Eddy current loss reduction of superconducting magnets for MAGLEV with a multilayer superconducting sheet

Arata, Masanori; Kawai, Masamichi; Yamashita, Tomohisa; Fujita, Masafumi; Hamajima, T.; Sanada, Y.; Miura, Akihiko; Yamaguchi, M.; Yamaji, M.; Terai, Motoaki; Inadama, S.

doi:10.1109/77.614652

Cited by 12 publications

(4 citation statements)

References 5 publications

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Section: Theoretical Backgroundmentioning

confidence: 99%

“…Because the losses in the superconducting magnet have an influence on the design and the operation of the system, evaluations for loss in the superconducting magnet should be performed. For this reason, the studies on the loss in magnets for Maglev have been performed by several research groups [2], [3]. However, few studies have been conducted to evaluate the loss in superconducting magnet of the hybrid EMS system.…”

Section: Introductionmentioning

confidence: 98%

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A Study on the Loss in a Superconducting Magnet by the Control Current in a Hybrid Electro-Magnetic Suspension System

Kim

Jang

et al. 2012

IEEE Trans. Appl. Supercond.

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A proto-type hybrid electro-magnetic suspension system (hybrid EMS system) was developed by Yonsei university [1]. It is the first step of study on fundamental technology for advanced railroad system development. The proto-type hybrid EMS system consists of a ferromagnetic-core, a superconducting magnet (Bi-2223) for generating magneto-motive force (MMF) and a control coil for levitation control. This system has the characteristic of a control coil generating a magnetic flux to keep the levitation gap in constant value when the gap is attempted to be varied by external physical factors. In doing so, the induced current by the magnetic flux generate loss to the superconducting magnet inducing the possibility of an unstable system. Therefore, we have experimented and documented the results of evaluating the loss in the superconducting magnet generated by the control coil. This paper can be expected to suggest useful data for the design and operation of a hybrid EMS system.

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Section: Theoretical Backgroundmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

A Study on the Loss in a Superconducting Magnet by the Control Current in a Hybrid Electro-Magnetic Suspension System

Kim

Jang

et al. 2012

IEEE Trans. Appl. Supercond.

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“…Furthermore, the EDS system is very applicable to the high‐speed operating state owing to its load disturbance rejection. However, there are some key issues unsolved, such as the heating problem caused by high induced current, which limits the engineering application of the EDS system [10, 11].…”

Section: Introductionmentioning

confidence: 99%

Adaptive robust constrained state control for non‐linear maglev vehicle with guaranteed bounded airgap

Chen

et al. 2018

IET Control Theory & Applications

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“…Eddy currents are also induced in the hydrogen vessel and in the aluminum structure of the cryostat. As it has been proved in [15], the losses on the aluminum vessels are negligible (below 1 W per pole), but they were considered for analysis completeness of the analysis.…”

Section: Losses In Superconductorsmentioning

confidence: 99%

Superconducting Electromagnetic Launch System for Civil Aircraft

Bertola

Cox

Wheeler

et al. 2016

IEEE Trans. Appl. Supercond.

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Eddy current loss reduction of superconducting magnets for MAGLEV with a multilayer superconducting sheet

Cited by 12 publications

References 5 publications

A Study on the Loss in a Superconducting Magnet by the Control Current in a Hybrid Electro-Magnetic Suspension System

A Study on the Loss in a Superconducting Magnet by the Control Current in a Hybrid Electro-Magnetic Suspension System

Adaptive robust constrained state control for non‐linear maglev vehicle with guaranteed bounded airgap

Superconducting Electromagnetic Launch System for Civil Aircraft

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