AC losses in HTS coils for high-frequency and non-sinusoidal currents

被引：24

作者：

de Bruyn, B. J. H. ^{[1
]}

Jansen, J. W. ^{[1
]}

Lomonova, E. A. ^{[1
]}

机构：

[1] Eindhoven Univ Technol, Electromech & Power Elect Grp, Dept Elect Engn, POB 513, NL-5600 MB Eindhoven, Netherlands

来源：

SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 2017年 / 30卷 / 09期

关键词：

superconducting coils; type-II superconductors; AC losses; loss measurement; finite element analysis;

D O I：

10.1088/1361-6668/aa7c74

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

AC losses in racetrack coils that are wound of YBCO tapes are measured for sinusoidal and non-sinusoidal transport currents with fundamental frequencies up to 1. kHz. An electrical method to measure losses for non-sinusoidal currents is developed for this purpose. The measured losses are compared to the losses calculated by 2D finite element models with power-law material models. The frequency and waveform-dependency of the measured losses are shown and compared to the results of the models over a wide range of frequencies and waveforms. Finally, it is shown that the finite element models can accurately predict AC losses resulting from non-sinusoidal transport currents as are present in highly dynamic motors with AC armature coils.

引用

页数：8

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