Title :
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
fDate :
3/1/1998 12:00:00 AM
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;
Journal_Title :
Energy Conversion, IEEE Transactions on
