Communication science et technologie
Volume 10, Numéro 1, Pages 137-147
2012-01-01
Sensorless Vector Control For Induction Motor Drive Based On An Adaptive Speed Observer Using The Fuzzy-logic Approach
Authors : A. Mechernene A. .
Abstract
Abstract :This paper proposes a sensorless speed observer method of an induction motor using fuzzy logic approach in rotor fieldoriented control system. Speed and rotor flux are estimated from only measurable variables, the stator voltages and currents. The proposed estimation algorithm uses a deterministic state observer combined with an intelligent adaptive mechanism based on fuzzy logic. The introducing of fuzzy logic is applied to achieve high-performance, a low sensibility to parameter variations and external influences. In order to verify its performances test the behavior of the control algorithm, numerical simulations are achieved. The simulation results have shown a good estimate speed and flux and an excellent tracking performance and have demonstrated convincingly the usefulness of adaptive observer based on fuzzy logic in variable speed drives with high performance.
Keywords
Index Terms-- Induction motor, field oriented control, fuzzy-logic, adaptive flux and speed observer.
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