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Non‐linear sensorless indirect adaptive speed control of induction motor with unknown rotor resistance and load
Author(s) -
Lin YuChao,
Fu LiChen,
Tsai ChinYu
Publication year - 2000
Publication title -
international journal of adaptive control and signal processing
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.73
H-Index - 66
eISSN - 1099-1115
pISSN - 0890-6327
DOI - 10.1002/(sici)1099-1115(200003/05)14:2/3<109::aid-acs588>3.0.co;2-5
Subject(s) - control theory (sociology) , stator , estimator , controller (irrigation) , rotor (electric) , induction motor , lyapunov function , torque , lyapunov stability , nonlinear system , vector control , electronic speed control , adaptive estimator , control engineering , computer science , engineering , control (management) , mathematics , physics , artificial intelligence , mechanical engineering , statistics , quantum mechanics , agronomy , electrical engineering , voltage , biology , thermodynamics
In this paper, a nonlinear indirect adaptive sensorless speed and flux tracking controller for induction motors is proposed. In the controller, only the stator currents are assumed to be measurable. Flux observers and rotor speed estimator are designed to relax the need to flux and speed measurement. Besides, two estimators are also designed to overcome drifting problem of the rotor resistance and unknown load torque. Rigorous stability analysis based on Lyapunov theory is also performed to guarantee that the controller designed here is stable. Computer simulations and experiments are done to demonstrate the performance of our design. Copyright © 2000 John Wiley & Sons, Ltd.