Analytic calculation of magnetic field and force in Halbach permanent magnet linear motor

Author

Qi, Zhang ; Mengchun, Pan ; Dixiang, Chen

Author_Institution

Coll. of Mechatron. Eng. & Autom., Nat. Univ. of Defense Technol., Changsha, China

Volume

4

fYear

2011

Firstpage

77

Lastpage

80

Abstract

The calculating formula of magnetic field produced by single permanent magnet (PM) is deduced based on equivalent current model and magnetic field of Halbach PM array is also given. Secondly, A model of linear synchronous motor whose stator is air-cored coil and mover is Halbach PM array is designed. Then, air-gap magnetic field and force are calculated by both the above formula and commercial electromagnetic simulation software MaxWell. The error between the two methods is less than 2 percent. Compared with the software, the formula presented in the paper is accurate and timesaving which can be used as a fast calculating method for designing and validating linear synchronous motor with Halbach PM array.

Keywords

air gaps; linear synchronous motors; permanent magnet motors; stators; Halbach PM array; Halbach permanent magnet linear motor; MaxWell commercial electromagnetic simulation software; air-cored coil; air-gap magnetic field; air-gap magnetic force; equivalent current model; linear synchronous motor; stator; Arrays; Coils; Force; Magnetic fields; Magnetic flux; Permanent magnet motors; Synchronous motors; Analytic calculation; Halbach; linear synchronous motor; magnetic field;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronic Measurement & Instruments (ICEMI), 2011 10th International Conference on

Conference_Location

Chengdu

Print_ISBN

978-1-4244-8158-3

Type

conf

DOI

10.1109/ICEMI.2011.6037951

Filename

6037951