Improvement of Magnetic Levitation Properties on Levitation System Using GdBCO Bulk Superconductors

We have developed a magnetic levitation system using a magnetic shielding effect of high temperature superconducting bulks. We have already succeeded to demonstrate principle of the levitation. In the paper, we tried to increase the levitation force. Firstly, when a ferromagnetic plate was put underside of a permanent magnet, the levitation force increased. And when the underside ferromagnetic plate was protruded from the magnet, the levitation force effectively increased furthermore. Lastly, the levitation force exceeded vehicle weight and the stable levitation became possible.