Optimizing levitation force and stability in superconducting levitation with translational symmetry

2007 ◽  
Vol 90 (4) ◽  
pp. 042503 ◽  
Author(s):  
Nuria Del Valle ◽  
Alvaro Sanchez ◽  
Enric Pardo ◽  
Du-Xing Chen ◽  
Carles Navau
Keyword(s):  
Levitation Force ◽  
Translational Symmetry ◽  
Superconducting Levitation

Enhanced stability by field cooling in superconducting levitation with translational symmetry

2007 ◽  
Vol 91 (11) ◽  
pp. 112507 ◽  
Author(s):  
Nuria Del Valle ◽  
Alvaro Sanchez ◽  
Enric Pardo ◽  
Carles Navau ◽  
Du-Xing Chen
Keyword(s):  
Translational Symmetry ◽  
Enhanced Stability ◽  
Superconducting Levitation ◽  
Field Cooling

Lateral-displacement influence on the levitation force in a superconducting system with translational symmetry

2008 ◽  
Vol 92 (4) ◽  
pp. 042505 ◽  
Author(s):  
Nuria Del–Valle ◽  
Alvaro Sanchez ◽  
Carles Navau ◽  
Du-Xing Chen
Keyword(s):  
Levitation Force ◽  
Lateral Displacement ◽  
Translational Symmetry

Enhancement of Levitation Force Characteristics in High Tc Superconducting Levitation.

1996 ◽  
Vol 62 (599) ◽  
pp. 2633-2639
Author(s):  
Yoshikatsu YOSHIDA ◽  
Zhenmao CHEN ◽  
Kazuyuki DEMACHI ◽  
Kenzo MIYA ◽  
Hiromasa HIGASA
Keyword(s):  
Levitation Force ◽  
High Tc ◽  
Force Characteristics ◽  
Superconducting Levitation

Numerical Analysis of The Levitation Force in HTSC Superconducting Levitation System of A Flywheel

1996 ◽  
pp. 1369-1372
Author(s):  
Yun Luo ◽  
Kazuyuki Demachi ◽  
Yoshikatsu Yoshida ◽  
Kenzo Miya ◽  
Hiromasa Higasa
Keyword(s):  
Numerical Analysis ◽  
Levitation Force ◽  
Levitation System ◽  
Superconducting Levitation

THE INFLUENCES OF COOLING HEIGHT ON THE LEVITATION FORCE OF SINGLE-DOMAIN YBCO BULK

2009 ◽  
Vol 23 (22) ◽  
pp. 2615-2624 ◽  
Author(s):  
JUN ZHOU ◽  
XING-YI ZHANG ◽  
YOU-HE ZHOU
Keyword(s):  
Levitation Force ◽  
Experimental Results ◽  
Single Domain ◽  
Electromagnetic Properties ◽  
Cooling Process ◽  
Ybco Bulk ◽  
Force Relaxation ◽  
Levitation Force Relaxation ◽  
Force Characteristics ◽  
Superconducting Levitation

The levitation force characteristics in a superconducting levitation device are determined not only by the geometry and electromagnetic properties of its components, but also by the initial cooling process of the superconductor. In this paper we present the experimental results of effects of the different initial cooling heights between a superconductor and magnet on the levitation force characteristics including maximum levitation force, relaxation of the levitation force and drift of the levitation force caused by the magnet vibration. It was found that the different cooling heights have large influences on the levitation force characteristics of YBCO bulk.

Levitation force of small clearance superconductor–magnet system under non-coaxial condition

2017 ◽  
Vol 31 (08) ◽  
pp. 1750075
Author(s):  
Jimin Xu ◽  
Yingze Jin ◽  
Xiaoyang Yuan ◽  
Xusheng Miao
Keyword(s):  
Levitation Force ◽  
Three Dimensional ◽  
Axial Direction ◽  
Magnetic Bearing ◽  
Fluid Film ◽  
Magnet System ◽  
Operational Conditions ◽  
Small Clearance ◽  
Liquid Rocket ◽  
Superconducting Levitation

A novel superconducting tilting-pad bearing was proposed for the advanced research of reusable liquid hydrogen turbopump in liquid rocket. The bearing is a combination of superconducting magnetic bearing and hydrodynamic fluid-film bearing. Since the viscosity of cryogenic fuel to activate superconducting state and form hydrodynamic fluid-film is very low, bearing clearance will be very small. This study focuses on the investigation of superconducting levitation force in this kind of small clearance superconductor–magnet system. Based on Bean critical state model and three-dimensional finite element method, an analysis method is presented to obtain the levitation force under such situation. Since the complicated operational conditions and structural arrangement for application in liquid rocket, center lines of bulk superconductor and magnet rotor will usually be in non-coaxial state. Superconducting levitation forces in axial direction and radial direction under non-coaxial situation are also analyzed by the presented method.

Levitation force measurement on a switchable track for superconducting levitation systems

2018 ◽  
Vol 31 (12) ◽  
pp. 125007 ◽  
Author(s):  
Tilo Espenhahn ◽  
Dietmar Berger ◽  
Ludwig Schultz ◽  
Kornelius Nielsch ◽  
Ruben Hühne
Keyword(s):  
Levitation Force ◽  
Force Measurement ◽  
Superconducting Levitation
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