基于无感线圈应用于电机在线检测和监控的探究

PT100和热电偶广泛用于在线实时检测电机工作时的绕组温度，但其可靠性和准确性对实验环境较为敏感，相关测温示值易出现波动。目前市场有设备能准确在线检测电机绕组电阻，但使用不方便而且价格昂贵。文中采用无感线圈能够可靠地、准确地测量出GB/T1032-2012和GB/T22670-2018标准的电机热试验停机零秒的温度，从而能准确计算出电机温升值。在线监控方面也相对传统的测温具有更可靠和更精准的优点，并通过自动控制实现对电机过温保护。

Based on the research on the application of non-inductance coil in on-line detection and monitoring of motor

PT100 and thermocouple are widely used for on-line real-time detection of motor winding temperature, but their reliability and accuracy are sensitive to the experimental environment, and the relative temperature indication value is easy to fluctuate. At present, there are devices in the market that can accurately detect the resistance of motor winding on-line, but it is not convenient to use and expensive. In this paper, the zero-second temperature of motor shutdown in thermal test of GB / T1032-2012 and GB/T22670-2018 standards can be measured reliably and accurately by using non-inductive coil, thus the temperature rise of motor can be calculated accurately. On-line monitoring also has more reliable and more accurate advantages than the traditional temperature measurement, and through automatic control to achieve the motor over-temperature protection.