On-Load Field Prediction of Surface-Mounted PM Machines Considering Nonlinearity Based on Hybrid Field Model

Analytical models show weakness in dealing with saturation in surface-mounted permanent-magnet machines. A hybrid field model (HFM) integrating complex permeance method (CPM) and lumped parameter magnetic circuit model (LPMCM) is proposed in this paper for predicting the on-load magnetic field consi...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on magnetics 2019-03, Vol.55 (3), p.1-11
Main Authors: Wu, L. J., Li, Zhaokai, Wang, Dong, Yin, Hao, Huang, Xiaoyan, Zhu, Z. Q.
Format: Article
Language:English
Subjects:
Air gaps
Analytical model
Analytical models
Boring
complex permeance
Equivalence
Finite element method
Iron
Magnetic circuits
Magnetic domains
magnetic equivalent circuit
Magnetic saturation
Magnetism
Mathematical models
Nonlinearity
Permanent magnets
Predictions
saturation effect
Saturation magnetization
Stator windings
Stators
surface-mounted permanent-magnet (SPM) machines
Teeth
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Analytical models show weakness in dealing with saturation in surface-mounted permanent-magnet machines. A hybrid field model (HFM) integrating complex permeance method (CPM) and lumped parameter magnetic circuit model (LPMCM) is proposed in this paper for predicting the on-load magnetic field considering nonlinearity effect of stator lamination. In the proposed model, the CPM calculates the field in the air gap and magnet regions, while LPMCM calculates the magnetic potential distribution inside the iron reflecting nonlinearity effect. The equivalent current sheet is obtained to replace such distribution on the stator bore. Moreover, local magnetic saturation of tooth tip is also transformed into equivalent current on the tooth surface. A solving procedure is proposed to calculate the equivalent current and guarantee the convergence. Compared with CPM, the proposed model considering the saturation effect significantly improves the prediction accuracy of the on-load performance. The HFM predictions are compared with finite element and experimental results. The excellent agreement validates its effectiveness.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2018.2890244