Stator and Rotor Shape Designs of Interior Permanent Magnet Type Brushless DC Motor for Reducing Torque Fluctuation

Author

Lee, Sun-Kwon ; Kang, Gyu-Hong ; Hur, Jin ; Kim, Byoung-Woo

Author_Institution

Korea Marine Equip. Res. Inst., Busan, South Korea

Volume

48

Issue

11

fYear

2012

Firstpage

4662

Lastpage

4665

Abstract

This paper presents the stator and rotor shape designs in interior permanent magnet (IPM) type brushless dc (BLDC) motor for reducing torque fluctuation. The partly enlarged air-gap made by rotor unequal out diameter and stator core structure with pole shoe modification is introduced. The torque ripple reduction is achieved by upgrading torque value at minimum torque position and their detail characteristics are compared. The final stator and rotor shape of IPM type BLDC motor is decided by design of experiments (DOE) process. The magnetic field and torque characteristics are analyzed by 2 dimensional (2D) finite element analysis (FEA) and their performances are validated by experimental results.

Keywords

air gaps; brushless DC motors; design of experiments; finite element analysis; permanent magnet motors; rotors; stators; 2D FEA; DOE process; IPM type BLDC motor; design of experiments process; interior permanent magnet type brushless DC motor; magnetic field; minimum torque position; partly enlarged air-gap; pole shoe modification; rotor shape designs; rotor unequal out diameter; stator core structure; stator shape designs; torque fluctuation reduction; torque ripple reduction; torque value; two-dimensional finite element analysis; Air gaps; Atmospheric modeling; Forging; Rotors; Stator cores; Torque; Cogging torque; IPM type BLDC; finite element analysis; torque ripple reduction;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2012.2201455

Filename

6332749