A Method of Assessing the Service Life and Reliability of Motor Brushes Based on Wear Under Variable Current and Environmental Conditions

Q3 Engineering

Tribology in Industry Pub Date : 2023-06-15 DOI:10.24874/ti.1443.02.23.06

V. Hung Pham, Duc Bao Le, PThuy Duong Nguyen

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引用次数: 0

Abstract

Wear behaviour determines the service life and reliability of the motor’s commutator and Brush, including mechanical and electrical wear. The temperature and relative humidity, especially humid tropical climate conditions, significantly affect the wear behaviour of commutator brushes. The traditional life tests are often manual and time-consuming due to a long expected life. This paper presents study results on the service life and reliability of graphite brushes when the temperature, relative humidity, and current change. The calculation method of service life and reliability depending on wear testing was used to evaluate the service life characteristics. The experimental results, service life, and reliability calculations showed that the service life and reliability of the graphite brushes were influenced clearly by current, temperature, relative humidity, and the probability of failure-free operation. It depends on the current more than relative humidity and temperature. In the range of changing current in this study, the service life: T P (99%) ~ 0.54*T P (50%), T P (95%) ~ 0.62*T P (50%), and T P (90%) ~ 0.68*T P (50%). © 2023 Published by Faculty of Engineering

查看原文本刊更多论文

基于变电流和环境条件下磨损的电刷使用寿命和可靠性评估方法

磨损行为决定了电机换向器和电刷的使用寿命和可靠性，包括机械和电气磨损。温度和相对湿度，特别是潮湿的热带气候条件，会显著影响换向器电刷的磨损行为。由于预期寿命长，传统的寿命测试通常是手动的并且耗时。本文介绍了石墨刷在温度、相对湿度和电流变化时的使用寿命和可靠性研究结果。采用基于磨损试验的使用寿命和可靠性计算方法来评估其使用寿命特性。实验结果、使用寿命和可靠性计算表明，电流、温度、相对湿度和无故障运行概率对石墨刷的使用寿命和可靠度有明显影响。它更多地取决于电流而不是相对湿度和温度。在本研究的变化电流范围内，使用寿命：T P（99%）~0.54*T P（50%），T P（95%）~0.62*T P。©2023工程学院出版

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Tribology in Industry Engineering-Mechanical Engineering

CiteScore

2.80

自引率

0.00%

发文量

审稿时长

8 weeks

期刊介绍： he aim of Tribology in Industry journal is to publish quality experimental and theoretical research papers in fields of the science of friction, wear and lubrication and any closely related fields. The scope includes all aspects of materials science, surface science, applied physics and mechanical engineering which relate directly to the subjects of wear and friction. Topical areas include, but are not limited to: Friction, Wear, Lubricants, Surface characterization, Surface engineering, Nanotribology, Contact mechanics, Coatings, Alloys, Composites, Tribological design, Biotribology, Green Tribology.