中国电机工程学报2024，Vol.44Issue(8)：3260-3268,中插27,10.DOI:10.13334/j.0258-8013.pcsee.223012
基于定子电流法的绕线转子无刷双馈发电机偏心故障研究
Study on Eccentricity Fault of Brushless Doubly-fed Generator With Wound Rotor Based on Motor Current Signature Analysis
摘要
Abstract
Brushless doubly-fed machine(BDFM)with wound rotor has great prospects in the field of generation system as ship shaft and wind power generator.Eccentricity fault is a common mechanical fault,which threatens the stable operation of modern industrial system,so it is of great importance to achieve condition monitoring and fault diagnosis.Traditional fault diagnosis methods are not directly applicable to BDFM due to the special design of winding and complex magnetic field pattern.This paper extracts the current harmonics of power winding as fault indicators by the motor current signal analysis(MCSA)to realize the non-invasive diagnosis of static-,dynamic-and mixed eccentricity.A time-stepped finite element model of the faulty machine is established.The characteristic frequencies that could result from different types of the faults are deduced through detailed mechanism analysis.Finally,a 2/4 number of pole pairs BDFM is used as an example and the accuracy and validity of analytical method is verified by finite element simulation and experiment,which provides a theoretical basis for accurate detection of eccentricity faults in brushless doubly-fed machine with wound rotor.关键词
无刷双馈发电机/转子偏心/时步有限元法/频谱分析/故障诊断Key words
brushless doubly-fed generator/rotor eccentricity/time-stepping finite-element/spectrum analysis/fault diagnosis分类
信息技术与安全科学引用本文复制引用
阚超豪,张恒,方裕超,蒋涛,程源..基于定子电流法的绕线转子无刷双馈发电机偏心故障研究[J].中国电机工程学报,2024,44(8):3260-3268,中插27,10.基金项目
国家自然科学基金项目(51377040) （51377040）
安徽省重点研究与开发计划项目(202104a05020078). Project Supported by National Natural Science Foundation of China(51377040) （202104a05020078）
Key Research and Development Program of Anhui Province(202104a05020078). （202104a05020078）
