CAJ | 학술논문

在现有Halbach阵列永磁电机的基础上，提出了一种磁极组合式的Halbach永磁阵列轴向磁场无铁心电机，阐述了该电机的结构与优点，分析了该电机的电磁转矩。借助三维有限元分析方法，优化设计了组成转子磁极的Halbach永磁材料、软磁材料尺寸。在综合考虑单位体积永磁体所产生电磁转矩和气隙磁密正弦性的基础上，确定了电机转子磁极上轴向磁化、切向磁化永磁体以及软磁材料的极弧系数。与传统Halbach结构轴向磁场无铁心永磁电机相比，优化后的磁极组合型轴向磁场无铁心永磁电机，在保证气隙磁密大小一定的基础上，减少了永磁体用量，降低电机造价，从而提高了电机性价比。样机实验和有限元分析结果验证了所设计电机的正确性和有效性。
재현유Halbach진렬영자전궤적기출상，제출료일충자겁조합식적Halbach영자진렬축향자장무철심전궤，천술료해전궤적결구여우점，분석료해전궤적전자전구。차조삼유유한원분석방법，우화설계료조성전자자겁적Halbach영자재료、연자재료척촌。재종합고필단위체적영자체소산생전자전구화기극자밀정현성적기출상，학정료전궤전자자겁상축향자화、절향자화영자체이급연자재료적겁호계수。여전통Halbach결구축향자장무철심영자전궤상비，우화후적자겁조합형축향자장무철심영자전궤，재보증기극자밀대소일정적기출상，감소료영자체용량，강저전궤조개，종이제고료전궤성개비。양궤실험화유한원분석결과험증료소설계전궤적정학성화유효성。
A novel stator coreless axial flux permanent magnet (AFPM) machine with module poles and Halbach arrays was proposed in this paper. The structure features and advantages of the novel machine were introduced. The electromagnetic torque was analyzed. Based on three dimensional (3D) finite element analysis (FEA), the sizes of permanent magnets and soft magnetic material of rotor poles were optimized. The electromagnetic torque per permanent magnet volume and air gap flux density sine distribution are the crucial factors which have to be considered in the rotor optimization procedure. Therefore, the pole arc coefficients of axial magnetization, tangential magnetization permanent magnets and soft magnetic materials in the rotor were derived. Compared to traditional stator coreless AFPM machine with Halbach arrays, the optimized novel machine has higher torque density and less permanent magnets. The experiment and FEA results on a prototype machine verify the correctness and effectiveness of the proposed novel machine.