Micro SMES magnet configurations for reduced stray field applications

Abdelsalam, M. K.

doi:10.1109/77.402557

Cited by 17 publications

(4 citation statements)

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Section: Discussionmentioning

confidence: 98%

“…The compactness requiring a smaller footprint than that of a single solenoid [5] is not yet valid, because in this work we use the "gap" (see Fig. 3) as a design parameter which is much bigger than the constant at 0.05 m assumed in [5]. The bigger the gap is, the smaller the maximum field in the winding is due to the diminishing influence of the current of the surrounding coils and the larger the allowed critical current density in the coil is, the higher the stored energy efficiency and the lower the shielding effects are.…”

Section: Discussionmentioning

confidence: 99%

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Analysis and optimization of a micro SMES system using multiple parallel solenoids

et al. 2003

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The micro superconducting magnetic energy storage system is becoming a powerful tool for application in power systems. Nowadays, devices include active shielding systems instead of passive ferromagnetic shields. This calls for sophisticated analysis and design techniques able to provide satisfactory performance in terms of stored energy efficiency, reduced stray field, and/or minimal superconductor's volume. In this paper, the features of an active shielding system using multiple parallel solenoid configurations for superconducting magnets are analyzed and the results of their corresponding stray fields are compared. Two optimization strategies are briefly presented. The results using the proposed optimization strategies for magnet systems of energy capacity of 1 MJ, 5 MJ, and 10 MJ are given, respectively.Index Terms-Actively shielding, multiple parallel solenoids, optimized design, superconducting magnetic energy storage (SMES) system.

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Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Analysis and optimization of a micro SMES system using multiple parallel solenoids

et al. 2003

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“…[4]. They are mounted at a distance of their axes of 375 mm and with antiparallel field orientation (Figs.…”

Section: Energy Storagesmentioning

confidence: 99%

25 MW SMES-based power modulator

Juengst

Gehring

Kudymow

et al. 2002

IEEE Trans. Appl. Supercond.

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Based on a superconducting magnetic energy storage (SMES) a long-pulse klystron modulator has been designed for use in the TESLA Test facility (TTF) at DESY, Hamburg. A prototype with an output power of 25 MW is under development at Forschungszentrum Karlsruhe in cooperation with the office of engineering IbK at Karlsruhe. The system will deliver pulses of up to 130 kV and 1.7 ms pulse length with a flat top of 0.5% at a repetition rate up to 10 Hz. Some of this new system's main features are the highly dynamic SMES (100 T/s), a switched-mode high voltage power supply (rated 14 kV/45 A), a fast thyristor power switch and an IGCT power switch rated 2.6 kA/14 kV. This demonstration system is to serve alternatively two klystrons of 5 MW RF output or one multibeam klystron of 10 MW RF output. A first set of the system components had been arranged to form a model of the modulator and 1 MW pulses were generated. The SMES and its cryostat have undergone initial testing at dc operation. The data acquisition and control system DOOCS under development at DESY has been adapted to our computer and experimental environment.

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“…Howevcr, this solution rcquires a complicated structural suppori and it increascs the cotwuinption of superconductor by a factor of 2-3 [Z]. Also with a complex structure and the same level of tbc supcrconductor volume as toroid magnets, the inultiplc parallel solenoids with alteinating field directions [Z]- [4] prove to be another choice to reduce stray field effeciively.…”

Section: Introductionmentioning

confidence: 99%

Considerations for reducing stray field of SMES magnets

Jiang

Tian

Dai³

et al. 2000

IEEE Trans. Appl. Supercond.

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Ahsrracf-For design of A 1 MJ SMES magnet, conslderntions were givcn to reduce the strny ficld by vflrious shiclding niethods. Both active rnd passive shielding were taken into account For a single solenoid coil, nnd computations were cnrried out to compare tlic effects of shielding, the supccconductor volumcs and the overall magnet volumes. It i s shown that n singto solcnoid coil with active shielding offers an Rttrnctivc configurntion for SMES magnets. btrlex terms -SMES mngncts, strny field, active shielding, pnssivc sliielding

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Micro SMES magnet configurations for reduced stray field applications

Cited by 17 publications

References 0 publications

Analysis and optimization of a micro SMES system using multiple parallel solenoids

Analysis and optimization of a micro SMES system using multiple parallel solenoids

25 MW SMES-based power modulator

Considerations for reducing stray field of SMES magnets

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