Design Aspects on Winding of an MgB2 Superconducting Generator Coil

Magnusson, Niklas; Eliassen, Jan Christian; Abrahamsen, Asger Bech; Nysveen, Arne; Bjerkli, Jarle; Runde, M.; King, Patrick

doi:10.1016/j.egypro.2015.11.406

Cited by 10 publications

(8 citation statements)

References 16 publications

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“…Although there have recently been growing interest of no-insulation coils [21]- [23], allowing direct metal-to-metal contact between turns, this may not be an option due to the long energizing times. Instead, the epoxy attached to the MgB2 wire during winding is used for electrical insulation between turns [24].…”

Section: Coil Fabrication Methodologymentioning

confidence: 99%

Fabrication of a Scaled MgB2 Racetrack Demonstrator Pole for a 10-MW Direct-Drive Wind Turbine Generator

Magnusson

Eliassen

Abrahamsen

et al. 2018

IEEE Trans. Appl. Supercond.

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Abstract-Field windings made of MgB2 wires or tapes are considered for their potential to reduce volume, weight and cost of large offshore wind turbine generators. To gain experience of how to use this relatively new material in full-scale generators, tests of different winding methodologies and techniques are needed. In this paper, we describe in detail the steps used to wind a racetrack coil with a length of 1 m and a width of 0.5 m out of 4.5 km of MgB2 superconducting tape. The width corresponds to a full-scale pole of a 10 MW generator, whereas the length of the straight section is shorter than the corresponding full-scale pole. The coil was built up of 10 double pancake coils. Each double pancake coil was wet-wound using a semi-automatic winding process, where Stycast 2850 was applied directly to the MgB2 tape without any other dedicated electrical insulation. The strengths and weaknesses of the winding process are discussed and compared to the dry-winding method. 

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Section: Coil Fabrication Methodologymentioning

confidence: 99%

Fabrication of a Scaled MgB2 Racetrack Demonstrator Pole for a 10-MW Direct-Drive Wind Turbine Generator

Magnusson

Eliassen

Abrahamsen

et al. 2018

IEEE Trans. Appl. Supercond.

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“…Among them, superconducting magnet (Klyukhin et al, 2019) technologies mainly include strong magnetic field magnets, magnetic levitation magnets and superconducting induction heating. On the other hand, superconducting strong electric applications mainly include superconducting cables (Arai et al, 2019), superconducting current limiters (Kar et al, 2012), superconducting transformers (Chen et al, 2018), superconducting generators (Magnusson et al, 2015), superconducting motors (Du et al, 2020) and superconducting energy storage (Zhu et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Finite element simulation and structure optimization of HTS solenoid

et al. 2022

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When the current passing through a high temperature superconducting (HTS) coil that exceeds a critical value, the properties of the materials which make up the coil will fail, generating large amounts of heat and even causing serious accidents. Aiming at the above safety problem, this paper took three solenoid magnets with different structures as the object, and conducted a simulation study on their electromagnetic performance through finite element method (FEM). The magnetic field intensity H was taken as the dependent variable of the control equations of the physical field. With the aid of the partial differential equation (PDE) interface of the simulation software used, the control equations were easily constructed. The pancake coil wound by many turns of ribbon conductors was abstracted as a bulk-like conductor with the same cross-sectional area. The main idea of this equivalent replacement is to simplify the internal structure of the device without affecting its electromagnetic behavior, which can accelerate the convergence speed of the simulation process and reduce the CPU burden. Models of solenoid magnets with rectangular, trapezoidal and inverted trapezoidal cross sections were established by stacking many pancake coils. The simulation results corresponding to these models show that the solenoid magnet with trapezoidal cross-section has the largest critical current and most uniform density distribution. Such advantages not only reduce the risk of superconducting material failure due to overheating at both ends, but also fully exploit the current carrying capacity of the coil in the middle area of the solenoid.

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“…Superconducting windings can produce strong magnetic fields due to their ability to carry high current without any loss compared to copper (Cu) conductors. This means that using direct-drive machine design, more compact, lighter, more efficient, and more powerful wind turbine generators can be realized [2,5,11,12,14]. Several reviews have been published on the use of different types of superconductors for wind turbine application [6,15].…”

Section: Introductionmentioning

confidence: 99%

“…The INWIND.EU project, funded under the FP7 framework, reported the design and winding aspects of an MgB2 racetrack coil for a direct-drive 10-MW wind turbine generator pole [2,8,13]. Sarmiento et al reported the design and evaluation of a fullscale MgB2 coil (one double pancake) for the 10-MW SUPRAPOWER wind turbine generators [10].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of a solid nitrogen impregnated MgB₂ racetrack coil

Patel

Qiu

Mustapić

et al. 2018

Supercond. Sci. Technol.

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To develop powerful wind turbine generators using superconducting technology, highperformance superconducting racetrack coils are essential. Herein, we report an evaluation of a multifilamentary magnesium diboride (MgB2) conductor-based racetrack coil cooled and impregnated simultaneously by solid nitrogen (SN2). The coil was wound on a copper former with 13 mm winding width, an inner diameter of 124 mm at the curvature, and 130 mm length of the straight section. An in situ processed S-glass-insulated 36-filament MgB2 wire was wound on the former in two layers with

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Design Aspects on Winding of an MgB2 Superconducting Generator Coil

Cited by 10 publications

References 16 publications

Fabrication of a Scaled MgB2 Racetrack Demonstrator Pole for a 10-MW Direct-Drive Wind Turbine Generator

Fabrication of a Scaled MgB2 Racetrack Demonstrator Pole for a 10-MW Direct-Drive Wind Turbine Generator

Finite element simulation and structure optimization of HTS solenoid

Evaluation of a solid nitrogen impregnated MgB₂ racetrack coil

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Design Aspects on Winding of an MgB2 Superconducting Generator Coil

Cited by 10 publications

References 16 publications

Fabrication of a Scaled MgB2 Racetrack Demonstrator Pole for a 10-MW Direct-Drive Wind Turbine Generator

Fabrication of a Scaled MgB2 Racetrack Demonstrator Pole for a 10-MW Direct-Drive Wind Turbine Generator

Finite element simulation and structure optimization of HTS solenoid

Evaluation of a solid nitrogen impregnated MgB2 racetrack coil

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Product

Resources

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Evaluation of a solid nitrogen impregnated MgB₂ racetrack coil