宽调速高冗余新型开关磁阻电机变绕组驱动拓扑与控制方法研究

Because rare-earth resources have high strategic and environmental significance, rare-earth-free switched reluctance motors possess important advantages for different complex environments. In order to promote the application of this motor in various industries to motivate the development of high-efficiency, energy-saving, and environmental-protection fields, novel winding-change motor drives and control strategies are investigated in this research project. It will break through the barrier of the constant-power speed range, realize the modular drive topology, and overcome technical difficulties of high-reliability fault tolerance and fault ride-through capabilities. The main research contexts are summarized as follows. Firstly, to provide the theoretical supports for the drive topology and control design, the winding-change mathematical model and nonlinear simulation model are investigated. Secondly, novel winding-change modular converter topologies are proposed to provide new paths for the system performance improvement. Thirdly, the control scheme and soft switching method are studied to explore the optimal control mechanism. Furthermore, to improve the system reliability, high-performance fault tolerance and fast fault ride-through techniques are presented. This project aims to provide the design method and control mechanism for the winding-change switched reluctance motor drive. Hence, it has important theoretical significance and engineering application value to enhance the competitiveness of this motor for applications in high-level industry, national defense, civil use, etc.

由于稀土资源具有很高的战略与环境意义，无稀土的开关磁阻电机在各种复杂环境下应用具有重要的优势。为促进开关磁阻电机在各种工业中的应用，从而促进我国高效节能环保领域的发展，本项目将研究开关磁阻电机新型变绕组驱动拓扑与控制等关键技术，以突破电机恒功率调速范围瓶颈，解决电机驱动拓扑模块化结构问题，攻克电机驱动的高可靠性故障容错与快速故障穿越技术难题。主要研究内容包括：提出开关磁阻电机变绕组数学模型与非线性仿真模型，为驱动拓扑与控制设计提供理论支撑；研究变绕组新型模块化变换器驱动拓扑，为系统性能提升开辟新路径；提出变绕组控制与在线软切换方案，探明优化控制机理；研究变绕组驱动的高性能故障容错与快速故障穿越方法，为系统可靠性的提高提供新思路。本项目旨在建立开关磁阻电机变绕组驱动领域的设计方法与控制机理，对增强开关磁阻电机在高端工业、国防及民用等领域的竞争力有着重要的理论意义和工程应用价值。

本项目研究开关磁阻电机绕组串、并联方式下的电磁特性，构建电机变绕组驱动拓扑及控制方法，对于提升开关磁阻电机性能，增强容错运行能力，拓宽开关磁阻电机应用领域，具有重要意义。首先，提出了变绕组开关磁阻电机系统，建立了变绕组电机模型，提出变绕组驱动拓扑及在线软切换控制方法，实现绕组段串并联方式的在线平滑切换，有效提升了电机调速范围。其次，提出了电机温升预测方法，对温度场分布进行快速准确预测，并结合转子强度校核与转子动力学分析，保障了变绕组开关磁阻电机的安全稳定运行。再次，为了提升变绕组开关磁阻电机系统可靠性，在所提出的驱动拓扑基础上，提出高可靠容错运行策略与考虑参数不确定性的重构信号误差校正方法，实现了故障下的容错运行，降低了转矩脉动，提升了电机输出性能。在国家自然科学基金的资助下，本项目取得了一系列成果，发表SCI期刊论文11篇，EI收录的论文1篇，授权发明专利9项。