Effect of physical and geometrical parameters on vertical magnetic stiffness when a permanent magnet moves vertically above a high-temperature superconductor

With the development of high temperature superconductor (HTS) material, countries all over the world have shown great attention in HTS generator over the theoretical research and application. In this paper, a 3MW high temperature superconductor wind generator has been designed by using the RM and Maxwell 2D module of FEM software Ansoft. This design use the second generation HTS material YBCO bulk to be the permanent magnet. It break through the capability limitation of the traditional permanent magnet generation. Based on the FEM simulating, calculating and changing the parameter, the data of the HTS wind generator has been shown, such as magnet line of force, magnetic-field distribution and so on. Compared with the traditional permanent magnet generation, the HTS wind generator has a strong superiority in various aspects.

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Measuring the interaction force between a high temperature superconductor and a permanent magnet

American Journal of Physics ◽

10.1119/1.19160 ◽

1999 ◽

Vol 67 (11) ◽

pp. 1001-1006 ◽

Cited By ~ 7

Author(s):

S. O. Valenzuela ◽

G. A. Jorge ◽

E. Rodrı́guez

Keyword(s):

High Temperature ◽

Permanent Magnet ◽

High Temperature Superconductor ◽

Interaction Force

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Stable Levitation Performance of Bulk High Temperature Superconductor Magnet in Applied Magnetic Fields

Materials Science Forum ◽

10.4028/www.scientific.net/msf.787.436 ◽

2014 ◽

Vol 787 ◽

pp. 436-441 ◽

Cited By ~ 2

Author(s):

Jun Zheng ◽

Yan Feng Gou ◽

Da Bo He ◽

Rui Xue Sun ◽

Zi Gang Deng

Keyword(s):

Magnetic Field ◽

High Temperature ◽

Permanent Magnet ◽

High Temperature Superconductor ◽

Guidance Force ◽

Barium Copper ◽

Levitation Performance ◽

Maglev Transportation System ◽

Original Field ◽

Field Cooling

Bulk high temperature superconductor magnet (HTSCM) has been considered to get the better stable levitation in applied magnetic field which is not the original field-cooling magnetization (FCM) field in this paper. The vibration disturbance experiments firstly showed that a permanent magnet (PM) can suspend stably under a bulk Yttrium Barium Copper Oxide (YBCO) HTSCM. This implies that the stable levitation of one single bulk HTSCM is able to realize in the other magnetic field even from one single small PM due to the re-magnetization effect. Secondly, it is found that the HTSCM with more trapped flux produced larger guidance forces and smaller repulsion levitation forces compared with the well-recognized FCM condition of the30mm field-cooling height by the permanent magnet guideway (PMG). Especially, the HTSCM with the 0.349T trapped field achieved a maximum 9.8N guidance force, which is over impressive 7 times than the conventional FCM condition. So, it is feasible to introduce the bulk HTSCM into the HTS Maglev transportation system because this pre-magnetization method of the onboard superconductor bulks is not only helpful to improve the levitation capability and stability, but also enhance the dynamic property above the practical PMG.

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