Diagnosis simulation of broken rotor bars in squirrel cage induction motor fed with variable frequency power

2008 ◽  
Author(s):  
Luo Ming ◽  
Liu Zhenxing ◽  
Zhou Heng ◽  
Zhang Xue ◽  
Gao Fangying
Keyword(s):  
Induction Motor ◽  
Variable Frequency ◽  
Broken Rotor Bars ◽  
Squirrel Cage ◽  
Squirrel Cage Induction Motor ◽  
Cage Induction Motor ◽  
Frequency Power

Detection of Broken Rotor Bars in Squirrel Cage Induction Motor Using Filter and Wavelet Analysis

2014 ◽  
Vol 577 ◽  
pp. 726-734
Author(s):  
Hong Yu Zhu ◽  
Jing Tao Hu ◽  
Lei Gao ◽  
Hao Huang
Keyword(s):  
Induction Motor ◽  
Fault Identification ◽  
Time Varying ◽  
Current Signal ◽  
Broken Rotor Bars ◽  
Squirrel Cage ◽  
Squirrel Cage Induction Motor ◽  
Low Pass ◽  
Cage Induction Motor ◽  
High Degree

A new method has been developed for the detection of broken rotor bars fault in squirrel cage induction motor during startup regimes. The incipient detection of fault is made by using DWT analysis of FIR low pass filtered original startup transient current signal. The extracted particular characteristic evolution of the time-varying signal is used as a fault index. The method was tested using healthy and damaged 3.0kW squirrel cage induction motors under no-load conditions. The results indicate that the method yields a high degree of performance in fault identification.

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