Trial Manufacture of Small HTS Magnet Using 2G Tapes for Maglev Train Application

Ogata, Masafumi; Mizuno, Katsutoshi; Arai, Yuki; Hasegawa, Hitoshi; Sasakawa, Takashi; Nagashima, K.

doi:10.1109/tasc.2010.2091487

Cited by 13 publications

(6 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As mentioned above, the development of high-temperature superconducting magnets for maglevs seems to have also started in China; however, RTRI has been paying attention to rare-earth-based high-temperature superconducting wires, which are expected to have a high critical current density in magnetic fields and low cost, from an early stage and has been intensively researching and developing this application. Before the above research in China, RTRI made a prototype of a high-temperature superconducting magnet operable without a refrigerator [16], followed by introducing of a superconducting coil winding machine, and started full-scale development. As a result, we devised RTRI's original method using thermoplastic resin for coil molding after winding and repeated evaluation tests to establish a coil manufacturing method without performance deterioration.…”

Section: Basic Research On Maglevmentioning

confidence: 99%

<b>Research and Development of Maglev and Application of Related Technologies to Conventional Railways</b>

Nagashima

Sasakawa

2021

QR of RTRI

View full text Add to dashboard Cite

show abstract

Section: Basic Research On Maglevmentioning

confidence: 99%

<b>Research and Development of Maglev and Application of Related Technologies to Conventional Railways</b>

Nagashima

Sasakawa

2021

QR of RTRI

View full text Add to dashboard Cite

show abstract

“…Trains so far have generally used LTS levitation magnets, but the move from prototypes to routine day-by-day operation will clearly make great demands on ruggedness and reliability which will surely favor a higher operating temperature. Full sized BSCO magnets were successfully tested onboard a maglev train in 2005 [47] and a smaller magnet made from 2G coated YBCO coated tape was tested recently [48].…”

Section: Fieldmentioning

confidence: 99%

100 Years of Superconductivity and 50 Years of Superconducting Magnets

Wilson

2012

IEEE Trans. Appl. Supercond.

View full text Add to dashboard Cite

This review celebrates the centenary of Kamerlingh Onnes' discovery of superconductivity and also the 50th anniversary of the first conference to discuss superconducting magnets. Our growing understanding of superconductivity and its relationship with magnetic fields is outlined, together with the technical high field superconductors, which first made magnets possible. Engineering problems in utilizing these new materials and the applications which they made possible are described. Just 75 years after Kamerlingh Onnes' discovery, high temperature superconductivity HTS was discovered, opening up a new range of fields and temperatures for magnets. The difficulties of making these new materials into practical magnet conductors are outlined. Some applications of HTS are described and speculations are offered about those areas where it is most likely to succeed in future.

show abstract

“…Due to its great quench stability and high current density, the NI coil has been widely applied on high field static magnets [4][5][6][7][8][9][10]. The world record of high Railway Technical Research Institute (RTRI), Japan [20][21][22]. In the maglev system, both ripple magnetic field generated by ground coil during the launching/braking process and eddy current generated in metal cryostat/cold shield by vibration can provide non-ignorable AC magnetic field, which can lead to dramatic AC magnetization loss in NI coil.…”

Section: Introductionmentioning

confidence: 99%

Magnetization loss of no-insulation coil for an electrodynamic suspension system

Wang

Sheng

Zhong

et al. 2021

Supercond. Sci. Technol.

View full text Add to dashboard Cite

A high-temperature superconducting no-insulation (NI) coil, with its self-protection property, high engineering current density and unique demagnetization property, becomes a potential candidate for an electrodynamic suspension (EDS) system. Compared with the applications in high field magnets, the NI coil used in the EDS system is considered as working in a dynamic state, the magnetization loss generated in the NI coil is essential for the design of a cryogenic system. This paper presents the study on AC magnetization loss of NI coils by both numerical and experimental methods. Firstly, a 3D finite element numerical model representing the full geometry of the NI coil is built to analyse the effect of field frequency, field magnitude, as well as the radial characteristic resistance. Then, systematic discussions are conducted to figure out the working mechanism of NI coils. Finally, a calibration-free method testing platform is installed to validate the numerical model, and a modified model is proposed to represent the non-uniform radial characteristic resistance caused by stress distribution. The conclusions of this paper will be used in the future optimization of NI coils and the cryogenic design of the EDS system.

show abstract

Trial Manufacture of Small HTS Magnet Using 2G Tapes for Maglev Train Application

Cited by 13 publications

References 3 publications

<b>Research and Development of Maglev and Application of Related Technologies to Conventional Railways</b>

<b>Research and Development of Maglev and Application of Related Technologies to Conventional Railways</b>

100 Years of Superconductivity and 50 Years of Superconducting Magnets

Magnetization loss of no-insulation coil for an electrodynamic suspension system

Contact Info

Product

Resources

About