Методика расчета тепловых сопротивлений статора частотно-управляемого асинхронного двигателя

Abstract

The article describes the method of determining the thermal resistances of the stator frequencyguided asynchronous motor, which is necessary for creating mathematical models of its thermal state. The article complements the previously published studies [1–6] and elaborates upon the question of determining the parameters of the equivalent thermal circuit frequency-guided asynchronous motor for stationary modes. The need to study the thermal state of the frequency-guided asynchronous motor are frequenting frequent failure of these engines due to overheating of the stator winding. Efficiency and adequacy of the mathematical model of the frequency-guided asynchronous motor thermal state was confirmed by experimental studies on two asynchronous motors.