Eccentricity Faults Diagnosis Based on Motor Stray Magnetic Field Signature Analysis

被引：0

作者：

Xu, Changqing ^{[1
]}

Qiu, Chidong ^{[1
]}

Wu, Xinbo ^{[1
]}

机构：

[1] Dalian Maritime Univ, Marine Engn Coll, Dalian 116026, Peoples R China

来源：

2017 CHINESE AUTOMATION CONGRESS (CAC) | 2017年

基金：

中国国家自然科学基金;

关键词：

eccentricity; fault; stray magnetic field; stator current; finite element model; 3-PHASE INDUCTION-MOTORS; AIRGAP-ECCENTRICITY; VIBRATION; FLUX;

D O I：

暂无

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

In this paper, the stray magnetic field of induction motor under static eccentricity, dynamic eccentricity and mixed eccentricity faults is studied, and its frequency signatures are derived, where the theoretical analysis is based on the harmonic magnetomotive force and air gap permeance of induction motor with squirrel cage rotor. Motor stray magnetic field signature analysis has the advantages of simple measurement, low cost and noninvasive. The dynamic eccentricity and mixed eccentricity faults can be accurately identified by the combining of motor current and stray magnetic field signature analysis. First, the finite element model of induction motor is developed and the stator current and stray magnetic field can be simulated. Then, eccentricity fault diagnosis experimental platform is established, and hall sensor and magnetoresistive sensor are used to measure the stator current and stray magnetic field of motor. Finally, the simulation and experimental data are analyzed and the results prove the validity of the theoretical analysis, the method of motor stray magnetic field signature analysis can effectively diagnose the eccentricity faults.

引用

页码：5577 / 5582

页数：6

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