&lt;b&gt;Development of a Real-scale REBCO Coil for the Demonstration of a Magnetomotive Force of 700 kA&lt;/b&gt;

Mizuno, Katsutoshi; Sugino, Motohiko; Tanaka, Minoru; Ogata, Masafumi

doi:10.2219/rtriqr.58.4_318

Cited by 6 publications

(4 citation statements)

References 6 publications

(7 reference statements)

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“…In this study, a noninductive manufacturing method was used for the PCS; thus, the L PCS is also equal to zero. For this magnet system, the I PCS is limited to less than 5 A; thus, the minimum required R PCS can be calculated by the voltage U PCS across the magnet at an average ramping rate of 0.025 A/s, as expressed by equation (1). Based on the copper resistivity at 110 K, the calculated length of the PCS is approximately 1300 mm.…”

Section: Hts Pcsmentioning

confidence: 99%

“…REBCOcoated conductors have a high transition temperature, and their current density in high magnetic field environments is superior to that of other superconductors. For example, the current density of REBCO-coated conductors at 40 K is almost the same as that of Nb-Ti conductors at 4 K [1]. A high operating temperature offers several advantages, namely, the magnets can be cooled by a cryocooler without liquid helium.…”

Section: Introductionmentioning

confidence: 99%

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Design, Fabrication and Test of a High- Temperature Superconducting Linear Synchronous Motor Mover Magnet Prototype for High-Speed Maglev

Zhang

Mao

2022

IEEE Access

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High-temperature superconducting linear synchronous motors (HTS-LSMs) have many advantages, such as high thrust density, high efficiency, large electromagnetic gap, and liquid-heliumfree refrigeration, because of the high operating temperature and good mechanical tolerance of high-temperature superconductors. Therefore, HTS-LSMs have broad application prospects in the field of high-speed maglev propulsion system. To study the dynamic stability of an HTS-LSM, this work aims at designing, fabricating and testing an HTS magnet as the mover magnet of an HTS-LSM. The HTS mover magnet is a monopole HTS magnet, and it is designed according to electromagnetic, structural, and thermal properties and the measurement system. A thermal model and structural dynamics model were constructed to analyze the dynamic refrigeration performance and structural dynamics characteristics of the HTS magnet. The validation of these models was verified by experimental results. The HTS coils in the HTS mover magnet were fabricated using epoxy impregnation with primary and secondary curing processes. Static tests and dynamic tests were performed to comprehensively study the characteristics of the HTS magnet. The magnet could be cooled to below 20 K and could be excited to 246 A with a certain temperature margin. An electromagnetic simulator was designed and manufactured to realize the off-line simulation of the actual operation of the HTS-LSM. The dynamic experimental results show that the HTS magnet could withstand a vibration environment of up to 18 gRMS without quenching and structural damage. This study provides useful information for the design and application of an HTS-LSM.INDEX TERMS Maglev, high-temperature superconducting linear synchronous motor (HTS-LSM), design, fabrication, test.

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Section: Hts Pcsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design, Fabrication and Test of a High- Temperature Superconducting Linear Synchronous Motor Mover Magnet Prototype for High-Speed Maglev

Zhang

Mao

2022

IEEE Access

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“…Since the development of the REBCO magnet for the electromagnetic vibration test has been introduced in our previous paper [3], we mention only important features here: the configuration of the magnet and the specifications of the outer vessel. A shorter electromagnetic vibration test was carried out to confirm that the induced electromagnetic force was equivalent to that found in an actual maglev system.…”

Section: Electromagnetic Vibration Testmentioning

confidence: 99%

<b>Voltage Noise Measurement of a REBCO Superconducting Coil During Electromagnetic Vibration Tests on a Ground Coil</b>

2021

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In electromagnetic vibration tests, a ground coil is excited under the strong magnetic field of a superconducting magnet. Since the vibration mechanisms in the test are the same as for actual maglev (magnetic levitation) running conditions, electromagnetic vibration tests are therefore an important durability test for ground coils. We carried out electromagnetic vibration tests with a superconducting magnet with REBCO wire, which is a high-temperature material. This paper also proposes a novel monitoring and protection method for REBCO magnets.

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“…This means that the GFRP plate on the upper and lower surfaces of the conventional coil were replaced with a meshed copper plate while the HTS wire and the cooling plate were fixed with a thermoplastic resin to improve heat conductivity (Fig. 6 (b)) [10,11]. In order to prevent the deformation and movement of the HTS wire, thermoplastic resin was also used for the GFRP plate in the coil.…”

Section: New Hts Coils Fixed With Thermoplastic Resinmentioning

confidence: 99%

<b>Development of Superconducting Magnetic Bearing Capable of Supporting Large Loads in Flywheel Energy Storage System for Railway Applications</b>

et al. 2018

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A superconducting magnetic bearing (SMB) has been developed with high temperature superconducting (HTS) coils and bulks for a flywheel energy storage system (FESS). The FESS equipped with the SMB was tested at the mega photovoltaic power plant test site in Yamanashi Prefecture. The SMB with both rotor and stator made of superconducting material, was capable of supporting the flywheel weighing 4000 kg without any contact and has so far remained in stable operation for 5000 hours. A further increase in storage capacity is required for the FESS to be applicable to railways as a system for preventing cancellation of regenerative braking. This paper describes the development of a SMB capable of supporting large 147 kN loads using a new type coil structure for the improvement of FESS storage capacity.

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<b>Development of a Real-scale REBCO Coil for the Demonstration of a Magnetomotive Force of 700 kA</b>

Cited by 6 publications

References 6 publications

Design, Fabrication and Test of a High- Temperature Superconducting Linear Synchronous Motor Mover Magnet Prototype for High-Speed Maglev

Design, Fabrication and Test of a High- Temperature Superconducting Linear Synchronous Motor Mover Magnet Prototype for High-Speed Maglev

<b>Voltage Noise Measurement of a REBCO Superconducting Coil During Electromagnetic Vibration Tests on a Ground Coil</b>

<b>Development of Superconducting Magnetic Bearing Capable of Supporting Large Loads in Flywheel Energy Storage System for Railway Applications</b>

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