Jointless pancake coil winding for minimizing electrical loss in HTS SMES for wind power

Jaesik Kang, Tae Kuk Ko, Essam A. Al-Ammar, Kyeon Hur

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Many different applications of superconducting devices have been designed using a modular pancake arrangement. It has been reported that this modular pancake structure provides excellent mechanical holding, effective cooling, and high magnetic flux density for stability of the superconducting coil. However, soldering for interconnecting each double pancake causes current decay, cryogenic coolant loss, and thermal stress. Thus, this paper investigates an improved double pancake winding, named the "jointless double pancake coil winding" and demonstrates the efficacy for minimizing the electrical loss of the high-temperature superconducting (HTS) coil, assembled in the modular double pancake types. It presents a winding method that avoids soldering between the pancake connections and thus removes the primary cause of the electrical loss generated in the existing design. This proposed winding method can effectively achieve zero electrical loss. This paper particularly presents the application of the proposed winding for the HTS-SMES and demonstrates the feasibility and improved functional benefits with reference to the conventional coil. This paper should maximize the operational benefits of using the SMES coil employing the proposed winding method in charge and discharge operations and should increase the effectiveness and efficiency in cryogenic systems.

Original languageEnglish
Article number7006688
JournalIEEE Transactions on Applied Superconductivity
Volume25
Issue number3
DOIs
Publication statusPublished - 2015 Jun 1

Fingerprint

Wind power
coils
soldering
Soldering
Cryogenics
Temperature
cryogenics
Superconducting devices
loss of coolant
superconducting devices
causes
Magnetic flux
thermal stresses
Thermal stress
Coolants
magnetic flux
flux density
Cooling
cooling
decay

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

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abstract = "Many different applications of superconducting devices have been designed using a modular pancake arrangement. It has been reported that this modular pancake structure provides excellent mechanical holding, effective cooling, and high magnetic flux density for stability of the superconducting coil. However, soldering for interconnecting each double pancake causes current decay, cryogenic coolant loss, and thermal stress. Thus, this paper investigates an improved double pancake winding, named the {"}jointless double pancake coil winding{"} and demonstrates the efficacy for minimizing the electrical loss of the high-temperature superconducting (HTS) coil, assembled in the modular double pancake types. It presents a winding method that avoids soldering between the pancake connections and thus removes the primary cause of the electrical loss generated in the existing design. This proposed winding method can effectively achieve zero electrical loss. This paper particularly presents the application of the proposed winding for the HTS-SMES and demonstrates the feasibility and improved functional benefits with reference to the conventional coil. This paper should maximize the operational benefits of using the SMES coil employing the proposed winding method in charge and discharge operations and should increase the effectiveness and efficiency in cryogenic systems.",
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Jointless pancake coil winding for minimizing electrical loss in HTS SMES for wind power. / Kang, Jaesik; Ko, Tae Kuk; Al-Ammar, Essam A.; Hur, Kyeon.

In: IEEE Transactions on Applied Superconductivity, Vol. 25, No. 3, 7006688, 01.06.2015.

Research output: Contribution to journalArticle

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