新型直爪混合励磁爪极电机设计与研究

Design of a new type of straight claw hybrid excitation claw pole motor

针对现阶段爪极电机的易磁饱和、电励磁损耗过高和高速状态下易产生形变等问题,对爪极电机的励磁方式、磁路和运行中的应力进行了分析,提出了一种在爪极电机根部添加永磁体和铁齿环部件实现混合励磁。同时将现阶段爪极电机斜爪结构改为直爪结构的新型直爪爪极电机,利用Ansoft软件和Solidworks软件对新型电机与传统电机的性能进行了对比分析,同时也对不同转速下电机的应力进行了仿真分析。研究结果表明:新型爪极电机在实现混合励磁的基础上,形成了更高效的磁通路径,同时还具有较高的磁饱和电流和较低的励磁损耗,有较好的输出特性;在机械性能方面,新型爪极电机无论是在何种下都有着更低的应力效果,能满足电机高速运行的要求。

Aiming at the problems of easy magnetic saturation, excessive excitation loss and deformation at high speed in the current stage, the excitation mode, magnetic circuit and running stress of the claw-pole motor were analyzed. The permanent magnet and the iron ring gear were added to the root of the claw pole motor to realize the hybrid excitation. At the same time, the claw claw pole motor claw structure was changed to the new straight claw claw pole motor with straight claw structure, and the new motor and the tradition were realized by Ansoft software and Solidworks software. The performance comparison of the motor was analyzed. At the same time, the stress of the motor at different speeds was simulated and analyzed. The results indicate that the new claw pole motor forms a more efficient flux path on the basis of hybrid excitation, and also has higher magnetic saturation current and lower excitation loss, and has better output characteristics. In terms of mechanical properties, the new claw-pole motor has a lower stress effect regardless of the condition, and can fully meet the high-speed operation of the motor.