Unbalanced Magnetic Forces Due to Rotor Eccentricity in a Toroidally Wound BLDC Motor

被引：47

作者：

Kim, Daeyeon ^{[1
]}

Noh, Myounggyu D. ^{[1
]}

Park, Young-Woo ^{[1
]}

机构：

[1] Chungnam Natl Univ, Dept Mechatron Engn, Daejeon 34134, South Korea

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2016年 / 52卷 / 07期

基金：

新加坡国家研究基金会;

关键词：

Eccentricity; permanent-magnet motor; synchronous motor; unbalanced magnetic pull (UMP); MACHINES; FIELD;

D O I：

10.1109/TMAG.2016.2524589

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：

A common source of noise and vibrations in a permanent-magnetic synchronous motor is the radial forces due to rotor eccentricity. In this paper, we present entirely analytical models for the radial forces resulting from the eccentricity in a toroidally wound brushless dc motor by applying the perturbation theory. The air-gap magnetic field with eccentricity is first obtained. Then, the radial forces are obtained by integrating the Maxwell stress tensor. The radial force models are verified against the finite-element analysis (FEA). It is found that the maximum mismatch between the results by the model and by FEA is <2%, which confirms the validity of the model.

引用

页数：4

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