Quench detection method for superconducting magnets with a phase difference measurement system based on multiple-correlation

Wang, Teng; Hu, Yanlan; Fu, Peng; Liu, Huajun

doi:10.1016/j.fusengdes.2021.112658

Cited by 3 publications

(2 citation statements)

References 18 publications

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“…However, the quench and its detection method are still the main issues and tough challenges that restrict the growing application of superconducting materials, especially for high-field magnets. The resistive voltage quench detection method, as a universally used technique, has been widely studied for lowtemperature superconducting (LTS) systems [5][6][7][8][9], which is performed by voltage taps to measure abnormal voltage signals. High temperature superconducting (HTS) materials have abundant application prospects due to their higher cryogenic stability and optimum performance indicators such as much higher critical current, operation temperature and magnetic field.…”

Section: Introductionmentioning

confidence: 99%

A visual and full-field method for detecting quench and normal zone propagation in HTS tapes

Wang¹,

Guan²,

Chen³

et al. 2021

Supercond. Sci. Technol.

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A fast and effective quench detection method is especially challenging in the development of high-field high-temperature superconducting (HTS) magnets for their safe operations and reliably releasing the stored energy during a quench. The occurrence and propagation of a quench are often accompanied by strong thermal and magneto-mechanical responses within superconducting magnets. Aiming to detect a quench in the whole process and capture the thermoelastic behavior associated with it, a new detection technique with a visual and full-field perception based on the digital image correlation (DIC) method is proposed in the present study. The experiment of a quench triggered thermally by a local spot heater is conducted for a YBCO coated conductor tape in a cryogenic chamber. The evolution and characteristics of the full-field strain in the HTS tape during the processes of a non-quench, a quench occurrence and quench propagation are intuitively presented with experimental observations. For the comparison purpose, the conventional quench detection methods by monitoring temperature and voltage signals during a quench are also utilized experimentally. The results verify the visual and full-field quench detection method which uses a criterion of thermoelastic strain-rate for the quench occurrence and the evolution of strain contours for the normal zone propagating aspect. Additionally, a numerical quench model of coupled thermoelasticity to simulate the experiment is established and solved with the aid of Comsol multiphysics software. The quantitative results are in good agreement with the experimental measurements to prove the reliability and availability of the developed detection method. Since the DIC method is non-contact and insensitivity to intense electromagnetic interferences, it is expected to provide a new technique on quench issues and some basic measurements on strain/stress behaviors in extreme environments of high-field HTS magnets in the future.

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Section: Introductionmentioning

confidence: 99%

A visual and full-field method for detecting quench and normal zone propagation in HTS tapes

Wang¹,

Guan²,

Chen³

et al. 2021

Supercond. Sci. Technol.

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“…The purpose of this research is to conduct a steel rolling study medium carbon with a treatment temperature above recrystallization, rolling rate, sintering time, cooling medium as an effort to develop and design new innovations about steel structures being rolled [12]. The purpose of this research is to conduct a study of rolling using medium carbon steel with a treatment temperature above recrystallization, rolling rate, sintering time, cooling media as an effort to develop and design new innovations about steel structures being rolled undergoing the rolling process with treatment of rolling rate, sintering time and air conditioning media [13]. The purpose of the urgency of the research is that the pursuit of this research is carried out because of the urgent need to find a solution to the problem is that steel is widely used in various needs in the development of technology in various fields [14].…”

Section: Introductionmentioning

confidence: 99%

Effect of Dredging Rate, Sintering Time, Cooling Media on Corrosion Results of Carbon Steel Dredging

Irawan¹

2021

ijseit

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Metal reinforcement that has an impact on improving mechanical properties can occur in various ways, including by strain hardening mechanisms, solid solutions, second phase, prespitations, disperse, grain refinement and texture. In recent years, another method has been developed to obtain good mechanical properties without adding alloy elements, namely by the method of comprehensive plastic deformation (Severe Plastic Deformation). The purpose of this research is to conduct a study of rolling using medium carbon steel with a treatment temperature above recrystallization, rolling rate, sintering time, cooling media as an effort to develop and design new innovations about steel structures being rolled. The study of developing rolling techniques that can be applied in industry and can be applied as learning material / media in higher education requires structured research stages. The best impact value from this temper process is a temperature of 550 ° C for 1 hour where the impact value is 1.58 J / mm² with air conditioning media. In the rolling process above the recrystallization temperature 800 ° C deformation 20% the impact value is 1.7 J / mm² where the toughness indicates a ductile fracture while the deformation is 10% the impact value

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Progress of Quench Detection for CFETR TF Prototype Coil

Wang,

Hu,

Wen

et al. 2024

IEEE Trans. Appl. Supercond.

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Quench detection method for superconducting magnets with a phase difference measurement system based on multiple-correlation

Cited by 3 publications

References 18 publications

A visual and full-field method for detecting quench and normal zone propagation in HTS tapes

A visual and full-field method for detecting quench and normal zone propagation in HTS tapes

Effect of Dredging Rate, Sintering Time, Cooling Media on Corrosion Results of Carbon Steel Dredging

Progress of Quench Detection for CFETR TF Prototype Coil

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