永磁辅助同步磁阻电机的电磁分析及振动噪声优化  

Electromagnetic Analysis and Vibration Noise Optimization of Permanent Magnet Assisted Synchronous Reluctance Motor

作　　者：倪玉铭 胡岩[1] 刘泽宇 曹力 NI Yuming;HU Yan;LIU Zeyu;CAO Li(College of Electrical Engineering,Shenyang University of Technology,Shenyang 110870,China)

机构地区：[1]沈阳工业大学电气工程学院,沈阳110870

出　　处：《微特电机》2022年第2期8-13,共6页Small & Special Electrical Machines

摘　　要：针对永磁辅助同步磁阻电机运行时存在振动噪声问题,采用逐层优化的方法抑制电机振动噪声。以一台1.5 kW的永磁辅助同步磁阻电机的电磁振动进行研究,推导了电机径向电磁力解析式,分析了各种磁场相互作用产生径向电磁力的阶数和频率;利用有限元软件,对定子槽口进行结构设计,削弱幅值较大的径向电磁力,对电机转子开辅助槽设计,进一步抑制电磁振动。对比优化前后的电磁振动特性,通过对电机定子槽口、转子辅助槽逐层优化,电机的平均转矩小幅度提高,优化后振动加速度最大值下降55.7%,等辐射声功率级降低14.2%。结果表明,该方法能够有效地降低永磁辅助同步磁阻电机的振动与噪声。In view of the vibration and noise problems of permanent magnet assisted synchronous reluctance motors during operation,a layer-by-layer optimization method was adopted to suppress the vibration and noise of the motor.The electromagnetic vibration of a 1.5 kW permanent magnet assisted synchronous reluctance motor was studied.The analytic formula of the radial electromagnetic force of the motor was derived,and the order and frequency of the radial electromagnetic force generated by the interaction of various magnetic fields were analyzed.The finite element software initially designed the stator slot structure to weaken the larger radial electromagnetic force.The motor rotor was designed with auxiliary slots to further suppress the electromagnetic vibration.Comparing the electromagnetic vibration characteristics before and after optimization,through layer-by-layer optimization of the stator slot and rotor auxiliary slot,the average torque of the motor was increased slightly,the maximum vibration acceleration after optimization was reduced by 55.7%,and the equivalent radiated sound power level was reduced by 14.2%.The results show that the method can effectively reduce the vibration and noise of the permanent magnet assisted synchronous reluctance motor.

关 键 词：永磁辅助同步磁阻电机 径向电磁力 振动分析 多目标优化 

分 类 号：TM351[电气工程—电机]