from the conventional PI controller parameters. The whole drive controller also includes a rotor flux observer and limiters to satisfy constraints on stator currents and voltages. Experimental results are shown to validate the proposed method

Published in:

IEE Proceedings - Control Theory and Applications  (Volume:148 ,  Issue: 1 )