Влияние неравномерности воздушного зазора на электромагнитные параметры и переходные процессы ротора при отключении асинхронных двигателей

Abstract

The article is devoted to analysis of the influence of the air gap accentricity on the electromagnetic quantities and transient processes in the rotor winding after witching off two induction motors from an electrical network The first part of the article deals with the accentricity-dependances of the reactances being caused by the changes in the mutual field and the spatial pattern components of the magnetic field set up by the slot and differential leakage fields, leakage fields in the tooth and coil-end of a motor. The second part is about the results of the mathematical simulation of the changes in the rotor current analyzed for, the MA 36-41/8Ф and BACK 450 M-6 types induction motors.