Influence of stator structure on electromechanical parameters of torus-type brushless DC motor

Author

Mendrela, Ernest A. ; Beniak, Ryszard ; Wrobel, Rafal

Author_Institution

Opole Univ. of Technol., Poland

Volume

18

Issue

2

fYear

2003

fDate

6/1/2003 12:00:00 AM

Firstpage

231

Lastpage

237

Abstract

Five torus-type brushless DC motors, each with a different version of the stator core structure have been analyzed in the paper. The first one is a slotless stator core and the four others have the space between the adjacent coils of stator winding filled with the material made either of iron powder composite or laminated iron. An analysis of the motor performance is based on a three-dimensional (3-D) field motor model as well as on the circuit model of the inverter + motor set supplied from the battery. The toothed stator core versions show a significant increase of the average torque, and also an increase of torque ripple caused mainly by the rise of cogging torque. The analysis based on the simulation results is backed by measurements carried out on the prototype of slotless stator version of the motor.

Keywords

brushless DC motors; laminations; machine theory; magnetic fields; stators; torque; 3D field motor model; circuit model; cogging torque; electromechanical parameters; iron powder composite; laminated iron; motor performance; slotless stator core; stator core structure; toothed stator core; torque ripple; torus-type brushless DC motor; Brushless DC motors; Coils; Composite materials; DC motors; Iron; Performance analysis; Powders; Stator cores; Stator windings; Torque;

fLanguage

English

Journal_Title

Energy Conversion, IEEE Transactions on

Publisher

ieee

ISSN

0885-8969

Type

jour

DOI

10.1109/TEC.2002.801733

Filename

1201094