Thermal design of superconducting cryogenic rotor: Solutions to conduction cooling challenges

Spaven, F.; Liu, Y.; Bucknall, Rwg; Coombs, Tim; Baghdadi, Mehdi

doi:10.1016/j.csite.2021.101423

Cited by 5 publications

(3 citation statements)

References 15 publications

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“…A variety of configurations have been used in the past to cryogenically cool the rotors of superconducting motors and generators [13,14]. To achieve the desired temperatures on our two 'warm gap' rotors, we have proposed using a dedicated cryocooler.…”

Section: Cryogenic Concepts For 100 Kw and 3 Mw Motorsmentioning

confidence: 99%

Additive manufacturing materials for structural optimisation and cooling enhancement of superconducting motors in cryo-electric aircraft

Lumsden,

Ludbrook,

Rogers Rehn

et al. 2023

Supercond. Sci. Technol.

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Superconducting electric motors offer the potential for low weight and high power in applications such as electric aircraft and high speed marine transport. Combined with renewably-sourced cryogenic fuels and advanced fuel cells they offer a path to zero-carbon mass transport. The proposed architectures of these extreme machines, operating at temperatures around 20K to 50K and employing very high alternating magnetic fields, require materials for the stator that are not electrically conducting and at the same time have good cryogenic structural performance. Additively manufactured (AM) materials can play a key role in these designs, and a collaboration between the Robinson Research Institute and AUT is studying the performance of a range of composite polymers in superconducting machine applications. There are significant challenges to be met, including understanding the effect of the build process on material properties at low temperatures, and also the effect of formulation changes on thermal properties.Additively manufactured metals can be employed in the rotor components, where the magnetic field fluctuations are very small for our synchronous designs. In this usage case, we can achieve dramatic reductions in the weight of the rotor assembly by minimising the number of joints and facilitating the design of multi-functional components in our helium cooled, vacuum cryostat architecture.Novel design solutions have been developed for several key components in our prototype machines and these are discussed, along with cryogenic testing results for selected additively manufactured polymers and composites. 

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Section: Cryogenic Concepts For 100 Kw and 3 Mw Motorsmentioning

confidence: 99%

Additive manufacturing materials for structural optimisation and cooling enhancement of superconducting motors in cryo-electric aircraft

Lumsden,

Ludbrook,

Rogers Rehn

et al. 2023

Supercond. Sci. Technol.

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“…9(a). Using (18), the instantaneous loss is computed at each time step. In this case, the computation time with a time step of 0.2 ms is 252 s. For the same mesh in region IV, computation time with FEA is 263 s with 11 838 degrees of freedom.…”

Section: Comparing To Feamentioning

confidence: 99%

“…For a cost-effective, safe, and reliable cooling, a conduction-cooled cryogenic solution [16] is adopted. Compared to a liquid cryogen-cooled design [17], [18], this solution 1) is mechanically more stable due to the absence of cryogenic lines; 2) does not require strong sealing for cooling connections; 3) has no risk due to leakage and sloshing of cryogen during high-dynamic motion; 4) does not require a double-wall cryostat for insulating the cryogen, which would otherwise increase the effective magnetic gap.…”

Section: Introductionmentioning

confidence: 99%

Semianalytical Modeling for Linear Motors With Conductive Media in High-Dynamic Applications

et al. 2023

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Selecting a cryogenic cooling system for superconducting machines: General considerations for electric machine designers and engineers

Yazdani-Asrami

Sadeghi

Atrey

2022

International Journal of Refrigeration

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Thermal design of superconducting cryogenic rotor: Solutions to conduction cooling challenges

Cited by 5 publications

References 15 publications

Additive manufacturing materials for structural optimisation and cooling enhancement of superconducting motors in cryo-electric aircraft

Additive manufacturing materials for structural optimisation and cooling enhancement of superconducting motors in cryo-electric aircraft

Semianalytical Modeling for Linear Motors With Conductive Media in High-Dynamic Applications

Selecting a cryogenic cooling system for superconducting machines: General considerations for electric machine designers and engineers

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