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首页> 外文期刊>IEEE Transactions on Energy Conversion >Online Monitoring of Electromagnetic Losses in an Electric Motor Indirectly Through Temperature Measurement
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Online Monitoring of Electromagnetic Losses in an Electric Motor Indirectly Through Temperature Measurement

机译：通过温度测量间接在线监测电机中的电磁损耗

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摘要

The condition monitoring of an electric motor is critical to its stable and reliable operation. The consequence of a fault is the variation in output performance and changes in the input electrical signature. One of the most common methods of fault detection is by analyzing the input current signature but this often requires expensive sensors. The other symptom of a faulty machine is when it runs "hot" due to an increase in losses generated. Temperature changes could be a useful indicator of the underlying fault. In this paper, a method of condition monitoring using temperature sensors embedded in an electric motor is presented. The components of electromagnetic losses generated are determined indirectly from temperature measurement in real time for a continuous drive cycle simulating normal and faulty operations. This is achieved through the inversion of the thermal model of the machine coupled with the application of a recursive parameter estimation method. Using temperature measurement for condition monitoring is advantageous since temperature sensors are low cost and already embedded in the machine for thermal protection. However, application of the method to a faulty motor and evaluation of its effectiveness in fault detection will be reported in a future work.
机译：电动机的状态监测对于其稳定可靠的运行至关重要。故障的后果是输出性能的变化和输入电气特征的变化。最常见的故障检测方法之一是分析输入电流特征，但这通常需要昂贵的传感器。故障机器的另一个症状是，由于产生的损耗增加，机器“发热”运行。温度变化可能是潜在故障的有用指标。本文提出了一种使用嵌入电机中的温度传感器进行状态监测的方法。产生的电磁损耗的分量是通过实时温度测量间接确定的，用于模拟正常和故障操作的连续驱动循环。这是通过机器热模型的反演以及递归参数估计方法的应用来实现的。使用温度测量进行状态监测是有利的，因为温度传感器成本低廉，并且已经嵌入机器中以提供热保护。然而，该方法在故障电机中的应用及其在故障检测中的有效性的评估将在未来的工作中报告。

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