高转矩密度游标永磁电机拓扑定向构造方法  

Topology Orientation Construction Methodology of High-torque Density Vernier Permanent Magnet Machine

作　　者：房莉 曲荣海[1] 李大伟 FANG Li;QU Ronghai;LI Dawei(School of Electrical and Electronic Engineering,Huazhong University of Science and Technology,Wuhan 430074,Hubei Province,China)

机构地区：[1]华中科技大学电气与电子工程学院,湖北省武汉市430074

出　　处：《中国电机工程学报》2025年第4期1284-1298,I0006,共16页PROCEEDINGS OF THE CHINESE SOCIETY FOR ELECTRICAL ENGINEERING

基　　金：国家自然科学基金(重大项目)(51991382);国家自然科学基金(优秀青年基金项目)(52122705);国家资助博士后研究人员计划(GZC20240537)。

摘　　要：近年,一类基于多工作磁密谐波的游标永磁电机获得高度关注,在同样电磁负荷水平下,其转矩密度可达到常规永磁同步电机的近2倍。然而,现有各类拓扑的改进普遍是对已有拓扑尺寸参数迭代优化,这导致气隙磁密谐波成分固化、特征耦合严重,难以充分发挥单位磁密下的谐波转矩产生能力,进一步提升转矩密度困难。因此,该文提出一种高转矩密度游标永磁电机拓扑定向构造方法,基于气隙磁导微元理论模型,并提出谐波分析和磁通分析2种计算方法,旨在定量、直观地阐释平均转矩产生机制。进一步,研究提升多磁密谐波协同产生转矩的方法,并最终提出电磁拓扑定向构造技术,为提升电机转矩密度,探索单位磁密转矩产生能力上限的科学问题提供理论基础与技术支撑。最终,定向构造了2款游标永磁电机,并进行详细的电磁性能分析,在此基础上制作样机并进行实验验证,进一步验证设计与分析结果的正确性与有效性。Recently,vernier permanent magnet machines(VPMM)based on multiple flux density harmonics attract worldwide attention.Under the same electromagnetic loading,the torque density is nearly twice that of conventional PM synchronous machines.However,most of the novel topologies are advanced by iteratively optimizing the structural dimensions of the existing topologies,which leads to the solidification and coupling of flux density harmonics,making it tricky to fully exploit the torque ability under unit flux density and further enhance torque density.This article proposes a topology orientation construction method for high-torque density VPMMs.Based on the air-gap permeance unit model,harmonic analysis and flux analysis approaches are proposed,which provide the quantitative and intuitive illustration of the generation of average torque.Moreover,methods for enhancing the torque ability of multiple flux density densities are studied,and topology orientation construction technique is then proposed,providing theoretical basis and support for improving the torque density and exploring the upper limit of torque capability per unit flux density.Finally,two VPMMs are constructed,and the detailed electromagnetic performance analysis is conducted.Then,a prototype is made and tested,confirming the correctness and effectiveness of the design and analysis results.

关 键 词：游标永磁电机 转矩密度 谐波分析 磁通分析 拓扑构造 

分 类 号：TM351[电气工程—电机]