In this paper, a nonlinear indirect adaptive sensorless speed and #ux 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 #ux and speed measurement.
Non-linear adaptive control of induction motors
β Scribed by P. Vedagarbha; M. Feemster; P. Aquino; D. M. Dawson
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 243 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0890-6327
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β¦ Synopsis
Given measurements of rotor position, rotor velocity, and stator currents, we design an adaptive control scheme that is free of singularities, does not require rotor #ux measurements, and provides for simultaneous asymptotic rotor position/rotor #ux tracking despite the uncertainty associated with the mechanical subsystem parameters and the rotor resistance parameter. For the case when the rotor resistance parameter is known exactly, we modify the structure of the controller to achieve global asymptotic rotor position/rotor #ux tracking while accommodating for parameter uncertainty associated with the mechanical subsystem parameters and the stator electrical subsystem parameters. Experimental results are presented to illustrate the performance of the control structure.
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