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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>
A Design Methodology for Toroid-Type SMES Using Analytical and Finite-Element Method
Kyung-Pyo Yi,Jong-Suk Ro,Seyeon Lee,Ji-Kwang Lee,Ki-Chul Seong,Kyeongdal Choi,Hyun-Kyo Jung,Songyop Hahn IEEE 2013 IEEE transactions on applied superconductivity Vol.23 No.3
<P>In this paper, a design methodology for toroid-type superconducting magnetic energy storage system using the analytical method and data table from finite element analysis is proposed. The method simplifies the model, and uses analytically derived equations to calculate the energy and center flux density. In order to determine the number of turns and current using the analytic process, perpendicular flux density and parallel flux density are obtained from the data table. A 2.5-MJ toroid-type superconducting magnetic energy storage system is designed using the proposed method.</P>