电机气隙磁场调制统一理论及其典型应用

General Airgap Field Modulation Theory for Electrical Machines and Its Typical Applications

电机气隙磁场调制统一理论将单元电机统一抽象为"励磁源—调制器—滤波器"3个基本要素的级联,能够在统一的框架下分析与设计不同类型、不同原理的电机,为电机性能分析计算及拓扑结构创新等提供了全新的视角和有力的工具,成为近年来电机学科的研究热点之一。该文回顾了磁场调制概念的提出和磁场调制技术的发展过程,介绍电机气隙磁场调制统一理论的基本框架,并对其在电机运行原理、磁场调制行为等定性分析,转矩特性、损耗分布等定量计算,以及拓扑结构衍变、电机参数优化等创新指导方面的典型应用进行综述,系统地归纳总结了磁场调制统一理论对电机学科发展的推导和促进作用。最后,对气隙磁场调制统一理论未来研究与发展方向进行展望。

The general airgap field modulation theory normalizes a unit machine into a cascade of three basic elements, namely the excitation source, modulator and filter,analyzing almost all electric machines with different types and principles in a unified framework, offering a brand-new perspective and powerful tool for performance analysis and topology innovation, becoming one of the research hotspots in electrical engineering in recent years. This paper retrospected the historical development of electric machine theory, and briefly introduced the concept of the magnetic field modulation and basic framework of the general airgap field modulation theory and the attempts were made to further refine it. Detailed examples of how to use the developed theory to qualitatively analyze the operating principle, torque production mechanism and magnetic field modulation behaviors, to quantitatively calculate the electromagnetic performances like torque characters and losses, to make innovations from topologies of typical electric machines, and to optimize parameters under theoretical guidance were reviewed. Finally, the future researches and trends were prospected.