Title :
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
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;
Conference_Titel :
Electronic Measurement & Instruments (ICEMI), 2011 10th International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-8158-3
DOI :
10.1109/ICEMI.2011.6037951
