Design of a race-track coil for measurements of AC power losses in high-temperature superconducting tapes

• Autorzy: Trojanowski S. , Ciszek M. , Maievskyi E.

Identyfikatory

DOI

10.2478/mms-2014-0025

• Języki publikacji: EN

Abstrakty

EN

One of the most important parameters, crucial to applications of superconductors in cryo-electrotechnique, is power loss. Measurements of losses in superconducting long sample wires require AC magnetic fields of a special geometry and appropriate high homogeneity. In the paper part of the theoretical basis for calculations and a simple design method for a race-track coil set are presented. An example of such home-made coils, with a magnetic field uniformity of about 0.2 % over the range of about 8 cm, is given. Also a simple electronic measurement system for the determination of AC magnetization loss in samples of superconducting tapes is presented.

Słowa kluczowe

EN

magnetic field; race-track coils; AC losses; superconducting tapes and wires

• Wydawca: Komitet Metrologii i Aparatury Naukowej PAN
• Czasopismo: Metrology and Measurement Systems
• Rocznik: 2014
• Tom: Vol. 21, nr 2
• Strony: 293--304
• Opis fizyczny: Bibliogr. 14 poz., rys., tab., wykr., wzory

Twórcy

autor

Trojanowski S.

• Polish Academy of Sciences, Institute of Low Temperature and Structure Research, ul. Okólna 2, 50-422 Wrocław, Poland

autor

Ciszek M.

• Polish Academy of Sciences, Institute of Low Temperature and Structure Research, ul. Okólna 2, 50-422 Wrocław, Poland

autor

Maievskyi E.

• Polish Academy of Sciences, Institute of Low Temperature and Structure Research, ul. Okólna 2, 50-422 Wrocław, Poland

Bibliografia

• [1] Sheahen, T. P. (1994). Introduction to high temperature superconductivity New York: Plenum Press.
• [2] Grant, P. M. (1997). Superconductivity and electric power. IEEE Trans. Appl. Super. 7 112-132.
• [3] Teranishi, R., Izumi, T., Shiohara, Y. (2006). Highlights of coated conductor development in Japan. Supercond. Sci. Technol. 19, S4-S12.
• [4] Wilson, M. N. (1993). Superconducting magnets, London, Oxford University Press.
• [5] Carr, W. J. Jr. (2001). AC loss and macroscopic theory of superconductors London: Taylor@Francis, 2nd ed.
• [6] Chen, D. X. (2004). High-field ac susceptometer using Helmholtz coils as a magnetizer. Meas. Sci. Technol. 15, 1195-1202.
• [7] Alamgir, A. K. M., Fang, J., Gu, C., Han, Z. (2005). Square Helmholtz coil with homogeneous field for magnetic measurement of longer HTS tapes. Physica C 424, 17-24.
• [8] Jackson, J. D. (1999). Classical Electrodynamics, New York, John Wiley & Sons, 3rd ed.
• [9] Dahlquist, G., Björck, A. (2008). Numerical Methods in Scientific Computing, Philadelphia, SIAM, vol. 1, Chapter 5, 521-607.
• [10] Campbell, A. M. (1995), AC losses in high Tc superconductors. IEEE Trans. Appl. Supercond. 5 (2), 682-687.
• [11] Yang, Y., Martinez, E., Norris, W. T. (2004). Configuration and calibration of pickup coils for measurement of ac loss in long superconductors. J. Appl. Phys. 96, 2141-2149.
• [12] Nguyen, D. N., Sastry, P. V. P. S., Knoll, D. C., Schwartz, J. (2006). Electromagnetic and calorimetric measurements for AC losses of a YBa2Cu3O7−δ coated conductor with Ni-alloy substrate. Supercond. Sci. Technol. 19, 1010-1017.
• [13] Kotarski, M., Smulko, J. Assessment of synchronic detection at low frequencies through DSP-based broad and PC sound card. Proc. XIX IMEKO World Congress Fundamental and Applied Metrology, Sept. 6-11, 2009, Lisbon, Portugal, pp. 960-963.
• [14] Brandt, E. H,. Indenbom, M. (1993). Type-II superconductor strip with current in a perpendicular magnetic field. Phys. Rev. B 48 (17), 12893-12906.