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定子电励磁型磁通切换(stator electrical excitation flux-switching,SEEFS)电机由于其定、转子结构简单,制作成本低,调速范围宽,振动噪声小等优点而逐渐被应用到电动汽车、轨道交通等领域,有着广阔的发展前景。以混合动力汽车车载低压直流辅助发电系统为背景,基于24/14极SEEFS电机提出了一种针对定子电励磁型同步磁阻(stator electrical excitation synchronous reluctance,SEESR)电机绕组构成原则的通用分析方法——虚拟绕组磁链法,该方法在SEEFS电机每个定子齿上补充一套辅助分析的虚拟绕组,通过对各个虚拟绕组磁链的分析,归类和组合,准确构成设计所需的三相或多相绕组;此方法可以针对任意极槽配合以及任意励磁绕组排布方式的SEESR电机进行分析,并得出其相应的绕组构成形式。同时,针对低压直流应用场合,采用了一种具有非平行齿槽的电机优化模型,该模型具有更高的功率密度。有限元分析和样机实验证明了设计方案的可行性和正确性。
Stator electrical excitation flux-switching (SEEFS) motor has been gradually applied to electric vehicles, rail transit (MEF), rail transit and so on due to its simple structure, simple rotor structure, low production cost, wide speed range and low vibration noise. And other fields, has a broad development prospects. Based on the 24/14 SEEFS motor, a general analysis method based on the stator winding principle of SEESR is put forward based on the hybrid vehicle on-board low voltage DC auxiliary power generation system. -Fictitious winding flux linkage method, this method complements each stator tooth of SEEFS motor with a supplementary analysis of the virtual winding, through the analysis, classification and combination of each virtual winding flux linkage, accurately constitute the design of the three-phase or Multi-phase windings; this method can be used to analyze the SEESR motors with any pole slots and any excitation winding arrangement, and draw the corresponding winding configuration. In the meantime, for the low-voltage DC applications, a motor optimization model with non-parallel slots is adopted, which has a higher power density. Finite element analysis and prototype experiments prove the feasibility and correctness of the design scheme.