Structural Behavior of KSTAR CS Magnet During Plasma Operation

被引：6

作者：

Ahn, Hee-Jae ^{[1
]}

Park, Hyun-Ki ^{[1
]}

Kim, Jinsub ^{[1
]}

Kim, YoungOk ^{[1
]}

Kim, Kwang Pyo ^{[1
]}

Chu, Yong ^{[1
]}

Kim, Hyun-Seok ^{[1
]}

Park, Kaprai ^{[1
]}

Oh, Yeong-Kook ^{[1
]}

Lee, Sudo ^{[2
]}

Kim, Yong Hwan ^{[3
]}

机构：

[1] Natl Fus Res Inst, Daejeon 34133, South Korea

[2] DNDE, Busan 48059, South Korea

[3] Chungnam Natl Univ, Mech Engn Dept, Daejeon 34134, South Korea

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2018年 / 28卷 / 03期

关键词：

Electromagnetic analysis; long pulse plasma discharge; preloading; superconducting magnets; strain; structural analysis; ENGINEERING DESIGN STATUS; PRE-COMPRESSION;

D O I：

10.1109/TASC.2018.2799583

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The finite element model of KSTAR central solenoid (CS) magnet has been developedwith new smeared orthotropic material properties of CS coils and the effective coefficient of thermal expansion of the magnet structures. The accuracy of structural analysis for assembly and cool-down processes is higher than in previous studies. Electromagnetic analysis was performed to evaluate Lorentz forces of poloidal field (PF) coils during a long pulse discharge. The analyzed structural behavior of the CS magnet was clearly consistent with the measured data and calculated Electromagnetic (EM) forces during the plasma operation. The current of PF4 coil had a significant effect on axial compression and the minimum preloading was maintained at 2.0 MN in the end of plasma. EquivalentEMforce can easily predict the axial compression of CS magnet without complicated structural analysis. The study on the structural behavior of CS magnet is expected to provide the optimal combination of PF coil current limits for large plasma current and long pulse discharges.

引用

页数：5

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