Development of elementary technologies for 100 kWh/20 MW SMES with multipurpose applications

Author

Yamamoto, Masahiro ; Hirano, Naoki ; Minemura, Tooru ; Shinoda, Kimiyuki ; Fujibayashi, Kazuo ; Sato, Hiromichi ; Washida, Sakae ; Ohmyo, Naoki ; Honda, Kazuo ; Tsutsumi, Katsuya ; Uchida, Naoyuki ; Kurihara, Ikuo

Author_Institution

Int. Superconductivity Technol. Center, Tokyo, Japan

Volume

4

fYear

2000

fDate

2000

Firstpage

2716

Abstract

Several technologies are being developed to establish a 100 kWh/20 MW superconducting magnetic energy storage (SMES) pilot plant with multipurpose applications. These technologies include the design, fabrication, and testing of a SMES model coil, current leads, coil protection systems, AC/DC converters and persistent current switches. In addition, the optimization of SMES systems and the effect of onsite applications were studied. The coil was confirmed to have a high current capacity (40.53 kA), a high level of stability, sufficient mechanical strength, outstanding electric insulation, and low-resistance coil connections. Other important developments include a yttrium-based 20 kA HTS current leads, a SHe flow method to be used as an alternative quench detection system, a snubber energy direct regeneration AC/DC converter system with an efficiency as high as 96.8%, and a persistent current switch with superconducting contacts. To evaluate the SMES protection, monitoring and control systems, a direct analogy SMES simulator was also developed

Keywords

high-temperature superconductors; superconducting cables; superconducting coils; superconducting magnet energy storage; superconducting magnets; 100 kWh; 20 MW; 20 kA; 40.53 kA; 96.8 percent; AC/DC power converters; SMES; alternative quench detection system; coil protection systems; current leads; electric insulation; elementary technologies; low-resistance coil connections; mechanical strength; model coil; multipurpose applications; persistent current switches; snubber energy direct regeneration; stability; superconducting magnetic energy storage; DC-DC power converters; Fabrication; Persistent currents; Protection; Samarium; Stability; Superconducting coils; Superconducting magnetic energy storage; Switches; System testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Engineering Society Winter Meeting, 2000. IEEE

Print_ISBN

0-7803-5935-6

Type

conf

DOI

10.1109/PESW.2000.847312

Filename

847312