1 School of Electrical Engineering and Automation, Jiangxi University of Science and Technology, Ganzhou 341000, China
2 Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341000, China
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文章历史+
Received
Published
Revised
2025-04-18
2026-03-08
2025-12-15
Online Date
2026-07-09
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摘要
针对内置式永磁同步电机漏磁导致的转矩性能下降问题,提出融合空气磁障设计与不均匀气隙的协同优化方法。基于磁路解析法建立漏磁数学模型,揭示磁桥几何参数与永磁体槽间隙的耦合作用机制。首先,构建阶梯式空气磁障拓扑结构,采用自适应最优预后元模型(adaptive metamodel of optimal prognosis,AMOP)进行参数分析,筛选关键设计变量,实现磁通泄漏路径重构,优化后输出转矩提升2.95%,转矩脉动下降6.92%;然后,提出非线性不均匀气隙补偿策略,结合AMOP算法建立Pareto前沿解集,实现气隙磁密谐波抑制,二次优化后输出转矩达134.59 N·m,在实际工况下输出转矩提升11.94%。结果表明:该协同优化方案可使漏磁减小,输出转矩明显提升,电机综合性能得到改善。
Abstract
For the torque performance degradation caused by flux leakage in interior permanent magnet synchronous motors, a synergistic optimization method integrating air magnetic barrier design and non-uniform air gap was proposed. Based on the magnetic circuit analysis method, a mathematical model of flux leakage was established to uncover the coupling mechanism between the geometric parameters of the magnetic bridge and the slot gap of permanent magnets. Firstly,a stepped air magnetic barrier topology was designed. Key design variables were screened via the adaptive metaheuristic optimization prognosis model for parameter analysis, enabling reconstruction of flux leakage paths. Post-optimization, the output torque increases by 2.95%, and torque ripple decreases by 6.92%. Subsequently, a nonlinear uneven air-gap compensation strategy was proposed. Combined with the AMOP adaptive metamodel of opitimal prognosis algorithm, a Pareto front solution set was established to achieve air-gap flux density harmonic suppression. After secondary optimization, the output torque reaches 134.59 N·m, achieving an 11.94% improvement under actual operating conditions. The results demonstrate that this synergistic optimization scheme effectively reduces flux leakage, significantly enhances output torque, and improves overall motor performance.
CHEN De-hai, LI Zhi-jun, XU Jin-peng, GONG Hao.
Multi-objective Performance Enhancement of IPMSM through Collaborative Optimization of Magnetic Barriers and Non-uniform Air Gap[J].
Science Technology and Engineering, 2026, 26(7): 2935-2941 DOI:10.12404/j.issn.1671-1815.2502771
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