Three dimensional force prediction in a model linear brushless DC motor

Author

Moghani, J.S. ; Eastham, J.F. ; Akmese, R. ; Hill-Cottingham, R.J.

Author_Institution

Sch. of Electron. & Electr. Eng., Bath Univ., UK

Volume

30

Issue

6

fYear

1994

fDate

11/1/1994 12:00:00 AM

Firstpage

4752

Lastpage

4754

Abstract

Practical results are presented for the three axes forces produced on the primary of a linear brushless DC machine which is supplied from a three-phase delta-modulated inverter. Conditions of both lateral alignment and lateral displacement are considered. Finite element analysis using both two and three dimensional modelling is compared with the practical results. It is shown that a modified two dimensional model is adequate, where it can be used, in the aligned position and that the full three dimensional method gives good results when the machine is axially misaligned

Keywords

brushless DC motors; electric actuators; finite element analysis; linear motors; aligned position; axially misaligned; finite element analysis; full three dimensional method; lateral alignment; lateral displacement; model linear brushless DC motor; modified two dimensional model; three axes forces; three dimensional force prediction; three-phase delta-modulated inverter; Brushless DC motors; Building materials; Finite element methods; Force measurement; Inverters; Magnetic materials; Permanent magnets; Predictive models; Stator cores; Transducers;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.334211

Filename

334211