On the issue of analytical calculations of the asynchronous motor start-up mode

Abstract

A method for calculating the transient processes of starting an asynchronous motor is proposed, as the basis of a mathematical model that takes into account the actual parameters and characteristics of the network, motor and load mechanism. The method is based on the analytical solution of the differential equation of the AC rotation at the interval of velocity change from zero to the critical corresponding to the critical slip and up to a value close to the nominal. This method will allow to determine the start-up time, power waste and overheating of the stator windings during one start-up, using the main nominal and starting data of the engine.