Calculation and measurement of radial and axial forces for a bearingless PMDC motor

Author

Wang, Fengxiang ; Xu, Longya

Author_Institution

Shenyang Univ. of Technol., China

Volume

1

fYear

2000

fDate

2000

Firstpage

249

Abstract

A bearingless motor is an electromotor without any kind of bearings. Knowing accurately the radial and axial forces applied to the rotor is particularly important to the magnetic suspension control of the rotor. This paper presents the calculation methods of radial and axial force based on 2-D and 3-D finite element analysis for bearingless PMDC motors, a simple and practical method to measure the static radial and axial forces of bearingless motors is introduced. The comparison of the calculated radial and axial forces with the tested results for a 4-pole bearingless PMDC motor is presented in the paper

Keywords

DC motors; finite element analysis; magnetic forces; magnetic variables measurement; permanent magnet motors; 2-D finite element analysis; 3-D finite element analysis; 4-pole bearingless PM DC motor; axial forces; bearingless PM DC motor; magnetic suspension control; radial forces; rotor; Control systems; DC motors; Finite element methods; Force control; Force measurement; Magnetic analysis; Magnetic forces; Magnetic levitation; Permanent magnet motors; Rotors;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 2000. Conference Record of the 2000 IEEE

Conference_Location

Rome

ISSN

0197-2618

Print_ISBN

0-7803-6401-5

Type

conf

DOI

10.1109/IAS.2000.881105

Filename

881105