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A New Rotor Time Constant Adaptation Method fop a VSI Fed Indirect Field Oriented Induction Motor Drive

Palanivel, S and Srinivas, P and Ranganathan, VT (1996) A New Rotor Time Constant Adaptation Method fop a VSI Fed Indirect Field Oriented Induction Motor Drive. In: 1996 International Conference on Power Electronics, Drives and Energy Systems for Industrial Growth, 8-11 January, New Delhi,India, Vol.1, 222 -228.


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Field oriented control of an induction motor requires the rotor time constant as an essential parameter to calculate both the magnitude and phase of the rotor flux vector. Therefore it becomes necessary to adapt the rotor time constant. A simple method based on current measurements alone is proposed. Since this method uses current measurements, which are smoother, compared to the voltage waveforms in a VSI-fed drive, the implementation is easy and noise free. The method also works during transients. The stator direct and quadrature current components are predicted, assuming a perfect value of rotor time constant in the control side. This is compared with the measured currents. A mismatch in this comparison, is an indication of an error in phase of the rotor flux. This information is used to correct the control side rotor time constant.

Item Type: Conference Paper
Publisher: IEEE
Additional Information: Copyright 1990 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Department/Centre: Division of Electrical Sciences > Electrical Engineering
Date Deposited: 06 May 2006
Last Modified: 19 Sep 2010 04:26
URI: http://eprints.iisc.ac.in/id/eprint/6559

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