【作者】 宋波；

【导师】 曾佑文；

【作者基本信息】 西南交通大学 ， 机械设计及理论， 2009， 硕士

【摘要】 能源问题是21世纪人类所面临的重大课题之一。在不断开发新能源的同时,为了更有效地利用现有的能源,就需要发展先进节能技术和储能技术。早在20世纪50年代就有人提出了利用高速旋转的飞轮来储存能量,动能储存方式简单,并显示出储能密度高、功率大、效率高、寿命长、无污染等优点,但由于当时技术条件的限制,一直未取得突破性的进展。90年代以来,磁悬浮技术突飞猛进给飞轮储能带来了新的希望。飞轮储能性能的好坏关键取决于支撑转子的轴承,高温超导磁悬浮轴承是一种利用超导体抗磁性和钉扎作用使转轴悬浮于空中,实现无机械接触的一种新型高性能轴承,因而具有一般传统轴承所无法比拟的优越性。本文首次提出一种具有倾斜环形永磁轨道的新型高温超导磁悬浮轴承研究方案,采用高温超导块材与环形永磁轨道组成,具有极高的悬浮效率和稳定性。针对于圆柱形超导体-环形永磁轨道悬浮系统,基于临界态模型和电流矢量位,采用了采用有限单元法对超导体内的电流分布进行分析、求解,根据洛仑兹力公式进而得到悬浮力和导向力等重要参数。在此基础上,开发了方便、快捷应用程序,利用该程序对不同参数的新型高温超导磁悬浮轴承悬浮性能进行定量分析研究,证明该研究方案的可行性和优越性,结合这些结果可为这类轴承的定量评价提供参考。更多还原

【Abstract】 In the 21st century, energy issues faced humanity one of the major issues. At the same time in the continuous development of new energy sources, in order to using more efficient of available energy that will require the development of advanced energy-saving technology and energy storage technology. As early as 50 years in the 20th century, someone said that using high-speed rotation of the flywheel store energy, kinetic energy storage is simple and shows a high energy density, power, efficiency, long life and no pollution etc. Then, but the technical problem, flywheel store energy has not been achieved a great of breakthrough.Since the 90’s, With the development of maglev technology, that the flywheel energy storage has brought a great of development. Flywheel energy storage performance depends critically on the support of the rotor bearings, High-temperature superconducting (HTS) maglev bearing is use of superconductors anti-magnetic and pinning effect that shaft suspended in the air, it is formed by the stator and rotor that a new high-performance bearings don’t mechanical contact, hence high-temperature superconducting has conventional bearings unmatched superiority.For the first time, Paper present a new research program at home and abroad that a flywheel energy storage devices of high-temperature superconducting magnetic bearing. It uses high-temperature superconductor bulk materials as a stator and a circular permanent magnet guide as a rotor in the horizontal direction with a certain tilt angle of the new high-temperature superconducting bearings, Thus ensuring the high-temperature superconducting magnetic bearing radial and axial stability.Response in the cylindrical superconductors and permanent magnetic guide suspension systems, Based on the critical state model and current vector potential, the electric current distribution were calculated by the finite element method(FEM), according to Lorentz force formula and then get levitation and guidance force of the important parameters. On this basis to develop a convenient, fast applications, using the program with different parameters of the new high-temperature superconducting magnetic bearing suspension performance was calculated, The study proved the feasibility and superiority, based on the results of these calculations which can be quantitative evaluation for these bearings provide a reference.更多还原