双定子同极内嵌永磁游标电机转子永磁体极弧系数优化  

Permanent Magnet Arc Ratio Optimization for a Dual-Stator Vernier Machine with Consequent-Pole Rotor

作　　者：张进 ZHANG Jin(Guang'an Vocational&Technical College,Guang′an 638000,China)

机构地区：[1]广安职业技术学院,广安638000

出　　处：《微特电机》2023年第10期6-9,共4页Small & Special Electrical Machines

摘　　要：进一步对双定子同极内嵌永磁游标电机(DS-CP-PMVM)进行讨论,旨在优化同极内嵌永磁转子结构,以保证转子永磁体用量减少的情况下,不降低电机的转矩能力。分析了DS-CP-PMVM的磁力线分布,提出当转子内外侧永磁体中心轴线夹角与内外定子A相轴线夹角相同时,转矩能力最优;讨论了永磁体极弧系数对转矩的影响,当转子内外侧永磁体极弧系数分别为0.62和0.66时,输出转矩最大,与相同永磁体厚度的表贴式结构相比,在定子电流为6 A时,转矩提高了6.4%。A dual-stator permanent magnet vernier machine with a consequent-pole rotor(DS-CP-PMVM)was further discussed.The consequent-pole rotor structure was optimized,so as to ensure that the torque capacity of the DS-CP-PMVM could not be reduced when the amount of permanent magnets used in the rotor was reduced.Flux paths distribution of DS-CP-PMVM was analyzed.The torque capability was optimal when the relative position between the d-axis of dual-sided PMs was the same as relative angle between the phase-A axes of both stators.The influence of PM arc ratio on output torque was discussed.The DS-CP-PMVM could maintain a good torque capability at the optimal PM arc ratio K pm-i=0.62 and K pm-o=0.66.The output torque of DS-CP-PMVM with optimal PM arc ratios is 6.4%higher than that of dual-stator surface mount PM machine(DS-SM-PMVM)with the same PM thickness.

关 键 词：永磁游标电机 双定子 同极内嵌转子 极弧系数 

分 类 号：TM351[电气工程—电机]