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Conceptual Design of HTS Magnet for a 5 MJ Class SMES
Myungjin Park,Sangyeop Kwak,Wooseok Kim,Jikwang Lee,Jinho Han,Kyeongdal Choi,Hyunkyo Jung,Joonhan Bae,Seokho Kim,Kiduk Sim,Haejong Kim,Kichul Seong,Songyop Hanh IEEE 2008 IEEE transactions on applied superconductivity Vol.18 No.2
<P>Superconducting magnetic energy storage (SMES) systems with High Temperature Superconducting (HTS) wires have been actively developed world-wide. A 600 kJ class SMES with Bi-2223 HTS wire has been in development as a national project since 2004 and is currently approaching the final testing stage of the first of three phases. In the second phase of the project, several MJ class HTS SMES will be developed. In this paper, designs of magnets for 5 MJ class SMES with DI-BSSCO and YBCO coated conductor are presented and compared.</P>
The Optimal Design of 600 kJ SMES Magnet Based on Stress and Magnetic Field Analysis
Sangyeop Kwak,Myungjin Park,Wooseok Kim,Seungyong Hahn,Seungwook Lee,Jikwang Lee,Kyeongdal Choi,Jinho Han,Joonhan Bae,Seokho Kim,Kiduk Sim,Haejong Kim,Kichul Seong,Hyunkyo Jung,Songyop Hahn IEEE 2008 IEEE transactions on applied superconductivity Vol.18 No.2
<P>In the development of large scale superconducting magnetic energy storage (SMES) systems, the problem of mechanical stresses induced in the windings by Lorentz force becomes more critical as dimensions of system and magnetic field increase. In this paper, an optimal design process of a 600 kJ SMES magnet combined with mechanical stress analysis is presented. A stress analysis method based on electromagnetic finite element analysis (FEA) is explained in detail. The results of the analysis led to the development of an optimum design, electro-magnetically and mechanically, of a single-pole double pancake coil (DPC) type 600 kJ SMES magnet. The stress in each DPC are described along with recommendations for winding tension in the manufacturing process to minimize radial and hoop stress in each DPC.</P>