Investigation of Novel Multi-Tooth Linear Variable Flux Reluctance Machines
Investigation of Novel Multi-Tooth Linear Variable Flux Reluctance Machines
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DOI：
10.1109/tmag.2018.2839662
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发表时间：
2018-11
影响因子：
2.1
通讯作者：
Yiming Shen;Q. Lu
中科院分区：
文献类型：
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作者：
Yiming Shen;Q. Lu
提出了一种新型多齿直线变磁通磁阻电机。首先，拓扑结构和可行的初级/次级极组合的单齿和多齿LVFRM与六个初级极。基于磁导模型的解析分析，得出了当直流磁场和交流电枢铜损相等时，平均力最大的结论。此外，四个小的牙齿每一个主要极（<inline-formula><tex-math notation="LaTeX">$n = 4$</tex-math></inline-formula>）LVFRM表现出最大的平均力。利用二维有限元分析方法，对比研究了<inline-formula><tex-math notation="LaTeX">N_{s} = nN_{p} + 1$</tex-math></inline-formula>的单齿和四齿LVFRM的电磁性能。结果表明：6/25主/副极四齿LVFRM比6/7主/副极单齿LVFRM具有更高的力容量和更低的力涟漪，且铜损相对较低。与单齿LVFRM相似，<inline-formula><tex-math notation="LaTeX">当NS = nNP 1$时</tex-math></inline-formula>，四齿LVFRM的反电动势正弦值更大，推力更大，力涟漪更小。<inline-formula><tex-math notation="LaTeX"></tex-math></inline-formula>最后，对6/25主/副极四齿LVFRM的三维模型进行了研究，以验证二维有限元预测结果。
Novel multi-tooth linear variable flux reluctance machines (LVFRMs) are proposed in this paper. First, the topologies and feasible primary-/secondary-pole combinations of single- and multi-tooth LVFRMs with six primary poles are introduced. Based on the analytical analysis of permeance model, the maximum average force can be obtained when the dc field and ac armature copper losses are equal. Moreover, four small teeth per primary pole (<inline-formula> <tex-math notation="LaTeX">$n = 4$ </tex-math></inline-formula>) LVFRM exhibits the largest average force. Furthermore, the electromagnetic performances of single- and four-tooth LVFRMs with <inline-formula> <tex-math notation="LaTeX">$N_{s} = nN_{p} + 1$ </tex-math></inline-formula> are comparatively studied using the 2-D finite-element analysis (FEA). It is shown that 6/25 primary-/secondary-pole four-tooth LVFRM can provide higher force capability and lower force ripple than that of 6/7 primary-/secondary-pole single-tooth LVFRM at relatively low copper loss. Similar to single-tooth LVFRMs, four-tooth LVFRMs with <inline-formula> <tex-math notation="LaTeX">$N_{s} = nN_{p} \pm 1$ </tex-math></inline-formula> exhibit more sinusoidal back electromotive force, larger thrust force and lower force ripple than those with <inline-formula> <tex-math notation="LaTeX">$N_{s} = nN_{p} \pm 2$ </tex-math></inline-formula>. Finally, the 3-D model of 6/25 primary-/secondary-pole four-tooth LVFRM is investigated to validate the 2-D FEA predicted results.