A preliminary study on superconducting linear motors in high-dynamic applications

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This paper presents a preliminary study on the feasibility of second-generation high-temperature superconductors (HTS) to replace permanent magnets in linear motors (PMLM) for high-dynamic applications to improve force density. Such an application, demanding a fourth-order motion profile, is solved with an HTS linear motor (HLM) containing DC-operated HTS coils in the stator and three-phase AC commutated coils in the mover. For a comparative study, the HLM and PMLM are investigated for several design parameters through Finite-Element-Method (FEM) - operating in no-load condition - in a two-dimensional (2D) study. With DC loss of the HTS coils estimated from FEM and knowing a-priori the maximum allowed heat-load, operating limits of these coils are determined, and such thermally feasible coils deliver the required force in a further detailed design. This study shows that when using the HTS coils at 77 K, RMS flux density in the airgap and force density of the HLMs are pretty comparable to PMLMs. However, when the HTS coils are operated between 25-60 K and 20-45 % of the critical current, several coil designs deliver above 1 T RMS flux density in the airgap, and after optimization, these HLMs can potentially reduce the active volume by at least an order of magnitude and improve force density by a factor of 2 when compared to PMLMs.
Originele taal-2Engels
Titel11th International Conference on Power Electronics, Machines and Drives (PEMD 2022)
UitgeverijInstitution of Engineering and Technology (IET)
Pagina's216-223
Aantal pagina's8
ISBN van elektronische versie978-1-83953-718-9
DOI's
StatusGepubliceerd - 29 aug. 2022
Evenement11th International Conference on Power Electronics, Machines and Drives (PEMD 2022) - Hybrid Conference, Newcastle, UK, Newcastle, Verenigd Koninkrijk
Duur: 21 jun. 202223 jun. 2022

Congres

Congres11th International Conference on Power Electronics, Machines and Drives (PEMD 2022)
Land/RegioVerenigd Koninkrijk
StadNewcastle
Periode21/06/2223/06/22

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