Diagnosis of traction electric motor at irregularity in speed of anchor rotation
DOI:
https://doi.org/10.15802/stp2013/14793Keywords:
traction motor, techniques of traction motors diagnosing, irregularity in rotation frequency of anchorAbstract
Purpose. To offer a complex diagnostic parameter (or system of parameters) that would allow determining the fault of electric traction motor as well as electromagnetic and mechanical nature. Methodology. Technology transition to maintenance and repair of equipment in accordance with its actual condition are developed rapidly in the world practice in recent years. Control of equipment and forecasting of its technical condition with the use of non-destructive testing and diagnosis in-place methods is the basis of such technologies. In operation the reliability level of electrical machines including traction electric motor is very difficult to maintain. Analyzing failures of rolling stock, which arise from the operation, we can see that traction electric motors are the least reliable nodes. Diagnostics of traction electric motor at irregularity in speed of anchor rotation is proposed. A measurement device for irregularity in speed of anchor rotation was developed. Findings. An experimental research in order to determine the irregularity in speed of anchor armature shaft rotation and coupling of irregularity in speed of anchor rotation with traction electric motors nodes failures was executed. The experimental dependence of the waveform uneven rotation anchor for engines with different technical conditions. Originality. A method for diagnosis of traction electric motors at irregularity in speed of anchor armature shaft rotation was first proposed. This method after further improvement can be used at bench test of engines in their work without load and for the quality of the repair. Practical value. The device for detecting defects of the traction electric motor nodes as well as electromagnetic and mechanical nature without engine disassembly may be used for control of engine assembly after repair, and at testing of traction electric motor without load.
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