Theoretical and Experimental Results of DC and AC Magnetic Flux Transformation Using HTS Superconducting Closed Loop

Abstract:

This paper presents the results of my experiments that may open a new path for advanced applications by using continuous closed superconducting YBCO loops. I examined a novel arrangement of a perfectly closed superconducting loop made of HTS wire in DC and AC flux transformer. I designed a self-limiting transformer with this solution. At the same time I also tested the operation of the continuous YBCO loop developed with my own technology. In the first experiment I used YBCO superconducting rings made from a bulk. Later I used superconducting wire. I could carry out these experiments because earlier I had elaborated the machining of the YBCO bulk and wire.

• Periodical: Advanced Materials Research (Volumes 354-355)
• Pages: 1265-1272
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.354-355.1265
• Online since: October 2011
• Authors: Janos Kósa
• Keywords: Liquid Nitrogen, Perfectly Closed Ybco Loop, Self-Limiting Transformer, Superconducting Transformer

References

[1] J. Kosa, I. Vajda: Environmentally friendly machining of ceramic based YBCO bulk superconductor, Journal of Materials Processing Technology, Volume 181, Issue 1-3 Pages 48-51 (2007).

DOI: 10.1016/j.jmatprotec.2006.03.007

[2] J. Kosa, I. Vajda, L. Farkas: Qualification of the Machining and Fitting Precision of YBCO Bulks and Rings Joined Together via the Examination of the Trapped Flux, IEEE Transactions on Applied Superconductivity, vol. 19, No. 3, pp.2182-2185, (2009).

DOI: 10.1109/tasc.2009.2017760

[3] J. Kosa, I. Vajda, T. Prikhna: Magnetization of YBCO bulks with permanent magnets and hybrid magnetizer, Journal of Optoelectronics and Advanced Materials Vol. 10, No. 5, pp.1005-1010, (2008).

[4] Woo-Seok Kim, Chan Park, Sang Ho Park, Jikwang Lee, Jung-Bin Song, Haigun Lee, Hee-Gyoun Lee, Gye-Won Hong, and Kyeongdal Choi: Magnetic Field Stability of a Small YBCO Magnet in Persistent Current Mode, IEEE Transactions on Applied Superconductivity, vol. 19, No. 3, pp.2194-2197, (2009).

DOI: 10.1109/tasc.2009.2018750

[5] J. Kosa, I. Vajda, A. Gyore: Application Possibilities with Continuous YBCO Loops Made of HTS Wire, Journal of Physics-Conference Series 234:(3) Paper 032030. (2010) http://www.ewh.ieee.org/tc/csc/europe/newsforum/Contents11.html, ST 153

DOI: 10.1088/1742-6596/234/3/032030

[6] J Kosa: Qualification of YBCO Rings and 100% YBCO Wire Loops with the Transformation of the DC Magnetic Field, Materials Science Forum, vol. 670, pp.11-20, (2011)

DOI: 10.4028/www.scientific.net/msf.670.11

[7] J. Kosa, I. Vajda: Transformation of the DC and AC Magnetic Field with Novel Application of the YBCO HTS ring, IEEE Transactions on Applied Superconductivity, vol. 19, No. 3, pp.2186-2189, (2009), www.ewh.ieee.org/tc/csc/europe/newsforum/technicalnews.html, ST 74.

DOI: 10.1109/tasc.2009.2017757

[8] J. Kosa, I. Vajda: Novel 3-Phase Self-Limiting Transformer With Magnetic Flux Applied by Perfect Closed YBCO Wire Loops,  IEEE Transactions on Applied Superconductivity, vol. 21, No. 3, pp.1388-1392, (2009).

DOI: 10.1109/tasc.2010.2088362