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Design of Superconducting Magnets for a 600 kJ SMES
박명진,곽상엽,이승욱,김우석,한승용,최경달,한진호,이지광,정현교,성기철,한송엽,Park, M.J.,Kwak, S.Y.,Lee, S.W.,Kim, W.S.,Hahn, S.Y.,Choi, K.D.,Han, J.H.,Lee, J.K.,Jung, H.K.,Seong, K.C.,Hahn, S.Y. The Korean Superconductivity Society 2006 Progress in superconductivity Vol.8 No.1
The design of superconducting magnets for a 600 kJ SEMS was discussed. The basic constraint conditions in the design of a 600 kJ SMES magnet were V-I loss(<1 W), inductance of magnet(<24 H), the number of Double Pancake Coils(DPC about 10), the number of turns of DPC(<300), outer diameter of DPC(close to 800 mm) and total length of HTS wire in a DPC(<500 m). As a result of optimum design, we obtained design parameters of the 600 kJ SMES magnet with two operating currents, 360 A and 370 A, which are in the limited conditions without V-I loss. V-I loss of each operating current was calculated with design parameters and V-I characteristic of the HTS wire. As a result of calculations, V-I losses with operating currents of 360 A and 370 A were 0.6 W and 1.86 W, respectively. Even though all design parameters of the SMES magnet in case of operating current of 360 A were in the restricted conditions, V-I loss of SMES magnet showed a tendency to generate at local DPCs, which are located on the top and the bottom of the SMES magnet more than that of the other DPCs.