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A Rotor Flux Observer Based on Nonlinear Quadrature Double Compensation

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In order to solve the problem of integration saturation drift and hardship in compensation quantity calculation exist in rotor flux observation of induction motor, a rotor flux observer method based on nonlinear quadrature double compensation is presented in this paper. The quantity of compensation is determined dynamically according to the quadrature level between flux and back electromotive force. With the order change of compensation and low-pass filter, quick response of flux is realized when signal frequency leaps. The experimental result shows that the method can improve the flux waveform, realize the accurate and swift track of flux.
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Document Type: Research Article

Publication date: March 1, 2012

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  • ADVANCED SCIENCE LETTERS is an international peer-reviewed journal with a very wide-ranging coverage, consolidates research activities in all areas of (1) Physical Sciences, (2) Biological Sciences, (3) Mathematical Sciences, (4) Engineering, (5) Computer and Information Sciences, and (6) Geosciences to publish original short communications, full research papers and timely brief (mini) reviews with authors photo and biography encompassing the basic and applied research and current developments in educational aspects of these scientific areas.
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