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For superconducting coils with many turns, it is widely believed that the magnetic field from magnetization currents is negligible compared to the one generated by the whole coil. This article shows that this is not true for coils with a…

超导电性 · 物理学 2017-03-21 Enric Pardo

Theory of a high impedance coil (HIC) - a cable loop antenna with a modified shield - is discussed comprehensively for both in transmitting and receiving regimes. Understanding a weakness of the previously reported HIC in transmitting…

Numerical models are powerful tools to predict the electromagnetic behavior of superconductors. In recent years, a variety of models have been successfully developed to simulate high-temperature-superconducting (HTS) coated conductor tapes.…

超导电性 · 物理学 2016-02-17 Loïc Quéval , Víctor M. R. Zermeño , Francesco Grilli

In order to transport sufficiently high current, high-temperature superconductor (HTS) tapes are assembled in cable structures of different forms. In such cables, the tapes are tightly packed and have a strong electromagnetic interaction.…

超导电性 · 物理学 2018-07-04 Víctor M. R. Zermeño , Salman Quaiyum , Francesco Grilli

AC losses in conductor-on-rounded-core (CORC) cables of YBCO high-temperature superconducting (HTS) tapes are a significant challenge in HTS power applications. This study employs two finite element analysis (FEA) models to investigate the…

超导电性 · 物理学 2023-06-08 Linh N. Nguyen , Nathaniel Shields , Stephen Ashworth , Doan N. Nguyen

The common coil geometry provides an alternate design to the conventional cosine theta dipoles. It allows a wider range of conductor and magnet technologies. It also facilitates a low-cost, rapid-turn-around design and R&D program. Recent…

The REBCO coated conductor has the potential to be widely used in ultrahigh field magnets. It is well known, however, that it is not mechanically strong against delamination in the direction normal to its surface due to its intrinsic…

超导电性 · 物理学 2025-12-19 Jun Lu , Iain Dixon , Kwangmin Kim , Yan Xin , Hongyu Bai

Striation of HTS coated conductors (CCs) as a way to reduce their magnetization AC losses has been the subject of intense research in the past years by several groups. While the principle of this approach is well understood, its practical…

We aim to demonstrate an efficient method to calculate the AC losses in multi-pancake coils. This method extends Yuan front-track model into several pancake application and investigates the detail parameters in comparison with established…

超导电性 · 物理学 2015-03-13 Huiming Zhang , Min Zhang , Weijia Yuan

The implementation of the 2nd generation high-Tc superconductors in power applications, such as electrical transformers, motors and generators requires superconducting wires that are superior to copper Litz wires at cryogenic temperatures…

超导电性 · 物理学 2015-06-25 G. A. Levin , P. N. Barnes

This study evaluates the performance of a twisted pair transmission line coil as a transceive element for 7T MRI in terms of physical flexibility, robustness to shape deformations, and interelement decoupling. Each coil element was created…

Many superconducting power applications contain REBCO coils. Superconducting motors are very interesting for mobile applications like aviation, thanks to their high power per unit weight. In order to reduce the inductance, multi-tape…

超导电性 · 物理学 2019-04-18 Enric Pardo , Francesco Grilli , Yingzhen Liu , Simon Wolftaedler , Thomas Reis

The use of high-temperature superconductors in electric machines offers potentially large gains in performance compared to conventional conductors, but also comes with unique challenges. Here, the electromagnetic properties of…

The design of superconducting applications containing windings of superconducting wires or tapes requires electro-thermal quench modelling. In this article, we present a reliable numerical method based on a variational principle and we…

应用物理 · 物理学 2025-02-18 Enric Pardo , Anang Dadhich

Screening currents caused by varying magnetic fields degrade the homogeneity and stability of the magnetic fields created by $RE$BCO coated conductor coils. They are responsible for the AC loss, which is also important for other power…

超导电性 · 物理学 2016-11-01 Enric Pardo

High-temperature technical superconductors are potential candidates for compact and high-field tokamak magnets. The demand for higher fusion power can be met with an on-axis high magnetic field due to toroidal magnets. An R&D activity has…

High temperature superconducting (HTS) stacks of coated conductors (CCs) can work as strong trapped field magnets (TFMs) and show potential in electrical applications. Pulsed field magnetization (PFM) is a practical method to magnetize such…

超导电性 · 物理学 2018-07-04 Shengnan Zou , Victor Manuel Rodriguez Zermeno , Francesco Grilli

High temperature superconductor (HTS) (RE)Ba2Cu3Ox (REBCO) conductor on round core cable (CORC) has high current carrying capacity for high field magnet and power applications. In REBCO CORC cables, current redistribution occurs among tapes…

超导电性 · 物理学 2019-03-01 Yawei Wang , Jinxing Zheng , Zixuan Zhu , Min Zhang , Weijia Yuan

In the last 10-15 years, the most common strategy in the development of High Temperature Superconducting (HTS) cable for magnets has been to imitate Low Temperature Superconducting (LTS) cable designs. However, requirements for LTS…

超导电性 · 物理学 2020-08-26 Davide Uglietti , Rui Kang , Rainer Wesche , Francesco Grilli

This paper presents the alternating current (AC) loss analysis on high-temperature superconductor (HTS) Cross-Conductor (CroCo) cables, in order to evaluate whether they could be utilized for electrical power transmission. The modeling of…

超导电性 · 物理学 2019-02-20 Boyang Shen , T. A. Coombs , Francesco Grilli