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Pohang, South Korea

Kim K.,Changwon National University | Go B.-S.,Changwon National University | Sung H.-J.,Changwon National University | Park H.-C.,Changwon National University | And 6 more authors.
Physica C: Superconductivity and its Applications | Year: 2014

This paper describes the design specifications and performance of a real toroid-type high temperature superconducting (HTS) DC reactor. The HTS DC reactor was designed using 2G HTS wires. The HTS coils of the toroid-type DC reactor magnet were made in the form of a D-shape. The target inductance of the HTS DC reactor was 400 mH. The expected operating temperature was under 20 K. The electromagnetic performance of the toroid-type HTS DC reactor magnet was analyzed using the finite element method program. A conduction cooling method was adopted for reactor magnet cooling. Performances of the toroid-type HTS DC reactor were analyzed through experiments conducted under the steady-state and charge conditions. The fundamental design specifications and the data obtained from this research will be applied to the design of a commercial-type HTS DC reactor. © 2014 Elsevier B.V. All rights reserved. Source


Kim K.,Changwon National University | Go B.-S.,Changwon National University | Park H.-C.,Changwon National University | Kim S.-K.,Changwon National University | And 5 more authors.
Physica C: Superconductivity and its Applications | Year: 2015

This paper describes design specifications and performance of a toroid-type high-temperature superconducting (HTS) DC reactor. The first phase operation targets of the HTS DC reactor were 400. mH and 400. A. The authors have developed a real HTS DC reactor system during the last three years. The HTS DC reactor was designed using 2G GdBCO HTS wires. The HTS coils of the toroid-type DC reactor magnet were made in the form of a D-shape. The electromagnetic performance of the toroid-type HTS DC reactor magnet was analyzed using the finite element method program. A conduction cooling method was adopted for reactor magnet cooling. The total system has been successfully developed and tested in connection with LCC type HVDC system. Now, the authors are studying a 400. mH, kA class toroid-type HTS DC reactor for the next phase research. The 1500. A class DC reactor system was designed using layered 13. mm GdBCO 2G HTS wire. The expected operating temperature is under 30. K. These fundamental data obtained through both works will usefully be applied to design a real toroid-type HTS DC reactor for grid application. © 2015. Source

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