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Stiffness in High Temperature Superconducting Maglev System

Author: WangXingZhi
Tutor: WangJiaSu
School: Southwest Jiaotong University
Course: Theory and New
Keywords: High-temperature superconductors Maglev Magnetic stiffness characteristics Method of Moments Finite Element Method Object-Oriented Programming I
CLC: TH133.3
Type: Master's thesis
Year: 2005
Downloads: 280
Quote: 5
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Abstract


The discovery of high-temperature superconducting materials inspired physics community, mathematics and industry wide attention, the study involved the microstructure of materials, semi-macroscopic electromagnetic characteristics and macro-scale engineering applications and so on. Due to high temperature superconducting materials can operate at liquid nitrogen temperature region, with a strong anti-magnetic and magnetic flux pinning resistance, can constitute a self-stabilizing suspension system, thereby contributing to the high-temperature superconducting maglev system research. At present, around the high-temperature superconducting maglev system applications include: high-temperature superconducting magnetic bearing, flywheel energy storage, passive freedom vibration platform, gyroscopes and magnetic levitation trains. The study of these systems can be attributed to the core of high temperature superconductors and the magnetic interaction between the permanent magnets. Based on the rail and the high-temperature superconducting magnet material composition analysis of its magnetic levitation system stiffness characteristics, aimed at exposing magnetic rigidity of the law, is based on high-temperature superconducting magnet levitation rail applications to provide experimental data and theoretical analysis reference. Firstly, the way the system through experimental study investigated HTS magnetic levitation system stiffness characteristics. By changing the spatial position of the interaction, the interaction time variable, obtained with space and time corresponding to the electromagnetic characteristic parameters. Affected by the current experimental equipment limitations, can not be studied in a larger range of conditions under quasi-static magnetic stiffness characteristics, so the help of numerical analysis, prepared by a computer program to simulate the behavior of the relevant electromagnetic properties. In order to take into account the efficiency of the algorithm and versatility, this paper introduces the method of moments analysis of the electromagnetic properties of the local superconductor unit, while the overall unit integrated treatment using the finite element method. Taking into account the data before and after handling problems, this paper uses object-oriented approach to the preparation procedures code, called intermediate Moment Method module solution algorithm speed and convergence problems. Because calculation program uses a modular design concept, it is easy to consider a variety of conductive media equation, such as critical-state model, flux creep and flux flow model and Power-law model and so on. Finally, the paper prepared in accordance with the procedure code analysis of various parameters on the magnetic properties of stiffness due to numerical analysis parameters derived from the theoretical calculations and experimental results comparison, the numerical results have a certain reference value.

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CLC: > Industrial Technology > Machinery and Instrument Industry > Mechanical parts and gear > Moving parts > Bearing
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