Design of Speed Controller for an Induction Motor with Inertia Variation

  • Sin E. C. (Department of Electric Engineering, Korea University) ;
  • Kong B. G. (Department of Electric Engineering, Korea University) ;
  • Kim J. S. (Department of Electric Engineering, Korea University) ;
  • Yoo J. Y. (Department of Electric Engineering, Korea University) ;
  • Park T. S. (Samsung Electronics advanced Lab.) ;
  • Lee J. H. (LG Electronics Multimedia Lab.)
  • Published : 2001.10.01

Abstract

In this paper, a novel design algorithm of speed controller for an Induction motor with the inertia variation is proposed. The main contribution of our work is a very robust, reliable and stable procedure for setting of the PI gains against the specified range of the inertia variation of an induction motor using Kharitonovs robust control theory. Therefore, the basic segment of controller design, the variation of induction motor inertia is estimated by the RLS (Recursive least square) method. PI based speed controller is widely used in industrial application for its simple structure and reliable performance. In addition the Kharitonov robust control theory is used for verification stability of closed-loop transfer function. The performance of this proposed design method is proved by digital simulation and experimentation with high performance DSP based induction motor driving system.

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