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超导磁体失超检测电路的设计

, PP. 239-247

Keywords: 有源功率检测法,超导储能,失超检测,电压隔离校正

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Abstract:

超导磁体的失超检测与保护是超导电力技术实用化的一个重要课题。为了实现对超导储能混合磁体的失超检测与保护,本论文根据混合磁体的特点及结构,在现有有源功率检测的基础上,提出了一种针对超导混合磁体的电压校正电路,通过对混合超导磁体上产生的失超信号进行隔离、放大、滤波以及比较等,实现失超信号的检测。设计并完成了失超检测系统硬件电路的制作与调试。通过搭建高温超导线圈的实验装置,在高温超导储能磁体上进行失超检测的实验研究,得出了电压矫正前后的线圈电压波形。给线圈分别以不同速度充电,研究充电速度对阀值电压、失超的起始点及临界电流的影响。实验线圈电压波形表明,该失超检测系统能及时、有效地检测超导混合磁体失超的发生。

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