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Design and analysis of a plug-in robust compensator: an application to indirect-field-oriented-control induction machine drives

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2 Author(s)
Wai-Chuen Gan ; Dept. of Electr. & Electron. Eng., Hong Kong Univ. of Sci. & Technol., China ; Qiu, L.

It is well known that the system performance for an indirect-field-oriented-control induction motor drive degrades under the variation of rotor resistance and in the presence of external load torque. In this paper, a plug-in robust compensator for speed and position control enhancement of an indirect-field-oriented-control induction machine drive is developed. In the case where a controller for the induction machine already exists or is in operation with satisfactory nominal tracking performance, this plug-in compensator, designed using the H loop-shaping techniques, can be plugged into the existing controller without affecting the already satisfactory nominal tracking performance of the existing closed-loop system but with the capability to improve the system performance under plant parameter variations and in the presence of external disturbances. Simulation and experimental results are given to validate the proposed plug-in robust compensator.

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Industrial Electronics, IEEE Transactions on  (Volume:50 ,  Issue: 2 )