Non-linear sensorless indirect adaptive speed control of induction motor with unknown rotor resistance and load
Journal
International Journal of Adaptive Control and Signal Processing
Journal Volume
14
Journal Issue
2
Pages
109-140
Date Issued
2000
Author(s)
Abstract
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.
Other Subjects
Computer simulation; Control system synthesis; Electric resistance measurement; Induction motors; Lyapunov methods; Magnetic flux; Nonlinear control systems; Rotors (windings); Speed control; Stators; System stability; Torque control; Adaptive sensorless speed control; Flux tracking controller; Rotor resistance; Stator currents; Adaptive control systems
Type
journal article
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