The magnetic network model of hybrid step motor is established according to the air gap late permeance method, and the expression of the harmonic back EMF is deduced.
利用气隙比磁导法建立了混合式步进电动机的磁网络模型，推导出谐波反电势的表达式。
2
In this paper, the magnetic network model of hybrid step motor is established according to the air gap rate permeance method, and the expression of the harmonic back EMF is deduced.
利用气隙比磁导法建立了混合式步进电动机的磁网络模型，推导出谐波反电动势的表达式。
3
The stator cogging effect is usually ignored when we calculate generator magnetic field by air gap permeance method, which lead to the generator fault information missing.