A Model of the Assessment of an Induction Motor Condition and Operation Life, Based on the Measurement of the External Magnetic Field

The paper presents a method for the assessment of an induction motor condition and operation life, based on the measurement of the external magnetic field on the grounds of the distance metrics. We used the Busemann metrics to develop the criteria for the assessment of the degree of asymmetry of the motor, overheating of its stator windings and the reduction of their insulation life. We found a linear dependence between the winding insulation lifespan and the relative value of the Busemann distance. The obtained results enable a quantitative assessment of the operability of an induction motor and its operation life.