A 0.2 MJ cryogen free Nb3Sn SMES in UPS application

Risto Mikkonen (Corresponding Author), Tapio Kalliohaka, A. Korpela, J. Lehtonen, R. Perälä

Research output: Contribution to journalArticleScientificpeer-review

8 Citations (Scopus)

Abstract

The rising industrial demand for a high-quality power supply has resulted in a growing interest in superconducting magnetic energy storage (SMES). These devices have a storage capacity ranging from fractions of MWs up to about 1 MWh. The commercialized units are based on NbTi technology at liquid helium temperature. The development of mechanical cooling systems has been very active during the recent years. The cooling capacities of cryocoolers are well around 10 W at 10 K. Based on this fact, a conduction-cooled Nb3Sn SMES concept has been built and tested (uninterrupted power supply) application. The cryogenic interface of the coil also provides the protection scheme of the magnet which helps speed up the current decay during normality and thus diminishes the hot spot temperature in the winding. The test results are presented and discussed together with problems related to the cryointegration of the magnet. The magnet system has been demonstrated to compensate a short term loss of power.
Original languageEnglish
Pages (from-to)946-950
Number of pages5
JournalSuperconductor Science and Technology
Volume16
Issue number8
DOIs
Publication statusPublished - 2003
MoE publication typeA1 Journal article-refereed

Fingerprint

magnetic energy storage
Energy storage
Magnets
magnets
power supplies
normality
Helium
cooling systems
Power quality
Cooling systems
liquid helium
Cryogenics
cryogenics
coils
Cooling
cooling
conduction
Temperature
temperature
Liquids

Keywords

  • superconducting magnets
  • SMES
  • superconducting magnetic energy storage
  • cryogenic
  • energy storage
  • UPS

Cite this

Mikkonen, R., Kalliohaka, T., Korpela, A., Lehtonen, J., & Perälä, R. (2003). A 0.2 MJ cryogen free Nb3Sn SMES in UPS application. Superconductor Science and Technology, 16(8), 946-950. https://doi.org/10.1088/0953-2048/16/8/321
Mikkonen, Risto ; Kalliohaka, Tapio ; Korpela, A. ; Lehtonen, J. ; Perälä, R. / A 0.2 MJ cryogen free Nb3Sn SMES in UPS application. In: Superconductor Science and Technology. 2003 ; Vol. 16, No. 8. pp. 946-950.
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Mikkonen, R, Kalliohaka, T, Korpela, A, Lehtonen, J & Perälä, R 2003, 'A 0.2 MJ cryogen free Nb3Sn SMES in UPS application', Superconductor Science and Technology, vol. 16, no. 8, pp. 946-950. https://doi.org/10.1088/0953-2048/16/8/321

A 0.2 MJ cryogen free Nb3Sn SMES in UPS application. / Mikkonen, Risto (Corresponding Author); Kalliohaka, Tapio; Korpela, A.; Lehtonen, J.; Perälä, R.

In: Superconductor Science and Technology, Vol. 16, No. 8, 2003, p. 946-950.

Research output: Contribution to journalArticleScientificpeer-review

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T1 - A 0.2 MJ cryogen free Nb3Sn SMES in UPS application

AU - Mikkonen, Risto

AU - Kalliohaka, Tapio

AU - Korpela, A.

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AB - The rising industrial demand for a high-quality power supply has resulted in a growing interest in superconducting magnetic energy storage (SMES). These devices have a storage capacity ranging from fractions of MWs up to about 1 MWh. The commercialized units are based on NbTi technology at liquid helium temperature. The development of mechanical cooling systems has been very active during the recent years. The cooling capacities of cryocoolers are well around 10 W at 10 K. Based on this fact, a conduction-cooled Nb3Sn SMES concept has been built and tested (uninterrupted power supply) application. The cryogenic interface of the coil also provides the protection scheme of the magnet which helps speed up the current decay during normality and thus diminishes the hot spot temperature in the winding. The test results are presented and discussed together with problems related to the cryointegration of the magnet. The magnet system has been demonstrated to compensate a short term loss of power.

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