提出双向交链横向磁通平板型永磁直线同步电机的方案,克服了传统横向磁通永磁电机初级空间利用率不高的缺陷。初级铁心单元加工方便,能够充分利用次级永磁体,有效减小次级永磁体的极间漏磁,增加与绕组相交链的磁链,提高电机的空载感应电动势。文章介绍了电机的结构并阐述了其工作原理,利用磁路法建立了电机的三维等效磁网络模型,推导出了电机的空载主磁通和空载感应电动势表达式,将次级永磁体等效成面电流,获得了推力表达式,通过三维有限元方法计算电机磁场和推力。研制了一台实验样机,测得了空载感应电动势和静态推力。理论分析与实验结果基本吻合,验证了理论分析的有效性。
A bidirectional crosslinking transverse flux permanent magnet motor was presented,which had larger space utilization ratio than traditional transverse flux machine.The primary core unit can make full use of secondary permanent magnets,effectively reduce the flux leakage,and increase the winding flux and no-load back-EMF,with the features of easy manufacture.The three-dimensional magnetic circuit model was established and the analytical expression of no-load back-EMF and the thrust were derived.In additional,the magnetic field and thrust were analysised by 3-D finite element method.A prototype was designed and manufactured.The back-EMF and static thrust experiments were carried out.The theoretical analyses agreed with the experiment results well.That verified the validity of the theoretical analysis.