TY - JOUR
T1 - The investigation of sweeping speed on the magnetization of a 2 inches diameter YBa2Cu3O7-δ thin film with the circular-type magnetic flux pump
AU - Wang, W.
AU - Semerad, R.
AU - Spaven, F.
AU - Zhang, M.
AU - Hsu, C. H.
AU - Zhong, Z.
AU - Chen, Y.
AU - Huang, Z.
AU - Coombs, T. A.
PY - 2013/2/11
Y1 - 2013/2/11
N2 - A circular-type magnetic flux pump (CTMFP) device was built to study the flux dynamics on a 2-inch-diameter YBCO thin film. This CTMFP is composed of two CTMFP coils, with each CTMFP coil containing concentric three-phase windings and a dc winding. We connected the three-phase windings to the output of a commercial inverter. By changing the output frequency of the inverter, the sweeping speed of the circular-shaped travelling magnetic wave can be changed. The connection of the phase coils follows the forward consequence, so that the circular-shaped travelling magnetic wave travels inward to the center. The output frequency f was changed from f = 0.01 to 1000.0 Hz. The YBCO sample was sandwiched between the two CTMFP coils to experience the circular-shaped travelling magnetic wave. It was found that the increase of the flux density in the center of the film is independent of the sweeping frequency. In high frequency f = 1000.0Hz, even if the waveform had changed a lot, the increment is still the same as in low frequencies.
AB - A circular-type magnetic flux pump (CTMFP) device was built to study the flux dynamics on a 2-inch-diameter YBCO thin film. This CTMFP is composed of two CTMFP coils, with each CTMFP coil containing concentric three-phase windings and a dc winding. We connected the three-phase windings to the output of a commercial inverter. By changing the output frequency of the inverter, the sweeping speed of the circular-shaped travelling magnetic wave can be changed. The connection of the phase coils follows the forward consequence, so that the circular-shaped travelling magnetic wave travels inward to the center. The output frequency f was changed from f = 0.01 to 1000.0 Hz. The YBCO sample was sandwiched between the two CTMFP coils to experience the circular-shaped travelling magnetic wave. It was found that the increase of the flux density in the center of the film is independent of the sweeping frequency. In high frequency f = 1000.0Hz, even if the waveform had changed a lot, the increment is still the same as in low frequencies.
KW - high-temperature superconductors
KW - superconducting thin films
KW - three-phase electric power
KW - type II superconductors
KW - magnetic flux
KW - coils
KW - yttrium barium copper oxide
KW - superconducting magnets
UR - http://www.scopus.com/inward/record.url?scp=84873353417&partnerID=8YFLogxK
U2 - 10.1109/TASC.2013.2237734
DO - 10.1109/TASC.2013.2237734
M3 - Article
AN - SCOPUS:84873353417
VL - 23
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
SN - 1051-8223
IS - 3
M1 - 6401174
ER -