Axial Unbalanced Magnetic Force in a Permanent Magnet Motor Due to a Skewed Magnet and Rotor Eccentricities

被引：26

作者：

Kang, Chi Ho ^{[1
]}

Kang, Kyung Jin ^{[1
]}

Song, Jeong Yong ^{[1
]}

Cho, Young Jin ^{[1
]}

Jang, Gun Hee ^{[1
]}

机构：

[1] Hanyang Univ, Dept Mech Convergence Engn, Precis Rotating Electromech Machine Lab, Seoul 04763, South Korea

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2017年 / 53卷 / 11期

关键词：

Axial unbalanced magnetic force (UMF); eccentricity; permanent magnet (PM) motor; skew; LINEAR SYNCHRONOUS MOTOR; COGGING TORQUE; DESIGN PARAMETERS; PERFORMANCE; REDUCTION; VIBRATION; MACHINES;

D O I：

10.1109/TMAG.2017.2708319

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We investigate the effect of a skewed permanent magnet (PM) with overhang on the axial unbalanced magnetic force (UMF) of a PM motor, especially in the presence of static and dynamic eccentricities of a rotor. We derive the mathematical equations of the axial UMF acting on PM motor due to the skewed PM with overhang and rotor eccentricities. We develop a 3-D finite-element model of the PM motor, not only to verify the frequency components of the proposed equations but also to determine the amplitude of the axial UMF. Further, we develop an experimental setup to measure the axial UMF caused by a skewed PM with overhang and rotor eccentricities. We confirm that the skewed PM with overhang generates an axial UMF with the harmonic of the least common multiple of pole and slot numbers. In addition, the static and dynamic eccentricities with the interaction of the skewed PM and overhang generate the axial UMF with the pole harmonics and slot harmonics, respectively.

引用

页数：5

共 14 条

[1] DESIGN OF PERMANENT-MAGNET FLAT LINEAR MOTORS FOR STANDSTILL APPLICATIONS [J].

AKMESE, R ;

EASTHAM, JF .

IEEE TRANSACTIONS ON MAGNETICS, 1992, 28 (05) :3042-3044

[2] Design techniques for reducing the cogging torque in surface-mounted PM motors [J].

Bianchi, N ;

Bolognani, S .

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, 2002, 38 (05) :1259-1265

[3] The unbalanced magnetic pull and its effects on vibration in a three-phase generator with eccentric rotor [J].

Guo, D ;

Chu, F ;

Chen, D .

JOURNAL OF SOUND AND VIBRATION, 2002, 254 (02) :297-312

[4] Effect of skew, pole count and slot count on brushless motor radial force, cogging torque and back EMF [J].

Hanselman, DC .

IEE PROCEEDINGS-ELECTRIC POWER APPLICATIONS, 1997, 144 (05) :325-330

[5]

Hendershot J.R., 1994, DESIGN BRUSHLESS PER, p3.12

[6] Permanent-Magnet Synchronous Motor Magnet Designs With Skewing for Torque Ripple and Cogging Torque Reduction [J].

Islam, Rakib ;

Husain, Iqbal ;

Fardoun, Abbas ;

McLaughlin, Kevin .

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, 2009, 45 (01) :152-160

[7] Performance analysis of skewed PM linear synchronous motor according to various design parameters [J].

Jung, IS ;

Hur, J ;

Hyun, DS .

IEEE TRANSACTIONS ON MAGNETICS, 2001, 37 (05) :3653-3657

[8] 3-D analysis of permanent magnet linear synchronous motor with magnet arrangement using equivalent magnetic circuit network method [J].

Jung, IS ;

Hur, J ;

Hyun, DS .

IEEE TRANSACTIONS ON MAGNETICS, 1999, 35 (05) :3736-3738

[9] Characterization and Experimental Verification of the Axial Unbalanced Magnetic Force in Brushless DC Motors [J].

Kim, J. Y. ;

Sung, S. J. ;

Jang, G. H. .

IEEE TRANSACTIONS ON MAGNETICS, 2012, 48 (11) :3001-3004

[10] REDUCTION OF COGGING TORQUE IN PERMANENT-MAGNET MOTORS [J].

LI, TZ ;

SLEMON, G .

IEEE TRANSACTIONS ON MAGNETICS, 1988, 24 (06) :2901-2903

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