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Experimental performance evaluation of a fractional power induction machine at ambient and cryogenic temperatures

Enrico Panero

Experimental performance evaluation of a fractional power induction machine at ambient and cryogenic temperatures.

Rel. Silvio Vaschetto, Joao Filipe Pereira Fernandes, Ines Santos Perdigao Peixoto. Politecnico di Torino, Corso di laurea magistrale in Ingegneria Elettrica, 2023

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Abstract:

The demand for energy-efficient solutions in electric machine design is increasing due to growing environmental concerns. Cryogenic motors offer benefits over traditional systems, especially in terms of efficiency, torque and power density. These advantages make them suitable for a wide range of applications, such as industrial, aeronautical and maritime. A 90W induction motor was tested in standard conditions and then in a liquid nitrogen environment to understand the differences in performance. The variation of the parameters of the equivalent single phase circuit from room to cryogenic temperature has been analyzed as well. The results show that in the cryogenic environment, the motor has higher mechanical and iron losses. However, a significant reduction in Joule losses was observed. This led to an overall increase in motor efficiency by +26.8%. Additionally, the motor displayed a +51.6% increase in torque and a +69.6% increase in power output under cryogenic conditions. For validation, a similar 90W induction motor was tested under the same conditions. The results from both motors aligned closely, thus reinforcing the reliability of the data. Lastly, an overview of the stray load losses in cryogenic conditions for the two motors was provided.

Relators: Silvio Vaschetto, Joao Filipe Pereira Fernandes, Ines Santos Perdigao Peixoto
Academic year: 2023/24
Publication type: Electronic
Number of Pages: 86
Subjects:
Corso di laurea: Corso di laurea magistrale in Ingegneria Elettrica
Classe di laurea: New organization > Master science > LM-28 - ELECTRICAL ENGINEERING
Ente in cotutela: Departamento de Engenharia Electrotécnica e de Computadores, Instituto Superior Técnico, University of Lisbon, Lisbon, P (PORTOGALLO)
Aziende collaboratrici: Instituto superior Técnico, Universidade de Lisboa
URI: http://webthesis.biblio.polito.it/id/eprint/29173
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