Transient Voltage Distribution in Stator Winding of Electrical Machine Fed from aFrequency Converter

摘要

Standard induction motors are exposed to steep fronted, non-sinusoidal voltageswhen fed from frequency converters. These wave patterns can be destructive to the insulation. The aim of this work is to describe methods of predicting the magnitude and distribution of the interturn voltage resulting from fast fronted switching surges. Three methods are described for predicting the voltage distribution. Multiconductor transmission line theory forms the basis of the three methods described.