Persistent current effects in highly homogeneous superconducting magnets

Du, Junjie; Wu, Wei; Wu, Xi; Zhang, Guoshu; Zhao, Yong; Xiao, Ming

doi:10.1016/j.physc.2022.1354094

Cited by 2 publications

(1 citation statement)

References 19 publications

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“…To create the strongest magnetic field above the area of the switch, the use of a superconducting coil in the design of the electromagnetic turnout was suggested. In a superconducting electromagnet, the ohmic losses in the winding are minimal, as the current that creates the magnetic field flows mainly through the superconductor [21]. Therefore, such superconducting magnets can be a crucial element in magnetic structures to create permanent strong fields, such as in the electromagnetic turnout switch, and can be successfully used in practice.…”

Section: Figurementioning

confidence: 99%

Diamagnetic Screening in the Electromagnetic Turnout Switch for a High-Temperature Superconducting Maglev System

Gerasimenko,

Peng,

et al. 2023

Sustainability

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Maglev systems represent a cutting-edge high-speed transport technology, and turnout switches play a critical role in the creation of a highly branched network. There are two common types of turnouts for high-temperature superconducting (HTS) Maglev systems: mechanical and electromagnetic. Due to the many advantages, an electromagnetic turnout is a better choice for a Maglev system than a mechanical one. However, there is a difference in the distribution of the magnetic field over the turnout area and the permanent magnetic track, which cannot meet the safety requirements of the Maglev system. This article proposes a modernized design of an electromagnetic switch based on previously proposed optimization solutions by placing a diamagnetic screen between two electromagnetic poles of an electromagnet, thereby reducing the scattering fluxes between them. The method of diamagnetic screening and experimental methodology are described in this article. The experiment was carried out using a three-dimensional magnetic field scanner to provide results on the distribution of the magnetic field and the increase in the magnetic induction value over the electromagnet poles. Thus, this article provides valuable suggestions for improving the design of the electromagnetic turnout of HTS Maglev systems. Moreover, the proposed method can be applied to any magnetic device or electric machine with an open magnetic circuit.

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Section: Figurementioning

confidence: 99%