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Superconductor Joule Losses in the Zero-Field-Cooled Maglev Vehicle

2016; IEEE Council on Superconductivity; Volume: 26; Issue: 3 Linguagem: Inglês

10.1109/tasc.2016.2528991

1558-2515

João F. P. Fernandes, Iratxe Montes, R. C. Sousa, Carlos Cardeira, P.J. Costa Branco,

Electric Motor Design and Analysis

This paper estimates for the first time the Joule losses in the YBCO superconductors in the zero-field-cooled (ZFC) Maglev vehicle. Imposing a pendulum-like movement to the vehicle and since the aerodynamic losses were taken into account in the experiments, obtained results show that the Joule losses occurred in the superconductors during the vehicle's movement. Four movement tests were completed, which allow measuring the average losses in superconductors that were responsible by vehicle's damping. A finite-element model of the vehicle showed how and why YBCO Joule losses are function of the vehicle speed. It quantifies the losses and indicates that, in the ZFC-Maglev, these are clearly reduced since the significant losses are located only in a very small layer at the superconductors' surface.