Considering magnetic circuit saturation in calculation of electric drives operating with large overloads by torque

The article outlines the problems of calculating electric drives operating in the zone of significant overloads. An algorithm for parallel finite element calculation methods is presented which is performed using the criterion of minimum calculation time. It is shown that if the electric machine is represented by a system with distributed parameters, in the zone of significant overloads the calculated values of the electromagnetic torque can be substantially refined. Thus, in the electric drives of high power (above 500 kW) with a relatively small stator back, it is possible to clarify the value of the maximum permissible torque by (15–20) %.