Development of UPS-SMES as a protection from momentary voltage drop

We have been developing the UPS-SMES as a protection from momentary voltage drop and power failure. The superconducting system is suitable as electric power storage for large energy extraction in a short time. The most important feature of superconducting coil system for the UPS-SMES is easy handlin...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2004-06, Vol.14 (2), p.721-726
Main Authors: Mito, T., Kawagoe, A., Chikaraishi, H., Okumura, K., Abe, R., Baba, T., Yamauchi, K., Yokota, M., Henmi, T., Seo, K., Hayashi, K., Iwakuma, M., Sumiyoshi, F.
Format: Article
Language:English
Subjects:
Applied sciences
Boiling
Coiling
Control systems
DC-DC power converters
Direct energy conversion and energy accumulation
Electric potential
Electrical engineering. Electrical power engineering
Electrical power engineering
Electromagnets
Energy accumulation
Energy storage
Exact sciences and technology
Helium
High temperature superconductors
Liquid helium
Power electronics, power supplies
Power system protection
Samarium
Superconducting coils
Superconducting magnetic energy storage
Superconductivity
Switches
Uninterruptible power systems
Various equipment and components
Voltage
Voltage drop
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Summary:We have been developing the UPS-SMES as a protection from momentary voltage drop and power failure. The superconducting system is suitable as electric power storage for large energy extraction in a short time. The most important feature of superconducting coil system for the UPS-SMES is easy handling and maintenance-free operation. We have selected low temperature superconducting (LTS) coils instead of high temperature superconducting (HTS) coils from the viewpoint of cost and performance. However, it is difficult for the conventional LTS coils to fulfill maintenance-free operation since the cooling methods are either pool boiling with liquid helium or forced flow of supercritical helium. Thus, a conduction cooled LTS pulse coil has been designed as a key component of the UPS-SMES. The development program of 1 MW, 1 sec UPS-SMES is explained.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2004.830084