轴向永磁辅助磁阻型复合转子高速电机及其无位置传感器控制技术研究

High-speed machine technology is developing toward high power, high-performance and high reliability. Due to the property about its high frequency, high speed and high power density, the higher requirements for high speed machine structure and the analysis and design method are put forward. However, there are some problems about the rotor protection, higher loss and dissipation heat difficulty of high speed permanent magnet synchronous machine, the low efficiency and low power density of high speed reluctance machine, which have not yet been fully developed in many field of high speed. In order to solve the inherent problems of above two kinds of the high-speed machine and improve the power density, a axial PM assisted reluctance high speed machine of composite rotor and its intelligent sensorless control strategy is proposed in this project. This kind of high speed machine system has the peculiar advantages both permanent magnet synchronous machine and reluctance machine, has broad application prospects. Stating from special electromechanical energy conversion mechanism, several crucial basic issues will be intensive studied, including the motor topology structure, the optimization design of composite rotor and intelligent sensorless control strategies and so on, the complete theoretical system and the analysis and design methods about this machine are obtained. The project study not only has important engineering application, but also its theoretical research achievements and the solution of scientific problems has a very important scientific significance.

高速电机技术正向着大功率、高性能和高可靠方向发展。其高频、高速和高功率密度的三高属性对电机的结构和分析设计方法提出了更高的要求。目前广泛应用的高速永磁电机转子的保护、损耗大和散热困难等难题以及高速磁阻电机效率低、噪声大和功率密度偏低问题已不能很好满足其在许多高速领域中的应用。为了解决上述两种高速电机的固有问题，并提高电机功率密度，本项目提出一种轴向永磁辅助磁阻型复合转子结构的新型拓扑结构高速电机及智能无位置传感器控制系统。该种电机系统兼具了高速永磁电机和高速磁阻电机的特有优势，应用前景广阔。本项目将从其特殊的机电能量转换机理出发，拟对该种电机拓扑结构、复合转子优化设计和智能无位置传感器控制策略等关键基础问题进行深入研究，形成该类电机及其控制系统完整理论体系和分析设计方法。该项目研究不仅具有重要工程应用价值，且其理论研究成果和所解决科学问题，亦具有非常重要的科学意义。

基于高速电机行业发展的急需以及目前高速电机研究所面临的现实问题，针对高速磁阻电机和高速永磁电机的固有缺陷，申请提出并研究一种新型特殊结构的高速电机：轴向永磁辅助磁阻型复合转子高速电机（High Speed Machine With Composite Rotor of Axial PM Assisted Reluctance，简称HSM-CR）。电机由两组磁极相关的6/4双凸极定/转子结构组成，两侧转子周向错位15°的安装方式可实现增加输出转矩，降低转矩脉动作用。在详细介绍电机拓扑结构及运行原理基础上，推导其数学模型、建立轴向磁通串联结构的三维有限元模型，深入分析电机电磁性能、转子动力学、损耗以及温升等问题，通过仿真验证无位置传感器控制方法可行性。最后试制一台3kW样机，试验验证新结构电机设计原理和理论分析的正确性。通过理论与实验研究，形成了该种电机及其控制系统较为完整的理论体系和分析设计方法。.结合该项目的研究，培养博士3名，硕士10名；在国内外重要学术刊物及国际会议上发表论文12篇，其中被SCI收录4篇，EI期刊收录2篇，EI会议收录3篇；已录用待发表3篇。获授权国家专10项，其中发明专利3项，实用新型专利7项。.本项目研究不仅对推动新结构HSM-CR电机的实际应用具有重要工程应用价值，而且所解决的学术问题亦具有重要的科学意。