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基于TMR传感器阵列的微电网过载电流检测方法

XIE Bing, ZHANG Gao, QIN Yuxin,CHEN Changxin

Journal of South-Central University for Nationalities(Natural Science Edition)(2023)

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Abstract
过载电流状态检测是微电网安全稳定运行的重要内容,针对单个传感器的测试误差问题以及测试过程中外界磁场的干扰问题,采用高灵敏度的TMR传感器构成传感阵列,减小微电网过载电流检测的测试误差.通过Ansoft Maxwell分析TMR传感器的安装位置,然后对TMR传感器阵列的模型进行了分析;最后通过测试实验,验证了所提测试方案的可行性.实验结果表明:TMR传感器阵列可以完成过载电流的检测,相比于单个TMR传感器,使用TMR传感器阵列可以将过载电流的峰值误差减少到0.12%.这对于微电网运行的状态监测提供了强有力的数据支撑.
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Key words
Tunneling Magneto Resistance,TMR sensor array,micro grid,overload current test
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