Calculation of AC Losses in a 500 kJ/200 kW Multifilamentary MgB 2 SMES Coil

Antonio Morandi (), Massimo Fabbri, Pier Luigi Ribani, Francesco Lo Franco, Riccardo Mandrioli, Umberto Melaccio, Daniele Magrassi, Martina Neri, Alessio Capelluto, Matteo Tropeano and Chiara Gandolfi
Additional contact information
Antonio Morandi: Department of Electrical, Electronic, and Information Engineering, University of Bologna, Viale del Risorgimento 2, 40136 Bologna, Italy
Massimo Fabbri: Department of Electrical, Electronic, and Information Engineering, University of Bologna, Viale del Risorgimento 2, 40136 Bologna, Italy
Pier Luigi Ribani: Department of Electrical, Electronic, and Information Engineering, University of Bologna, Viale del Risorgimento 2, 40136 Bologna, Italy
Francesco Lo Franco: Department of Electrical, Electronic, and Information Engineering, University of Bologna, Viale del Risorgimento 2, 40136 Bologna, Italy
Riccardo Mandrioli: Department of Electrical, Electronic, and Information Engineering, University of Bologna, Viale del Risorgimento 2, 40136 Bologna, Italy
Umberto Melaccio: ASG Superconductors—Columbus MgB 2 Unit, Via delle Terre Rosse 30, 16133 Genoa, Italy
Daniele Magrassi: ASG Superconductors—Columbus MgB 2 Unit, Via delle Terre Rosse 30, 16133 Genoa, Italy
Martina Neri: ASG Superconductors—Columbus MgB 2 Unit, Via delle Terre Rosse 30, 16133 Genoa, Italy
Alessio Capelluto: ASG Superconductors—Columbus MgB 2 Unit, Via delle Terre Rosse 30, 16133 Genoa, Italy
Matteo Tropeano: ASG Superconductors—Columbus MgB 2 Unit, Via delle Terre Rosse 30, 16133 Genoa, Italy
Chiara Gandolfi: Transmission and Distribution Department, Ricerca sul Sistema Energetico SpA, Via R. Rubattino 54, 20134 Milan, Italy

Energies, 2023, vol. 16, issue 4, 1-20

Abstract: SMES technology based on MgB 2 superconductor and cryogenic-free cooling can offer a viable solution to power-intensive storage in the short term. One of the main obstacles to the development of dry-cooled SMES systems is the heat load removal due to the AC loss of the superconductor during fast charging and discharging cycles at high power. Accurate knowledge of the amount and distribution of AC loss in the coil is of paramount importance for the sizing and the design of the cooling system and for assessing the possible operational limits of the technology. In this manuscript, the AC loss of a 500 kJ/200 kW multifilamentary MgB 2 SMES during charge–discharge cycling at full power is numerically investigated. The methodology and assumptions of the calculation are briefly resumed, and numerical results are reported and discussed in detail. In particular, the time profile and the distribution of the dissipated power all over the coil are reported. An average dissipation of 85.5 mW/m is found all over the coil during one charge–discharge cycle at full power, with a peak of 150.1 mW/m in the turns lying at the ends of the coil.

Keywords: SMES; MgB 2; multifilamentary MgB 2 tape; AC loss (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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