ITER稳态磁场测试装置磁体电源设计与控制研究  

Design and control of magnet power supply for ITER steady-state magnetic field test device

作　　者：黄海宏[1] 陶宏亮 王海欣[1] HUANG Hai-hong;TAO Hong-liang;WANG Hai-xin(Hefei University of Technology,Hefei 230009)

机构地区：[1]合肥工业大学,合肥230009

出　　处：《核聚变与等离子体物理》2023年第3期249-254,共6页Nuclear Fusion and Plasma Physics

摘　　要：ITER稳态磁场测试装置可产生特定的磁场条件,从而对进入ITER项目现场的实验设备进行稳态磁场合格测试。磁体电源是一关键部件,为稳态磁体提供高精度稳定大电流。介绍了13.5kA稳态磁体电源基本拓扑结构。为提升电源效率,引入同步整流工作方式,提出了双电流闭环控制策略,配合载波移相调制方式,减小负载电流纹波,保证各支路间均流效果良好,使输出稳态磁体电流精度控制在0.5%以内。通过仿真和实验结果证明了该稳态磁体电源系统设计的合理性。ITER steady-state magnetic field test device can produce specific magnetic field conditions,so as to conduct steady-state magnetic field qualification test for experimental equipment entering ITER project site.Magnet power supply is a key component,which provides high-precision,stable and high current for steady-state magnet.This paper first introduces the basic topology of the steady-state magnet power supply with 13.5kA.On this basis,in order to improve the power efficiency,the synchronous rectification working mode is introduced,and then a dual current closed-loop control strategy is proposed,which is combined with the carrier phase-shifting modulation mode to reduce the load current ripple,ensure the good current sharing effect between each branch,and control the accuracy of the output steady-state magnet current within 0.5%.Finally,the simulation and experimental results show that the design of the steady-state magnet power supply system is reasonable.

关 键 词：载波移相 同步整流 双电流闭环负反馈 BUCK电路 

分 类 号：TL62[核科学技术—核技术及应用] TM46[电气工程—电器]