A method for reduction of cogging torque in brushless DC motor considering the distribution of magnetization by 3DEMCN

Journal Article · Tue Sep 01 00:00:00 EDT 1998 · IEEE Transactions on Magnetics

OSTI ID:665294

Hur, J; Hyun, D S ^[1]; Hong, J P ^[2]

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1. Hanyang Univ., Seoul (Korea, Republic of). Dept. of Electrical Engineering
2. Changwon National Univ. (Korea, Republic of). Dept. of Electrical Engineering

The method of reducing cogging torque and improving average torque has been studied by changing the dead zone angle of trapezoidal magnetization distribution of ring type rotor magnet in brushless DC motor (BLDCM). Because BLDCM has 3-D shape of overhang, 3-D analysis should be used for exact computation of its magnetic field. 3-D equivalent magnetic circuit network method (3-D EMCN) which can analyze an accurate 3-D magnetic field has been introduced. The analysis results of cogging torque using 3-D EMCN are compared with ones of 3-D finite element method (3-D FEM) and experimental data.

• OSTI ID: 665294
• Report Number(s): CONF-971159-; ISSN 0018-9464; TRN: IM9830%%141
• Journal Information: IEEE Transactions on Magnetics, Vol. 34, Issue 5Pt1; Conference: COMPUMAG `97: 11. conference on the computation of electromagnetic fields, Rio de Janeiro (Brazil), 3-6 Nov 1997; Other Information: PBD: Sep 1998
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
ELECTRIC MOTORS
DC SYSTEMS
TORQUE
MAGNETIZATION
THREE-DIMENSIONAL CALCULATIONS
COMPARATIVE EVALUATIONS
MAGNETIC CIRCUITS
EQUIVALENT CIRCUITS