| CFQS装置准环对称测试用磁体电源系统设计 |
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| 引用本文： | 熊健,刘海,宣伟民,许宇鸿.CFQS装置准环对称测试用磁体电源系统设计[J].强激光与粒子束,2023,35(2):025001-1-025001-7. |
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| 作者姓名： | 熊健 刘海 宣伟民 许宇鸿 |
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| 作者单位： | 1.西南交通大学 物理科学与技术学院，成都 610031 |
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| 基金项目： | 国家自然科学基金项目(11905176);四川省国际科技合作项目(2021YFH0066) |
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| 摘 要： | CFQS装置是中国西南交通大学(SWJTU)和日本国家核融合科学研究所(NIFS)联合设计制造的中国首台准环对称仿星器,为满足装置0.1 T稳态运行的实验要求,需要为其磁体线圈设计相应的电源系统。本设计方案考虑工程实际估算线路阻抗,考虑工程裕度、电源以负载参数的1.2倍进行计算,并建立电源系统的Simulink仿真模型,分析负载电流纹波大小及网侧谐波含量。根据仿真结果优化设计方案,通过在直流侧增加无源滤波器,减小输出电流纹波,分析直流侧电压代数形式,计算滤波器参数,并仿真调节得到更加符合实际需求的滤波器参数,满足装置准环对称位形的分布磁场精度对磁体线圈电流纹波的要求。
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| 关 键 词： | CFQS装置 磁体线圈电源 直流滤波 网侧谐波 Simulink |
| 收稿时间： | 2022-05-20 |
Design of magnet power supply system for Quasi-Axisymmetric test of Chinese First Quasi-Axisymmetric Stellarator |
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| Affiliation: | 1.Department of Physics, Southwest Jiaotong University, Chendu 610031, China2.Southwest Institute of Physics of Nuclear Industry, Chengdu 610225, China |
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| Abstract: | Chinese First Quasi-Axisymmetric Stellarator (CFQS) is being constructed as an international joint project between the National Institute for Fusion Science in Japan and Southwest Jiaotong University in China. To meet the requirements of 0.1 T steady-state quasi-axisymmetric magnetic field configuration experiment, it is necessary to design and manufacture the corresponding power supply system for its magnet coil. Since the power grid capacity of the laboratory can’t achieve the power consumption required for 0.1 T operation of CFQS, the magnet coil power supply system uses 500 kVA energy storage power station, and the main circuit of the magnet coil power supply system adopts bridge thyristor rectification. In this design scheme, the line impedance is estimated according to the actual engineering situation. Considering the engineering margin, we calculate the power supply at 1.2 times of the actual load parameters, and build the Simulink simulation model of the power supply system to analyze the load current ripple and the harmonic content of the grid side. According to the simulation results, we optimize the design and reduce the output current ripple by adding a passive filter at the DC side. By this way, the output current ripple can meet the requirements of the quasi-axisymmetric magnetic field configuration. |
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