2014年8月10日 Tremendous Enhancement of Torque Density in HTS Induction/Synchronous Machine for Transportation Equipments Applied Superconductivity Conference 2014 (ASC2014) T. Nakamura, Y. Itoh, M. Yoshikawa, T. Nishimura, H. Shimura, T. Ogasa, N. Amemiya, Y. Ohashi, S. Fukui, M. Furuse