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Journal of Shanghai University >

2026 , Vol. 32 >Issue 4: 628 - 640

DOI: https://doi.org/10.12066/j.issn.1007-2861.2732

Energy and Electrical Engineering

Dependency of transport AC loss in REBCO-CORC cables on current waveform

  • CUI Xiaotong ,
  • LI Wenhao ,
  • ZHOU Difan ,
  • LI Minjuan ,
  • CAI Chuanbing
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  • 1. College of Sciences, Shanghai University, Shanghai 200444, China;
    2. Shanghai Key Laboratory of High Temperature Superconductors, Shanghai 200444, China;
    3. Shanghai Creative Superconductor Technologies Co., Ltd., Shanghai 201403, China

Received date: 2026-02-02

  Online published: 2026-09-04

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Abstract

Conductor on round core (CORC) cables, made from high-temperature superconducting coated conductors, are considered one of the most promising cable architectures for power applications due to their superiority in current capacity and flexibility. The main factors hindering the large-scale application and development of CORC cables are high manufacturing costs and cooling costs, the latter of which is attributed to AC loss. In actual electromagnetic environments, the rapid switching transient process of power equipment and the nonlinear characteristics of passive components (capacitors and inductors) can cause harmonic distortion in power grids, resulting in superconducting tapes carrying non-sinusoidal current. Different transport current waveforms and cable topologies influence AC loss. However, the modulation effect of current waveforms on the transport AC loss of CORC cables is not yet clear. Based on the H equation, this paper comprehensively explores the effect of current waveforms and their frequencies on the AC loss of high-temperature superconducting CORC cables with different layers, providing valuable references for the design of low-loss waveforms, high-frequency applications, and multi-layer structure regulation of CORC cables.

Key words： AC loss; conductor on round core (CORC) cables; non-sinusoidal current

Cite this article

CUI Xiaotong , LI Wenhao , ZHOU Difan , LI Minjuan , CAI Chuanbing . Dependency of transport AC loss in REBCO-CORC cables on current waveform[J]. Journal of Shanghai University, 2026 , 32(4) : 628 -640 . DOI: 10.12066/j.issn.1007-2861.2732

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