Experiments of Superconducting Maglev Ground Transportation

Werfel, F.; Floegel-Delor, U.; Rothfeld, R.; Riedel, Thomas; Schirrmeister, P.; Koênig, R.

doi:10.1109/tasc.2016.2524471

Cited by 31 publications

(9 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In [36], more details of the SCML-01 were introduced. The HTS bulk used was a three-seeded melttextured cuboid-shaped YBCO bulk processed by ATZ GmbH (Germany) [37,38], and its size was 64 × 32 × 13 mm. Figure 7(a) shows the experimental and calculational levitation force of the HTS bulk when moving down from the FCH of 30 mm to the WH of 10 mm and then returning to 30 mm.…”

Section: Model Verificationmentioning

confidence: 99%

Vertical and lateral random vibration of high-temperature superconductor maglev under high-speed operation conditions

Huang

Ye²,

Ke³

et al. 2023

Supercond. Sci. Technol.

View full text Add to dashboard Cite

High-temperature superconductor (HTS) maglev system shows a significant potential to be applied to high-speed rail transportation based on its passive stable levitation owning to the coupling between the HTS bulks and permanent magnet guideway (PMG). And as one of the key factors to guarantee the safe and stable operation of HTS maglev, the dynamic characteristics of the HTS bulks reflecting the operation performance of HTS maglev system under high-speed running conditions should be focused on. Therefore, this paper, based on H-formulation, established a finite element model of an HTS-PMG system, and assessed its feasibility by experiments. Moreover, the random free vibration of the HTS bulk caused by guideway random irregularity at high speed is also studied by this validated model. The random vibration characteristics and temperature variation of the HTS bulk at three high speeds (600 km/h, 800 km/h, and 1000 km/h) under vertical vibration, lateral vibration, and vertical-lateral coupling vibration, respectively, are compared. The results show that at high speed, vertical vibration can only cause the fluctuation of levitation height, while lateral vibration and vertical-lateral coupled vibration will affect both lateral offset and levitation height. Compared with the mere vertical or lateral vibration mode, the levitation height attenuation and temperature rise of the coupling vibration mode is greater due to more energy loss caused by magnetic flux motion, but it can be aid in the suppression of the vibration in the vertical and lateral direction. The increase of velocity intensifies the vibration strength of the HTS bulk and increases the fluctuation of the levitation height, lateral offset, and temperature rise. However, the vibration at a certain high speed causes a limited temperature rise and thus a limited influence on the bulk performance, and the HTS bulk is still in the safe operating range at a maximum speed of 1000 km/h. These conclusions are anticipated to provide some references for the future high-speed application of the HTS maglev system.

show abstract

Section: Model Verificationmentioning

confidence: 99%

Vertical and lateral random vibration of high-temperature superconductor maglev under high-speed operation conditions

Huang

Ye²,

Ke³

et al. 2023

Supercond. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…Record trapped fields over 17 T using field cooling (FC) magnetisation was achieved in [19,20], whilst a maximum trapped field over 5 T was reported in [21] using compact and fast pulsed field magnetisation. Furthermore, bulk HTS magnets continue to be investigated as a replacement for conventional PMs in a variety of applications [22][23][24][25][26][27][28][29][30][31][32][33][34].…”

Section: Industrial Sectormentioning

confidence: 99%

Lorentz force velocimetry using a bulk HTS magnet system: proof-of-concept

Vakaliuk

Ainslie

Halbedel

2018

Supercond. Sci. Technol.

View full text Add to dashboard Cite

This paper presents a proof-of-concept of the idea of using bulk high-temperature superconducting (HTS) materials as quasi-permanent magnets that would form, in the future, an integral part of an advanced Lorentz force velocimetry (LFV) system. The experiments, calculations and numerical simulations are performed in accordance with the fundamental theory of LFV, whereby a moving metal rod passes through a static magnetic field, in our case generated by the bulk HTSs. The bulk HTS magnet system (MS) consists of two Y-Ba-Cu-O samples in the form of bulk cylindrical discs, which are encapsulated in an aluminium holder and wrapped with styrofoam. The aluminium holder is designed to locate the bulk HTS magnets on either side of the metal rod. After field cooling magnetisation with an applied field of 1.5 T at 77 K, the bulk HTS MS provides a quasi-permanent magnetic field over 240 s, enabling Lorentz force measurements to be carried out with a constant velocity of the metal rod. Two sets of Lorentz force measurements with copper and aluminium rods with velocities ranging from approximately 54-81 mm s −1 were performed. The obtained results, which are validated using a numerical model developed in COMSOL Multiphysics, demonstrate the linear relationship between the Lorentz force and velocity of the moving conductor. Finally, the potential of generating very high magnetic fields using bulk HTS that would enable LFV in even weaklyconducting and slow-flowing fluids, e.g., glass melts, is discussed.

show abstract

“…The HTS maglev has advantages over electromagnetic suspension (EMS) and electrodynamic suspension (EDS), including selfstability, low energy consumption, low operating costs, etc. In 2016, a n SS-HTS maglev train model system was created by the Superconducting and New Energy Research and Development Center, Southwest Jiaotong University [4][5][6]. The system was thoroughly detailed by Zhou et al [7] and Liu et al [8].…”

Section: Introductionmentioning

confidence: 99%

Curve Negotiation Characteristics of the Side-Suspended High-Temperature Superconducting Maglev System

Li¹,

Wang²,

Wang³

et al. 2022

MITS

View full text Add to dashboard Cite

Thanks to its superb curve negotiation characteristics, the side-suspended high-temperature superconducting (SS-HTS) maglev system boasts a great potential for high-speed transportation. The SS-HTS maglev system, however, significantly differs in suspension features from the conventional maglev system because of its unique side-suspended structure. To improve suspension performance, the field-cooling technique of superconducting bulks in the SS-HTS system was investigated through a number of experiments. To fit the experimental data, the authors proposed the mathematical models of the levitation and guidance forces as well as the optimal field-cooling position. Furthermore, a dynamic model was developed for the SS-HTS maglev vehicle operating on a curve line, and the curve negotiation characteristics were simulated for the maglev vehicle. Finally, the stability of the curve negotiation for the SS-HTS system was assessed using the Sperling index. The results show that the SS-HTS maglev vehicle can pass over bends at a certain speed. The authors also recommended the suspension parameters the maglev vehicle.

show abstract

Experiments of Superconducting Maglev Ground Transportation

Cited by 31 publications

References 27 publications

Vertical and lateral random vibration of high-temperature superconductor maglev under high-speed operation conditions

Vertical and lateral random vibration of high-temperature superconductor maglev under high-speed operation conditions

Lorentz force velocimetry using a bulk HTS magnet system: proof-of-concept

Curve Negotiation Characteristics of the Side-Suspended High-Temperature Superconducting Maglev System

Contact Info

Product

Resources

About