Three-dimensional magnetic field analysis of micromotor by fast Fourier transform

Author

Zhang, Mingsheng ; Cai, Bingcu ; Zhao, Xiaolin ; Wang, Zongguang

Author_Institution

Inf. Storage Res. Center, Shanghai Jiaotong Univ., China

Volume

35

Issue

5

fYear

1999

fDate

9/1/1999 12:00:00 AM

Firstpage

3685

Lastpage

3687

Abstract

An analysis method based on FFT (Fast Fourier Transforms) for the three-dimensional magnetic field of a micromotor is presented. The magnetic field and the static magnetic force between stator and rotor of the micromotor can be calculated by using a pair of Fourier transforms and some spatial filtering. Analysis results show that the field and the static magnetic force drop off sharply with increasing gap between rotor and stator, and the static magnetic force is much larger than the weight of rotor

Keywords

fast Fourier transforms; machine theory; magnetic fields; magnetic forces; micromotors; permanent magnet motors; rotors; stators; 3D magnetic field analysis; FFT; PM axial-field micromotor; fast Fourier transform; micromotor; rotor; spatial filtering; static magnetic force; stator; three-dimensional magnetic field; Fast Fourier transforms; Fourier transforms; Magnetic analysis; Magnetic fields; Magnetic flux; Magnetic forces; Micromotors; Permanent magnets; Soft magnetic materials; Stators;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.800631

Filename

800631