Estimation of current decay performance of HTS electromagnet for maglev

Chang Young Lee; Jung Min Jo; Young Jae Han; Duck Kweon Bae; Yong Soo Yoon; Sukjin Choi; Dong Keun Park; Tae Kuk Ko

doi:10.1109/TASC.2010.2040951

Estimation of current decay performance of HTS electromagnet for maglev

Chang Young Lee, Jung Min Jo, Young Jae Han, Duck Kweon Bae, Yong Soo Yoon, Sukjin Choi, Dong Keun Park, Tae Kuk Ko

Department of Electrical and Electronic Engineering

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

This paper deals with the estimation of current decay rates resulting persistent current mode (PCM) performance and its affect on design of high temperature superconducting (HTS) coil models used in an HTS electromagnet. The HTS coil models were designed to generate the required magneto motive force(MMF) on HTS electromagnets operating at various levitation gaps. We simulated the current decay rate with the self-inductance and joint resistance of the superconducting coil. The current decay rates of the models for the 10 mm levitation gap were in the range of 4.5% to 18%, whereas current decay rates of the models for the 25 mm levitation gap were in the range of 2.2% to 5.3%. It was found that the HTS electromagnet for large levitation gaps had more advantages than those for narrow air gaps in regards to designing an HTS coil with better PCM performance.

Original language	English
Article number	5433264
Pages (from-to)	907-910
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	20
Issue number	3
DOIs	https://doi.org/10.1109/TASC.2010.2040951
Publication status	Published - 2010 Jun

All Science Journal Classification (ASJC) codes

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

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10.1109/TASC.2010.2040951

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abstract = "This paper deals with the estimation of current decay rates resulting persistent current mode (PCM) performance and its affect on design of high temperature superconducting (HTS) coil models used in an HTS electromagnet. The HTS coil models were designed to generate the required magneto motive force(MMF) on HTS electromagnets operating at various levitation gaps. We simulated the current decay rate with the self-inductance and joint resistance of the superconducting coil. The current decay rates of the models for the 10 mm levitation gap were in the range of 4.5% to 18%, whereas current decay rates of the models for the 25 mm levitation gap were in the range of 2.2% to 5.3%. It was found that the HTS electromagnet for large levitation gaps had more advantages than those for narrow air gaps in regards to designing an HTS coil with better PCM performance.",

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AU - Jo, Jung Min

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AU - Bae, Duck Kweon

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AU - Choi, Sukjin

AU - Park, Dong Keun

AU - Ko, Tae Kuk

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Estimation of current decay performance of HTS electromagnet for maglev

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