SPERF环向场线圈脉冲电流源设计

Design of Pulsed Current Source for Toroidal Field Coils in SPERF

空间等离子体环境模拟与研究装置SPERF(Space Plasma Environment Research Facility)中,环向场TF(toroidal field)线圈用于磁重联实验,物理上要求该线圈的脉冲电流在80μs的时刻大于200 kA,这对脉冲电流源的整体设计、放电开关和放电测试等提出了较高的技术要求。研究TF线圈脉冲电流源的设计、关键技术和测试,以实现这种100μs量级的脉冲大电流。首先,介绍了脉冲电源的结构,计算了脉冲电源的参数,设计了脉冲电源的模块化结构;其次,研究了放电开关组件的设计和测试;最后,介绍了脉冲电流源的测试,测试结果表明脉冲电流源能可靠地工作。所研究的脉冲电源对SPERF磁重联实验的开展具有重要意义,同时对脉冲强磁场、脉冲功率和电磁兼容等领域也具有参考价值。

The toroidal field(TF)coils in the Space Plasma Environment Research Facility(SPERF)are used for the magnetic reconnection experiment,and the pulse current of TF coils is required to be greater than 200 kA at 80μs,which exerts higher technical requirements for the overall design of pulsed current source(PCS),discharge switch and discharge test.The design,key technologies and test of the PCS of TF coils are studied to realize a large pulse current at 100μs.First,the structure of PCS was introduced,its parameters were calculated,and its modular structure was designed.Second,the design and test of the discharge switch were studied.Finally,the discharge test of PCS was introduced,and test results show that it can work reliably.The PCS studied in this paper is of significance to the magnetic reconnection experiment carried out in SPERF,and it also has reference value in the fields such as pulsed high magnetic field,pulse power and electromagnetic compatibility.