Bearing Fault Diagnosis for Inverter-fed Motors via Resonant Filters

被引:0
|
作者
Khang, H. V. [1 ]
Karimi, H. R. [1 ]
Robbersmyr, K. G. [1 ]
机构
[1] Univ Agder, Fac Sci & Engn, Dept Engn, N-4879 Grimstad, Norway
来源
2014 INTERNATIONAL CONFERENCE ON MECHATRONICS AND CONTROL (ICMC) | 2014年
关键词
bearing faults; resonant filter; localized faults; INDUCTION-MOTOR;
D O I
暂无
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
Current-based technique is an economic solution to detect bearing faults in drive-trains. Localized faults produce characteristic vibration frequencies. When an electric motor is supplied by a frequency-converter, the current response includes not only the fundamental and fault related frequencies but also higher harmonics from the inverter. This paper introduces a resonant filter to pick up frequency components caused by the localized faults. The bearing fault frequencies are calculated by bearing geometry and motor speeds. The filter frequencies are selected as a function of motor speeds. The filter is independent of the load condition, so it can work at different motor operating points to detect the localized bearing faults. Simulation results will verify the effectiveness of the proposed method.
引用
收藏
页码:939 / 943
页数:5
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