飞轮储能用新型磁悬浮无轴承异步电机系统研究

The flywheel energy storage system is one of the effective methods to implement efficient utilization of the energy, and it has become a main research direction of the power battery. In order to effectively conquer the technical problems of the flywheel energy storage system involving high-speed operation of the driving motor, and suspension support of the flywheel rotor, a novel magnetic levitation bearingless induction motor system is proposed in this project. The magnetic levitation bearingless induction motor system, having the advantages of bearingless induction motors and magnetic bearings, can be used for suspension support and energy conversion of flywheel energy storage systems. The magnetic levitation bearingless induction motor system, which consists of two 2 degree of freedom single-winding hybrid-rotor bearingless induction motors and an axial magnetic bearing, incorporates the merits of high power density, high power factor, high reliability, low power consumption, low cost, etc. The aim of this project is to research the fundamental principle and topological structure of the novel magnetic levitation bearingless induction motor system. Thus, the general method of optimization design, performance parameters calculation, mathematical modeling, and simulation analysis will be established. Secondly, the multi-objective coordinated control of suspension, driving, and generation operation of the magnetic levitation bearingless induction motor system under different operating mode will be researched. Thirdly, the fault-tolerant performance of the magnetic levitation bearingless induction motor system will be analyzed, and the general rules of the fault diagnosis and fault-tolerant control will be developed. Finally, the dSPACE-based experiment system will be built, and the corresponding experimental researches will be developed. The successful development of the project will provide the theory and technology foundation for the novel magnetic suspension system. Moreover, it will provide beneficial help for promoting the overall research level of flywheel energy storage systems and the independent innovation capability.

飞轮储能是实现能源高效利用的有效手段之一，已成为动力电池研究领域的主攻方向。项目针对飞轮储能系统中传动电机高速运行及飞轮转子悬浮支承等技术难题，结合无轴承异步电机和磁轴承优势，提出一种新型磁悬浮无轴承异步电机系统，用于飞轮储能系统的悬浮支承和能量转换。该磁悬浮无轴承异步电机系统由两台单绕组混合转子无轴承异步电机和一台轴向磁轴承融合而成，具有高功率密度、高功率因数、高可靠性、低功耗、低成本等优点。本项目旨在研究结构新颖合理的磁悬浮无轴承异步电机基本原理与拓扑结构；建立其优化设计、性能参数计算、数学建模、仿真分析的一般方法；研究不同运行模式下系统悬浮/电动/发电运行的多目标协调控制；分析系统容错性能，揭示其故障诊断与容错控制的一般规律；搭建基于dSPACE实验系统，进行实验验证。本项目的研究，将为新型磁悬浮系统的应用提供理论和技术基础，为提升飞轮储能系统整体研究水平及自主创新能力提供有益帮助。

飞轮储能是实现能源高效利用的有效手段之一，已成为动力电池研究领域的主攻方向。项目针对飞轮储能系统中传动电机高速运行及飞轮转子悬浮支承等技术难题，提出一种新型高效的磁悬浮无轴承异步电机传动系统，用于飞轮储能系统的悬浮支承和能量转换。.经过4年研究与实践，课题组完成了既定研究计划和任务，在特定对象飞轮储能用磁悬浮无轴承异步电机(Bearingless Induction Motor，BIM)新型拓扑结构与参数设计、非线性智能控制、悬浮系统容错控制、高速转子振动抑制、无速度传感器高效运行及高品质数字控制集成系统实现等方面开展了研究工作。.相关成果获2016年江苏省科学技术三等奖1项、教育部发明二等奖1项；发表学术论文47篇，其中SCI收录24篇、EI收录13篇，申请发明专利20项，其中授权10项。课题负责人入选江苏省“333高层次人才培养工程中青年学术带头人”、江苏省“六大人才高峰”资助对象和“中国博士后特别资助”对象。主要工作如创新性成果如下：.1) 设计了一种无机械摩擦、结构简单紧凑同时能够产生径向力与轴向力的新型磁悬浮飞轮储能用BIM，并开展电磁参数优化计算，外协完成样机加工。.2) 揭示了飞轮储能用磁悬浮BIM系统多变量、非线性和强耦合特性，提出并实现了基于模型预测控制理论、滑模变结构、自抗扰理论、悬浮系统容错控制等磁悬浮无轴承异步电机系统非线性智能控制方法，实现了其高性能控制。.3) 提出了两种不同补偿准则下的BIM悬浮转子振动补偿控制策略，有效实现了转子振动抑制，提高了悬浮性能。.4) 攻克BIM系统运行控制中转速检测的难题，实现磁悬浮无轴承异步电机系统低成本无传感器高效运行。.5) 设计并开发基于TMS320 DSP的BIM系统全数字控制系统，同时，基于C语言设计开发了数字控制系统的模块化软件程序，不仅提高了系统运行效率，而且增强了程序可移植性和通用性。.本项目的研究，将为新型磁悬浮系统的应用提供理论和技术基础，为提升飞轮储能系统整体研究水平及自主创新能力提供有益帮助。