磁性槽楔对笼型感应电机电磁参数及性能的影响  

The Effects on the Electromagnetic Parameters and Performance by Magnetic Slot Wedge in a Squirrel-cage Induction Motor

作　　者：谢颖[1] 武鑫 李飞 XIE Ying;WUX in;LI Fei(School of Electrical and Electronic Engineering,Harbin University of Science and Technology,Harbin 150080,China)

机构地区：[1]哈尔滨理工大学电气与电子工程学院,黑龙江哈尔滨150080

出　　处：《哈尔滨理工大学学报》2018年第3期104-110,共7页Journal of Harbin University of Science and Technology

基　　金：国家自然科学基金(51107022);黑龙江省杰出青年科学基金(JC2016010);哈尔滨市科技创新人才研究专项资金(青年后备人才)(RC2014QN007005)

摘　　要：电机中定子槽嵌入的槽楔由普通的绝缘树脂材料改为磁性槽楔后,电机的电磁性能有一定改变,以一台笼型感应电机为例,对同一电机分别采用普通绝缘槽楔与磁性槽楔进行了磁场、气隙系数、槽漏抗的计算并对比分析。以瞬态磁场为基础,深入分析了磁性槽楔对电机中损耗、转矩、电磁力和电磁振动等性能的影响,并对磁性槽楔在磁场中的受力进行了分析。计算结果表明,磁性槽楔可以有效的改善气隙磁密的分布,降低损耗、电磁力和电磁振动。但同时其导磁性能越高,电机的最大转矩和启动转矩也越小,而且磁性槽楔所受到的磁拉力也就越大,更容易受损,所以要综合各方面因素,选择合适磁导率的磁性槽楔。Replacing the common insulation slot wedges with magnetic slot wedges in the stator slots can change the electromagnetic performance of motor,so the magnetic field,air-gap coefficient and slot leakage reactance in a squirrel-cage which using common slot wedges and magnetic slot wedges were calculated accurately and compared in this paper. Based on the results of transient magnetic fields,the influences of magnetic slot wedge on surface loss、iron loss、torque、electromagnetic force and vibration were analyzed in depth. Meanwhile,the forces suffered on magnetic slot wedges were also be researched. The results show that the magnetic slot wedge can improve the distribution of air-gap flux density effectively and then reduce the losses、electromagnetic forces and vibration. But the higher relatively permeability it is,the maximum and starting torque of the motor are smaller and the forces suffered on magnetic slot wedge are greater,and the magnetic slot wedges are more easier to be damaged,so when to choose the suitable relatively permeability of magnetic slot wedge,comprehensive factors should be taken into account.

关 键 词：感应电机 磁性槽楔 气隙磁场 电磁参数 电机性能 

分 类 号：TM343[电气工程—电机]