Experimental Determination of Parameters for an Induction Motor with a Short-Circuited Rotor

摘要

Problems of experimental determination of parameters of induction motors with a short-circuited rotor in different operating regimes are considered. The equations of a generalized electrical machine are reduced to a form that allows identification of four independent parameters-the constant time of the rotor, stator inductance, stator active resistance, and generalized dissipation. It is shown that measuring the rotation frequency, voltages, currents, and electromagnetic torque allow estimation of the values of these parameters, but not five parameters of the standard phase-substitution circuit of the induction motor. Examples of experimental determination of parameters and parameters' dependence on the operation regime of a traction motor are given.