2023/01/19 by Taketsune Nakamura, Masaaki Yoshikawa, Toshihisa Terazawa +4
Engineering · Physics and Astronomy · #Electric Motor Design and Analysis #Physics of Superconductivity and Magnetism #Superconducting Materials and Applications
paper · doi:10.1109/tasc.2023.3238293
We investigate the rotational characteristics of a 50-kW-class high-temperature superconducting induction/synchro- nous motor in superconducting and non-superconducting states. The prototype motor was first placed in liquid nitrogen, and the efficiency contour was obtained. The liquid nitrogen was then gradually removed from the motor under the partial load (10 kW) condition. This showed that continuous operation is possible even at temperatures exceeding 130 K. Furthermore, we succeeded in driving at 11% of the rated output, even at room temperature. As a result, a practical high-temperature superconducting motor that can continue to operate with reduced output even when the cooling system fails could be realized.