模块化无轴承磁通切换永磁电机及其控制系统研究

项目名称： 模块化无轴承磁通切换永磁电机及其控制系统研究

项目编号： No.51307086

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 电工技术

项目作者： 贾红云

作者单位： 南京信息工程大学

项目金额： 25万元

中文摘要： 无轴承电机集驱动与自悬浮功能于一体，是目前高速及超高速电机研究领域的前沿。无轴承开关磁阻电机具有结构简单、成本低的优点，但其效率和功率密度低于无轴承永磁电机；而传统的无轴承永磁电机，永磁体置于转子，电机高速运转时永磁体散热和机械牢固性问题不容忽视。本项目提出新型模块化无轴承磁通切换永磁电机，其电枢绕组、悬浮绕组及永磁体均置于定子，转子上既无绕组又无永磁体，聚转子结构坚固、高功率密度和高转速于一身。本项目旨在开发出新颖合理的定子永磁型模块化无轴承磁通切换电机结构；探索该类电机电磁参数计算、设计和分析的一般方法；分析其运行机理，建立系统动力学模型；试制原理样机，构建以dSPACE为核心的数字化控制系统实验平台；研究电机结构最优化，电枢绕组、悬浮绕组与永磁体尺寸的最佳配置，尝试总结出普遍适用于其它类型无轴承电机的一般规律和方法，提炼基础科学问题，为后续研究与实际应用奠定基础。

中文关键词： 定子永磁型；无轴承；悬浮原理；数学模型；优化设计

英文摘要： The bearingless motor is the forefront of high-speed and ultra-high-speed motor research field, combining drive and the suspended function in a body. Bearingless switched reluctance machine has the advantages of simple structure and low cost, but its efficiency and power density is worse than bearingless permanent magnet machine. The configuration of the conventional bearingless permanent magnet machine having magnets in the rotor compromises the performance due to the poor cooling and high speed limitation. The project proposes novel modular bearingless flux-switching permanent magnet machines having torque windings, suspension windings and permanent magnets in the stator, and there is no permanent magnets or windings in the rotor. The machine exhibits a bright future for high-speed drive field, offering solid rotor structure, high power desity and high speed. The purpose of the project is to develop novel structure of stator-permanent magnet modular bearingless flux-switching machine. The general method is explored for electromagnetic parameters calculation, design and analysis. The working principle of the machine is analyzed; the system dynamics model is established. Based on the real-time dSPACE, a digital drive and experimental platform of the novel machine is built. The machine structure optimization and

英文关键词： Stator-permanent magnet；bearingless；suspension mechanism；mathematical model；optimization design