Speaker
Description
Abstract:
Trapped magnetic flux by high temperature superconducting tape stacks manufactured by ASCG at University of Cambridge allowed to reach the current world record of 17.7 T [1]. Despite of this undisputed success there are different challenges for such tape-stacks to operate in field cooled DC conditions [1], pulse conditions [2] as well as AC conditions, where demagnetization of trapped magnetic flux may reduce applicability of the stacks in electrical motors [3,4].
We will discuss solutions to achieve the best performance for applications of such novel high temperature superconducting tape stacks in DC, transient and AC conditions.
Acknowledgement:
This research is financially supported partially by the European Union’s Horizon 2020 research innovation program under grant agreement No. 7231119 (ASuMED “Advanced Superconducting Motor Experimental Demonstrator”) and also by EPSRC grant No. EP/P000738/1 “Development of superconducting composite permanent magnets for synchronous motors: an enabling technology for future electric aircraft”.
References:
[1] Patel A, Baskys A, Mitchell-Williams T, McCaul A, Coniglio W, Hänisch J, Lao M, Glowacki B A, “A trapped field of 17.7 T in a stack of high temperature superconducting tape,” Superconductor Science and Technology, 31, 9 (2018).
[2] Patel A and Glowacki B A, “Enhanced trapped field achieved in a superconducting bulk using high thermal conductivity structures following simulated pulsed field magnetization”, Superconductor Science and Technology, 25, (12) 125015 (2012).
[3] Baskys A, Patel A and Glowacki B A, “Measurements of crossed-field demagnetization rate of trapped field magnets at high frequencies and below 77 K”, Superconductor Science and Technology, 31, 065011 (2018).
[4] Climente-Alarcon V, Smara A, Mineev N, Glowacki B A and Reis T, “Novel Architecture of Trapped-Field Superconducting Rotor for Aircraft Applications", Superconductor Science and Technology, Submitted: SUST-103237.
