电机裂纹转子刚度及模态参数分析

2022 7th International Conference on Mechanical Engineering and Robotics Research (ICMERR) Pub Date : 2022-12-09 DOI:10.1109/ICMERR56497.2022.10097794

Naresh K. Raghuwanshi

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引用次数: 1

摘要

电动机是把电能转化为机械能的装置。电机转子由一对永磁体转子和一个轴组成。转子系统中存在的故障是造成转子高振动并随之发生故障的原因。轴裂纹是降低转子系统刚度的常见故障之一。由于刚度的变化，转子系统的固有频率发生了变化。在本研究中，分析了裂纹对转子完全旋转的影响。分析了裂纹深度比、轴向裂纹位置等不同情况。讨论了裂纹对固有频率和振型的影响。观察到即使是小裂纹对刚度和模态参数的显著影响。

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Stiffness and Modal Parameter Analysis of Cracked Rotor Used in Electric Motor

Electric motor is a device used to convert electrical energy into mechanical energy. The electric motor rotor consist a pair of permanent magnets rotor along with a shaft. The faults present in the rotor system are responsible for high vibration and subsequently the failure occurs. The crack in the shaft is one of the common fault which reduces the stiffness of the rotor system. Due to variation in stiffness, natural frequencies of the rotor system are changed. In the present study the effect of the cracks are analyzed for a complete revolution of the rotor. Different cases are analyzed e.g. crack depth ratio and axial crack location. The effect of cracks on natural frequencies and mode shapes are also discussed. Significant effects of even small cracks on stiffness and modal parameters are observed.

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2022 7th International Conference on Mechanical Engineering and Robotics Research (ICMERR)

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