CAJ | 학술논문

横向磁通永磁电机以电负荷和磁负荷在空间上相互解耦,能获得较高的功率密度而闻名.因其同时具有低速、大转矩及多极数的优点而适用于直驱风力发电系统.与传统横向磁通永磁发电机相比,该文提出的新型双 C 型定子聚磁式转子的横向磁通永磁发电机空间利用率得到明显提高.对发电机的基本结构和运行原理作了详细的描述.为了验证双C型结构在原理上的可行性,采用三维有限元分析计算了空载磁场分布,对其静态特性和瞬态特性包括磁通密度、电枢反电势,以及电枢自感波形进行了研究,对发电机的齿槽转矩也进行了分析.结果表明,双 C 型定子结构可以显著提高横向磁通永磁发电机的功率密度.最后设计研制了一台三相1 kW样机,并进行了实验,实验结果与理论分析基本一致.
횡향자통영자전궤이전부하화자부하재공간상상호해우,능획득교고적공솔밀도이문명.인기동시구유저속、대전구급다겁수적우점이괄용우직구풍력발전계통.여전통횡향자통영자발전궤상비,해문제출적신형쌍 C 형정자취자식전자적횡향자통영자발전궤공간이용솔득도명현제고.대발전궤적기본결구화운행원리작료상세적묘술.위료험증쌍C형결구재원리상적가행성,채용삼유유한원분석계산료공재자장분포,대기정태특성화순태특성포괄자통밀도、전추반전세,이급전추자감파형진행료연구,대발전궤적치조전구야진행료분석.결과표명,쌍 C 형정자결구가이현저제고횡향자통영자발전궤적공솔밀도.최후설계연제료일태삼상1 kW양궤,병진행료실험,실험결과여이론분석기본일치.
Transverse flux permanent magnet generator is well-known for the decoupled electric load and magnetic load to harvest high power density. It is applied in direct-drive wind power generation for the merits of low speed, large torque capability and considerable pole numbers. This paper presents a novel transverse flux permanent magnet generator with double-C stator and flux-concentrated rotor (DSFC-TFPMG), which has almost twice the flux linkage compared with traditional double-side TFPMGs. The structure and operation principle of the generator were described in detail. The three-dimensional (3D) finite element method (FEM) was employed to compute the no-load magnetic field distributions. Static characteristics, including flux density waveform, EMF waveform and inductance waveform of the armature winding, were obtained to verify the principle and feasibility of the generator with double-C stator hoops. The cogging torque of the presented generator was also analyzed and verified by the 3D FEM. The FEM results show that the generator has significantly increased power density due to the double-C stator structure. A prototype is fabricated and some experiments are conducted, which results verify the analysis preview well.