文档介绍：Modelling of Electrical Machines by Using a Circuit-
Coupled Finite Element Method
Wei Wu
CSIRO munications & Industrial Physics, PO Box 218, Lindfield, NSW
2070, Australia
Abstract
This paper presents a nonlinear circuit-coupled 2D finite element model for use in the dynamic simulation
of electrical machines with multiple sets of windings, connected to an external electrical circuit, and with
rotating parts. An inductance is introduced to account for the 3D end effects on phase inductance, due to
the end windings and axial fringing field. The model is applied to the simulation of two types of electrical
machines, a permanent generator and a switched reluctance motor. The modeling procedures are
described and simulation results are presented. The calculated performances pared with test results
to validate the modeling.
Introduction
Electrical machines are rotary or linear moving power devices with multiple sets of coils connected to an
external electrical circuit. Two examples for the modern types of electrical machines are a permanent
generator (PMG) and a switched reluctance motor (SRM). The PMG studied has a radial-flux,
outer-rotor, slotted-stator and surface-mounted topology [1], as shown in Fig. 1(a). The permanent
s are bonded to the inner surface of a steel drum that rotates around a stationary stator with
conventional three-p