✦ LIBER ✦

Superconducting magnetic energy storage device operating at liquid nitrogen temperatures

✍ Scribed by A. Friedman; N. Shaked; E. Perel; M. Sinvani; Y. Wolfus; Y. Yeshurun

Publisher: Elsevier Science
Year: 1999
Tongue: English
Weight: 287 KB
Volume: 39
Category: Article
ISSN: 0011-2275
DOI: 10.1016/s0011-2275(98)00126-x

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✦ Synopsis

A laboratory-scale superconducting energy storage (SMES) device based on a high-temperature superconducting coil was developed. This SMES has three major distinctive features: (a) it operates between 64 and 77K, using liquid nitrogen (LN 2 ) for cooling; (b) it uses a ferromagnetic core with a variable gap to increase the stored energy while retaining the critical current value; (c) it has the option for simultaneous energy charge and discharge which increases the power available at the SMES output by a factor of Յ 2 when operating as a converter. The present prototype of liquid nitrogen operating SMES stores 130 J at 64K and 60 J at 77K.

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