Unbalanced magnetic force and cogging torque of PM motors due to the interaction between PM magnetization and stator eccentricity

We investigate the characteristics of cogging torque and unbalanced magnetic forces (UMF) due to the interaction between magnetization of permanent magnets (PM) and stator eccentricity in PM motors. We mathematically and numerically show that the third harmonic of PM magnetization with stator eccent...

Full description

Saved in:
Bibliographic Details
Published in:Microsystem technologies : sensors, actuators, systems integration actuators, systems integration, 2016-06, Vol.22 (6), p.1249-1255
Main Authors: Seo, Bosung, Sung, Sangjin, Kang, Kyungjin, Song, Jeongyong, Jang, Gunhee
Format: Article
Language:English
Subjects:
Electronics and Microelectronics
Engineering
Instrumentation
Mechanical Engineering
Nanotechnology
Technical Paper
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:We investigate the characteristics of cogging torque and unbalanced magnetic forces (UMF) due to the interaction between magnetization of permanent magnets (PM) and stator eccentricity in PM motors. We mathematically and numerically show that the third harmonic of PM magnetization with stator eccentricity decreases the amplitude of the pole harmonic of the cogging torque and UMF while at the same time increasing the amplitude of the least common multiple harmonic of the pole and slot numbers of cogging torque and UMF in PM motors. The effects of the third harmonic of PM magnetization in the PM motors with stator eccentricity were experimentally verified by measuring UMF and acoustic noise.
ISSN:0946-7076
1432-1858
DOI:10.1007/s00542-016-2839-x