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Fernando Jorge Monteiro Dias
Departamento de Engenharia Elétrica, Universidade Federal Fluminense, Niterói, RJ
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Guilherme Gonçalves Sotelo
Departamento de Engenharia Elétrica, Universidade Federal Fluminense, Niterói, RJ
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Rubens de Andrade Júnior
Departamento de Engenharia Elétrica, Universidade Federal do Rio de Janeiro, RJ
Keywords:
Superconducting machine, induction motor, modified motor, 2G HTS, squirrel-cage rotor
Abstract
This paper presents the performance of a trapped flux superconducting machine in 2G tapes stacked on the rotor when submitted to liquid nitrogen (LN2) temperature at 77 K. Its most relevant characteristics were obtained for comparison by a squirrel-cage induction motor of the same dimensions. In this context, the methodology of the experimental analysis and all the results obtained with the developed machine and with the induction motor at room temperature and at the temperature of liquid nitrogen will be presented. Torque results with load variation, mechanical power, electrical power, efficiency, losses, and the harmonics of the superconducting machine and the induction motor were investigated and discussed. The concept of the superconducting machine presented in this project can be applied in the future in wind energy, ship propulsion, and electric aircraft because, as will be shown, the superconducting machines achieve higher power densities than the conventional ones.
