Stress Analysis of HTS Magnet for a 600 kJ SMES
Stress Analysis of HTS Magnet for a 600 kJ SMES
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DOI：
10.1109/tasc.2007.898500
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发表时间：
2007-07
影响因子：
1.8
通讯作者：
Myungjin Park;Sangyeop Kwak;Woo-Seok Kim;Seungwoo Lee;S. Hahn;Ji-kwang Lee;Jinho Han;Kyeongdal Choi;Hyun-kyo Jung;K. Seong;S. Hahn
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文献类型：
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作者：
Myungjin Park;Sangyeop Kwak;Woo-Seok Kim;Seungwoo Lee;S. Hahn;Ji-kwang Lee;Jinho Han;Kyeongdal Choi;Hyun-kyo Jung;K. Seong;S. Hahn
采用自整定小生境遗传算法对600 kJ级超导储能系统高温超导磁体在多种设计约束条件下进行优化设计。约束条件为磁体的运行损耗（小于2 W）、磁体的电感（小于24 H）、双饼线圈的数量（约10个DPC）、DPC的匝数（小于300匝）、DPC的外径（接近800 mm）和DPC中HTS导线的总长度（小于500 m）。通过优化设计，得到了600 kJ超导储能磁体在360 A和370 A两种工作电流下的设计参数。然而，即使高温超导磁体在电磁学方面进行了最佳设计，也不能忽视由于洛伦兹力引起的应力导致的机械完整性的考虑，以确保SMES系统的稳定运行。因此，我们开发了一个程序，通过有限元法（FEM），由于洛伦兹力在超导磁储能系统运行的应力分析。本文利用所编制的程序对所设计的高温超导磁体进行了应力（径向应力和环向应力）计算，并对应力分析结果进行了讨论。
Auto tuning niching genetic algorithm was used to design optimal HTS magnets for the 600 kJ class SMES system under several design constraint conditions. Constraint conditions were operation loss of magnet (less than 2 W), inductance of magnet (less than 24 H), the number of double pancake coils (about 10 DPCs), the number of turns of DPC (less than 300 turns), outer diameter of DPC (close to 800 mm) and total length of HTS wire in a DPC (less than 500 m). As a result of optimum design, we obtained design parameters for the 600 kJ SMES magnet according to two operating currents, 360 A and 370 A. However, even though the HTS magnet was designed optimally in respect to the electromagnetics, consideration of mechanical integrity due to the stress by Lorentz force must not be neglected for the stable operation of the SMES system. Therefore, we developed a program, through the finite element method (FEM), for stress analysis due to Lorentz force in operation of the SMES system. In this paper, the stresses (radial and hoop stress) imposed on the designed HTS magnets were calculated by the program, and the results of stress analysis were discussed.