Design analysis of permanent magnet DC motors with differing armature, magnet and yoke lengths

Author

Yegna Narayanan, S.S. ; Nair, K. R Anandahmaran ; Narayanan, S. S Yegna

Author_Institution

Dept. of Electr. Eng., Indian Inst. of Technol., Madras, India

Volume

13

Issue

1

fYear

1998

fDate

3/1/1998 12:00:00 AM

Firstpage

55

Lastpage

61

Abstract

A modified magnetic circuit method and a 2-D finite element procedure are presented here for the analysis of DC permanent magnet motors with differing armature, magnet and yoke lengths including nonlinear material behavior of steel and permanent magnet. A 12 V, 120 W motor is analyzed through these methods and compared with experimental results of a prototype sample. In case of finite element analysis, commutation effects and short chording of the armature winding are treated appropriately, and cogging torque and voltage ripple are predicted

Keywords

DC motors; commutation; finite element analysis; machine theory; machine windings; magnetic circuits; permanent magnet motors; 12 V; 120 W; 2-D finite element procedure; armature length; armature winding; cogging torque; commutation effects; design analysis; magnet length; modified magnetic circuit method; permanent magnet DC motors; short chording; voltage ripple; yoke length; Building materials; Commutation; DC motors; Finite element methods; Magnetic analysis; Magnetic circuits; Magnetic materials; Permanent magnet motors; Prototypes; Steel;

fLanguage

English

Journal_Title

Energy Conversion, IEEE Transactions on

Publisher

ieee

ISSN

0885-8969

Type

jour

DOI

10.1109/60.658204

Filename

658204