Ac loss evaluation of a superconducting pancake coil with coated conductors using an extended a-v formulation
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Dosyalar
Tarih
2021
Yazarlar
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Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In this study, an extended A-V formulation is used to determine the alternating current (AC) losses of a coil made
of high temperature superconducting (HTS) tape. The current is the same at each turn by balancing the voltages
of each turn. By this modification, this method can be applied in a wide application area. This method also
provides the chance to determine the calculations at currents higher than the critical current values in a more
stable way. The AC loss characteristics of the pancake coil are examined in detail by changing the current value
and frequency. Also, the losses at individual turns (1st, 5th, and 10th) are presented. It was seen that the most
outer and inner turns have higher losses than that of the other turns. The AC loss results obtained from the
extended A-V formulation used in this study are compared with experimental and H-formulation-based results
and are in good agreement. The frequency dependence of the pancake coil’s loss is revealed at 5 frequency
values. The results show that the loss is frequency and current amplitude dependent as expected. Similarly, the
calculated losses for each frequency are in good agreement with that obtained from the H- formulation. The
current distributions of a single tape and the entire coil are also presented, and all results are discussed in detail.
Açıklama
Anahtar Kelimeler
A-V Formulation, H-formulation, AC Loss, Pancake Coil
Kaynak
Physica C: Superconductivity and its applications
WoS Q Değeri
Q4
Scopus Q Değeri
Q2
Cilt
587
Sayı
Künye
Inanir, F., & Terzioglu, R. (2021). AC loss evaluation of a superconducting pancake coil with coated conductors using an extended AV formulation. Physica C: Superconductivity and its Applications, 587, 1353910.