电机与控制应用2025，Vol.52Issue(6)：658-668,11.DOI:10.12177/emca.2025.038
基于改进等效面电流法的梯形Halbach永磁直线同步电机气隙磁场特性研究
Research on Air Gap Magnetic Field Characteristics of Trapezoidal Halbach Permanent Magnet Linear Synchronous Motor Based on Improved Equivalent Surface Current Method
摘要
Abstract
[Objective]Accurate analysis of the air gap magnetic field is the focus of research in the field of precision permanent magnet linear synchronous motor(PMLSM).[Methods]Two-dimensional air gap magnetic field of a secondary trapezoidal Halbach permanent magnet array coreless PMLSM was taken as the research object at the paper.On the basis of the equivalent surface current method,an improved equivalent analytical algorithm with a trapezoidal side length unit was proposed.The equivalent analytical model of the magnetic induction vector of the two-dimensional air gap was established.[Results]And the air gap magnetic field of the trapezoidal Halbach array coreless PMLSM was calculated.The results showed that α and αw have a significant influence on the Bpeak and THDB of the central magnetic field air gap.With the synergy of α and αw,identified the flux convergence effect,which makes the maximum range of Bpeak α>90° and αw<0.5.And the equilateral effect,which causes the minimum region of THDB to change linearly.[Conclusion]The calculation results of the established improved equivalent surface current analytical model in this paper agree with those verified by the finite element method.The calculation is convenient,and the accuracy of the result is high.This research provides a new method for analyzing the air gap magnetic field of a permanent magnet with a nonrectangular cross-section,and also prorides a reference for optimizing the PMLSM pole model.关键词
永磁直线同步电动机/等效面电流法/气隙磁场/总谐波畸变率Key words
permanent magnet linear synchronous motor/equivalent surface current method/air gap magnetic field/total harmonic distortion分类
矿业与冶金引用本文复制引用
李博,李辉杰,赵晓龙,李雪梅,李瑞,李艳芳..基于改进等效面电流法的梯形Halbach永磁直线同步电机气隙磁场特性研究[J].电机与控制应用,2025,52(6):658-668,11.基金项目
国家自然科学基金(51705390) （51705390）
西安工商学院大学生创新训练计划项目(202413682001) （202413682001）
2024年度西安工商学院教学改革研究项目(24YJZ03) National Natural Science Foundation of China(51705390) （24YJZ03）
2024 Innovation Training Program for College Students at Xi'an Technology and Business College(202413682001) （202413682001）
Teaching Reform Research Project of Xi'an Technology and Business College in 2024(24YJZ03) （24YJZ03）
