4.6 Article

Experimental Assessment of Cryogenic Cooling Impact on Induction Motors

期刊

IEEE TRANSACTIONS ON ENERGY CONVERSION
卷 37, 期 4, 页码 2629-2636

出版社

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TEC.2022.3183939

关键词

Cryogenics; electric machines; induction motor; electromagnetic measurements; modeling; testing; loss measurement; performance; skin effect; temperature impact

资金

  1. National funds through the FCT- Foundation for Science and Technology
  2. I.P, through IDMEC,under LAETA Project [UIDB/50022/2020]

向作者/读者索取更多资源

This work presents an experimental assessment of the influence of cryogenic cooling on a conventional induction motor. The study finds that when submerged in liquid nitrogen, the motor's performance parameters vary and it achieves higher efficiency and torque.
In this work, an experimental assessment of the influence of cryogenic cooling in a conventional induction motor is presented. The performance of a fractional kilowatt induction motor is evaluated when submerged in liquid nitrogen. Using the single-phase equivalent electric circuit, the influence of the temperature and skin-effect is analyzed in the variation of the machine's parameters, under ambient and cryogenic conditions. Also, the variation of the iron core and mechanical losses are evaluated. An analytical methodology is proposed to estimate the change of motor performance under cryogenic conditions. For the analyzed induction motor, measurements are performed to verify the predicted machine performance. The experimental tests in cryogenic conditions show the possibility of achieving higher efficiency levels with more than double the nominal torque. Also, due to the cryogenic environment, there was no thermal constraint in the operation of the induction motor.

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