Design of HTS magnets for a 2.5 MJ SMES

Sangyeop Kwak, Seyeon Lee, Sangyeop Lee, Woo Seok Kim, Ji Kwang Lee, Chan Park, Joonhan Bae, Jung Bin Song, Haigun Lee, Kyeongdal Choi, Kichul Seong, Hyunkyo Jung, Song Yop Hahn

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)


A 600 kJ HTS SMES system has been developed for power system stabilization as a national project in Korea. Successful operating tests of the 600 kJ were recently completed. In this paper, a 2.5 MJ class SMES with HTS magnets of single solenoid, multiple solenoid and modular toroid type were optimized using a recently developed multi-modal optimization technique named multi-grouped particle swarm optimization (MGPSO). The objective of the optimization was to minimize the total length of HTS superconductor wires satisfying some equality and inequality constraints. The stored energy and constraints were calculated using 3-D magnetic field analysis techniques and an automatic tetrahedral mesh generator. Optimized results were verified by 3D finite element method (FEM).

Original languageEnglish
Article number5067204
Pages (from-to)1985-1988
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number3
Publication statusPublished - 2009 Jun


  • HTS magnet
  • Multi-grouped particle swarm optimization (MGPSO)
  • SMES
  • Toroid

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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