This article proposes a novel asymmetric-excited flux reversal permanent magnet linear machine (AE-FRPMLM). Different from the conventional FRPMLM with uniform “NS-NS” permanent magnet (PM) sequence, the proposed AE-FRPMLM adopts an asymmetric “NSN-S” PM sequence, which can greatly reduce half of the flux leakage and generate more effective harmonics for thrust force production. Utilizing multiobjective genetic algorithm coupled with 2-D finite-element analysis (FEA), the proposed machine is globally optimized to obtain the optimal deterministic values. Furthermore, the sensitivity and robust analysis is employed to check its robustness. The electromagnetic performances are investigated and compared with conventional FRPMLM, which shows that the thrust force capability can be significantly improved more than 20% at full range of electrical loadings. The proposed AE-FRPMLM is suitable for low-cost and long-stroke direct drive propulsion.

中文翻译：

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用于长行程直接驱动推进器的非对称励磁逆反转永磁直线电机的鲁棒设计和分析

本文提出了一种新型的非对称励磁磁通反向永磁直线电机（AE-FRPMLM）。与传统的具有均匀“ NS-NS”永磁体（PM）序列的FRPMLM不同，拟议的AE-FRPMLM采用非对称的“ NSN-S” PM序列，可以大大减少一半的磁通泄漏并产生更有效的谐波。推力产生。利用多目标遗传算法结合二维有限元分析（FEA），对所提出的机器进行全局优化以获得最佳确定性值。此外，采用灵敏度和鲁棒性分析来检查其鲁棒性。对电磁性能进行了研究，并与常规FRPMLM进行了比较，这表明在整个电气负载范围内，推力能力都可以显着提高20％以上。拟议的AE-FRPMLM适用于低成本和长冲程直接驱动推进器。