Static testing of a conductively-cooled, high temperature superconducting rotor for a 1.4 MW electric machine in a thermal vacuum chamber

Scheidler, Justin J.; Stalcup, Erik; Tallerico, Thomas; Mulder, Tim; Torres, William; Duffy, Kirsten P.

doi:10.2514/6.2023-4537

Cited by 1 publication

(3 citation statements)

References 13 publications

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“…The results of a first round of electrical characterization were reported in [8]. Those measurements were obtained from the same test configuration as test point A in Section 4.2.…”

Section: Electrical Resultsmentioning

confidence: 99%

“…This section is a summary of the physical assembly of the experiment and its differences from HEMM. For a more detailed discussion, the reader is referred to [8].…”

Section: Methodsmentioning

confidence: 99%

“…This paper presents the first test of HEMM's rotor where the HTS coils were conductively cooled to their rated operating temperature and then excited at their rated operating current and magnetic field. A recent paper by the authors detailed the test setup, the differences between the HEMM design and the test, and the first round of electrical measurements [8]. This paper summarizes those topics and presents a complete set of electrical and thermal measurements, along with a discussion of the data and ways to improve performance.…”

Section: Introductionmentioning

confidence: 99%

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Cryogenic vacuum chamber testing of a conductively-cooled, high temperature superconducting rotor for a 1.4 MW electric machine for aeronautics applications

Scheidler,

Stalcup,

Tallerico

et al. 2024

IOP Conf. Ser.: Mater. Sci. Eng.

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This paper presents the second ever demonstration of a superconducting rotor cooled only via conductive connection to a cryocooler, i.e., without pumped or solid cryogens. The full-scale rotor was operated statically in its intended environment – about 1e-3 torr vacuum with only conductive cooling through mechanical connections to a cryocooler contained on the rotor. Stable operation of the rotor in a representative magnetic environment was demonstrated up to its rated direct current (57.2 A) and the designed temperature limit for the superconductor (62 K). Additional electrical measurements increased confidence that the superconducting coils functioned as intended. A collection of steady state temperature distributions was measured at operating and non-operating conditions. In all but one case, the observed temperature gradient between the cold tip and superconducting coils satisfies the design but with little margin. Opportunities to reduce the gradient are identified.

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“…The results of a first round of electrical characterization were reported in [8]. Those measurements were obtained from the same test configuration as test point A in Section 4.2.…”

Section: Electrical Resultsmentioning

confidence: 99%

“…This section is a summary of the physical assembly of the experiment and its differences from HEMM. For a more detailed discussion, the reader is referred to [8].…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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