Investigation of AC Loss in HTS Cross-Conductor Cables for Electrical Power Transmission

TL;DR

This study analyzes the AC losses in high-temperature superconductor Cross-Conductor cables using FEM modeling to evaluate their suitability for power transmission, focusing on loss behavior and current distribution.

Contribution

It provides a detailed FEM-based analysis of AC losses and current distribution in HTS CroCo cables, advancing understanding of their performance in power transmission.

Findings

AC losses depend on cable configuration and phase operation

Current distribution varies among tapes within the cable

Three-phase operation influences AC loss characteristics

Abstract

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 HTS CroCo cables was based on a cable assembled at the Karlsruhe Institute of Technology (KIT) and the AC loss calculation was based on the H-formulation model implemented in the finite-element method (FEM) software package COMSOL Multiphysics. The AC loss calculations have been carried out for isolated single-phase CroCo cable and three-phase CroCo cables. The AC loss angular dependence of a particular phase of CroCo cables during three phase operation has been studied. The current distributions of individual tapes within CroCo cables have been investigated.