Numerical Investigation of the Critical Current and Trapped Flux Properties of the HTS-PMG Arrangements

Year 2020, Volume: 10 Issue: 4, 900 - 910, 15.10.2020

Murat Abdioğlu

https://doi.org/10.17714/gumusfenbil.701475

Abstract

The electromagnetic behaviour of the Maglev systems should be predicted to figure out the induced current and trapped flux distribution inside the high temperature superconductors (HTS) and thus to optimize the design of Maglev systems. In the present study, firstly we have obtained magnetic flux density distributions of single-PM and double-PM permanent magnetic guideways (PMGs) numerically by using magneto-static solution in AC/DC Module in COMSOL Multiphysics package. Then we have determined the trapped magnetic flux and induced current inside the HTS under the non-uniform magnetic field via the Partial Differential Equation (PDE) Mode in COMSOL by using H-formulation. Obtained numerical results in this study showed that different PMG configurations have various magnetic field characteristic and this situation can improve the magnetic and supercurrent properties of the HTS in Maglev system.

Keywords

Electromagnetic Simulation, , Bulk Superconductors, Permanent Magnetic Guideway

Supporting Institution

TÜBİTAK

Project Number

112T090, 118F426

Thanks

This work was supported by the Scientific and Technological Research Council of Turkey (TÜBİTAK) with project numbers of 112T090 and 118F426. The author also would like to thank to Prof. Kemal OZTURK for his kind scientific contribution to this work.

HTS-PMG Dizilimlerinin Kritik Akım ve Tuzaklanan Akı Özelliklerinin Nümerik Olarak İncelenmesi

Abstract

Yüksek
sıcaklık süperiletkenleri (HTS) içinde indüklenen akım ve tuzaklanan akı
dağılımının belirlenmesi ve böylece Maglev sistemlerinin tasarımının optimize edilmesi
için Maglev sistemlerinin elektromanyetik davranışı belirlenmelidir. Bu
çalışmada, ilk olarak COMSOL Multiphysics paket programının AC/DC Modülündeki
manyeto-statik çözüm kullanılarak tek-PM ve çift-PM manyetik kılavuzlama
yollarının (PMG) manyetik akı yoğunluğu dağılımlarını sayısal olarak elde edildi.
Daha sonra H-formülasyonu kullanarak COMSOL'daki Kısmi Diferansiyel Denklem
(PDE) modu ile homojen olmayan manyetik alan altında HTS içindeki tuzaklanan
manyetik akı ve indüklenen akı belirlendi. Bu çalışmada elde edilen sayısal
sonuçlar, farklı PMG konfigürasyonlarının çeşitli manyetik alan
karakteristiklerine sahip olduğunu ve bu durumun Maglev sistemindeki HTS'nin
manyetik ve süper akım özelliklerini iyileştirebileceğini göstermiştir.

Keywords

Elektromanyetik Simulasyon, Külçe Süperiletkenler, Manyetik Kılavuzlama Yolu

Project Number

112T090, 118F426

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