ACCURACY ISSUES FOR PARAMETER-ESTIMATION OF FIELD-ORIENTED INDUCTION MACHINE DRIVES

This paper will attempt to resolve a major area of concern for self-commissioning of induction machine drives: easily implemented methods capable of accurate parameter estimation. Most of the self-commissioning techniques are based on some form of statistical analysis. Classical statistical techniques such as ARMA (z-transform) methods using sampled line voltages, phase currents, and rotor velocity can easily produce large (2x or more) parameter errors, The first principles causing the errors and the methods of reducing those effects to tolerable levels is the focus of this paper.