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Design of a superhigh-speed cryogenic permanent magnet synchronous motor

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11 Author(s)
Liping Zheng ; Dept. of Electr. & Comput. Eng., Central Florida Univ., Orlando, FL, USA ; Wu, Thomas X. ; Acharya, D. ; Sundaram, K.B.
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This paper presents the design and simulation of a superhigh-speed permanent magnet synchronous motor (PMSM) that operates in the cryogenic temperature of 77 K. The designed PMSM is used to drive a two-stage cryocooler for zero boil-off and long duration storage of liquid hydrogen systems. The paper addresses electromagnetic and thermal finite-element analysis, selection of materials for cryogenic applications, stress analysis, rotor dynamic analysis, and some tradeoffs used in the design. A prototype PMSM was built to verify the design methodology.

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Magnetics, IEEE Transactions on  (Volume:41 ,  Issue: 10 )