Patent ID: 6324494
Filing Date: 2001-11-27
Classification: H02K

Abstract:
A method of developing an end-turn leakage reactance approximation for turns of coils of a stator winding of an electric motor having a stator with a predetermined number of stator slots within which the turns of the coils of the stator winding are distributed according to a predetermined distribution, said stator winding including at least two stator poles, the method comprising the steps of:developing a first indication representing a pole-to-pole permeance based on an approximated leakage flux path linking coils of two poles;developing a second indication representing an individual pole permeance for an approximated leakage flux path linking coils of an individual pole; andcombining the first and second indications to produce an end-turn leakage reactance approximation;wherein at least one of the first and second indications is developed in accordance with a discrete representation of the predetermined distribution of the turns of the stator winding.