Design and Construction of Induction Motor Thermal Monitoring System

Proceedings of the 41st International Universities Power Engineering Conference Pub Date : 2006-09-01 DOI:10.1109/UPEC.2006.367564

H. Hafezi, A. Jalilian

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引用次数: 26

Abstract

Rotor and stator temperature rise in induction motors is considered to be a major cause of motor insulation degradation and motor failures. In most cases, it is necessary to monitor rotor bars and stator windings to make sure that their temperature remains below the allowable limits. In this paper, design and implementation of a temperature measuring system suitable for three-phase induction motors is described. The system contains two parts, rotating and stationary. In this work, digital temperature sensors are installed on rotor and stator windings. The data from the thermal sensors on the rotor is digitized using electronic parts and transmitted via light through IR receiver and transmitter between the rotor and the stator. A data acquisition system is employed for capturing data from electronic parts to PC for further analysis and monitoring purposes. Implementation of the monitoring system on a 5.5 kW 3-phase squirrel cage induction motor is described. Temperature rise in rotor bars and stator windings are monitored under no load and locked rotor conditions. It is shown that the system is capable for thermal monitoring of the test motor under various supply and load conditions

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感应电机热监测系统的设计与构建

异步电动机的转子和定子温升被认为是电动机绝缘退化和电动机故障的主要原因。在大多数情况下，有必要监测转子棒和定子绕组，以确保它们的温度保持在允许的极限以下。本文介绍了一种适用于三相感应电动机的温度测量系统的设计与实现。该系统包括旋转和静止两部分。在这项工作中，数字温度传感器安装在转子和定子绕组上。来自转子上热传感器的数据使用电子部件数字化，并通过红外接收器和发射器在转子和定子之间通过光传输。数据采集系统用于从电子部件捕获数据到PC机，以便进一步分析和监测。介绍了监控系统在5.5 kW三相鼠笼式异步电动机上的实现。在空载和锁定转子的情况下，对转子棒和定子绕组的温升进行监测。结果表明，该系统能够在各种供电和负载条件下对测试电机进行热监测

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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Proceedings of the 41st International Universities Power Engineering Conference

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