大功率牵引电机用非晶合金与取向硅钢组合铁心研究  

Study on the Composite Core of Amorphous Alloy and Oriented Silicon Steel for High Power Traction Motor

作　　者：侯晓军 庞聪 段蓉 孙建忠[2] HOU Xiaojun;PANG Cong;DUAN Rong;SUN Jianzhong(CRRC Yongji Electric Co.,LTD.,Yongji Shanxi 044504,China;Dalian University of Technology,Dalian Liaoning 116023,China)

机构地区：[1]中车永济电机有限公司,山西永济044502 [2]大连理工大学,辽宁大连116024

出　　处：《微电机》2024年第11期62-67,共6页Micromotors

基　　金：基于关键电磁材料的高效能牵引电机集成优化设计、制造与应用技术(2021YFB3803005)。

摘　　要：非晶合金和取向硅钢比电机中普遍采用的无取向硅钢具有更好的磁性能,但在电机中应用还存在技术障碍。为此,本文提出了适用于大功率电机的组合齿结构,以取向硅钢构成齿身,以非晶合金构成齿冠,充分发挥两种材料的优势。同时,建立了考虑机械应力和压磁效应影响的组合齿磁-力耦合数学模型和损耗分析方法,并通过实验验证了数学模型的正确性。通过对两种齿型的对比分析可以发现,Ⅰ型齿更适合大型电机,当齿部磁密超过1.8 T、且压应力为20 Mpa时,其铁损耗比Ⅱ型齿降低37.2%。Amorphous alloy and oriented silicon steel have better magnetic properties than non-oriented silicon steel which is commonly used in electric motors,but there are still technical barriers to their application in electric motors.In this paper,a composite tooth core structure suitable for high-power traction motors was proposed,in which oriented silicon steel was used as the tooth body and amorphous alloy was used as the tooth crown,so as to give full play to the advantages of the two materials.Moreover,the magnetic-mechanical coupling mathematical model and the loss analysis method of the composite tooth were established considering the influence of mechanical stress and piezomagnetic effect and the correctness of the mathematical model was verified through experiments.It is found by comparing the two types of teeth that the teeth of type Ⅰ are more suitable for large motors,and its iron loss is 37.2%smaller than that of type Ⅱ when the magnetic density of teeth is more than 1.8 T and the compressive stress is 20 MPa.

关 键 词：组合铁心 压磁效应 损耗分析 

分 类 号：TM343[电气工程—电机]