This paper overviews advances on permanent magnet(PM) brushless machines over last 30 years,with particular reference to new and novel machine topologies.These include current states and trends for surface-mounted and...This paper overviews advances on permanent magnet(PM) brushless machines over last 30 years,with particular reference to new and novel machine topologies.These include current states and trends for surface-mounted and interior PM machines,electrically and mechanically adjusted variable flux PM machines including memory machine,hybrid PM machines which uniquely integrate PM technology into induction machines,switched and synchronous reluctance machines and wound field machines,Halbach PM machines,dual-rotor PM machines,and magnetically geared PM machines,etc.The paper highlights their features and applications to various market sectors.展开更多
针对高速永磁发电机在负载或转速变化时难以维持输出电压恒定的问题,提出了一种新型混合励磁发电机。详细介绍了其结构与调压原理,建立了发电机的等效磁路模型,推导了空载调压范围的解析公式;利用三维有限元方法深入分析了发电机磁场的...针对高速永磁发电机在负载或转速变化时难以维持输出电压恒定的问题,提出了一种新型混合励磁发电机。详细介绍了其结构与调压原理,建立了发电机的等效磁路模型,推导了空载调压范围的解析公式;利用三维有限元方法深入分析了发电机磁场的分布规律与调节能力;研制了一台10 k W混合励磁原理样机,试验结果表明新型混合励磁发电机能够满足调压要求,并验证了该发电机结构和分析方法的合理性。展开更多
基金the financial support by the Engineering and Physics Science Research Council,UK,Ref.EP/F016506/1
文摘This paper overviews advances on permanent magnet(PM) brushless machines over last 30 years,with particular reference to new and novel machine topologies.These include current states and trends for surface-mounted and interior PM machines,electrically and mechanically adjusted variable flux PM machines including memory machine,hybrid PM machines which uniquely integrate PM technology into induction machines,switched and synchronous reluctance machines and wound field machines,Halbach PM machines,dual-rotor PM machines,and magnetically geared PM machines,etc.The paper highlights their features and applications to various market sectors.
文摘针对高速永磁发电机在负载或转速变化时难以维持输出电压恒定的问题,提出了一种新型混合励磁发电机。详细介绍了其结构与调压原理,建立了发电机的等效磁路模型,推导了空载调压范围的解析公式;利用三维有限元方法深入分析了发电机磁场的分布规律与调节能力;研制了一台10 k W混合励磁原理样机,试验结果表明新型混合励磁发电机能够满足调压要求,并验证了该发电机结构和分析方法的合理性。
