Research on typical faults of asynchronous traction motor for high power electric locomotive
ZHANG Shicong
Abstract：Based on the study of phase current signal,two typical faults of high-power electric locomotive of asynchronous traction motor,including the fault of broken rotor bar and inter-turn short circuit of stator winding,are diagnosed,and the finite element model built under the condition of motor fault is simulated.The results show that the asymmetry of the three-phase current is caused by the motor fault.The three-phase current under fault condition is post-processed through the spectrum analysis method and the symmetrical component method,thus extracting fault features in order to diagnose the fault of broken rotor bar and inter-turn short circuit of stator winding effectively.The results from test are consistent with the simulation and theoretical analysis,which proves the correctness of the fault model and also verifies the effectiveness of the fault diagnosis method based on phase current signals.
Keywords：high power electric locomotiveasynchronous traction motorfault diagnosisbroken rotor barinter-turn short circuit
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 122-128,137 )