Sensitivity analysis of the induction machine torque to the substituting circuit elements

Abstract

The paper deals with the theoretically derived sensitivity of the torque characteristics to individual substituting circuit parameters of the induction machine. It is considerably difficult to find the coincidence between the measured and calculated torque characteristics of the induction machine. It is caused by the implementation of several simplifying assumptions during the derivation of the torque characteristics. All of substituting circuit parameters are considered as constants when deriving characteristics. However, those assumptions don't meet with the real machine behavior. Particularly, skin-effect and temperature rise during measurement cause change of resistors values. Those changes afterwards lead to inaccuracy of characteristics comparison. © Springer International Publishing Switzerland 2014.