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定子铁心焊缝数量及尺寸对永磁同步电机性能的影响

Effects of the number and size of stator iron core welds on the performanceof permanent magnet synchronous motors
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摘要 本文基于工程实践,首先仿真分析了焊槽尺寸形状、焊槽位置和焊槽数量对于6极54槽新能源汽车用永磁同步电机三相感应电势不平衡度的影响;其次仿真分析了在不同定子槽数和电机极数下,电机三相感应电势不平衡度的变化规律;最后进行了样机制作和测试验证。通过仿真分析和试验验证,指出了对于6极54槽新能源汽车用永磁同步电机,焊槽的宽度和深度均会影响电机的三相感应电势的不平衡度,电机的三相感应电势的不平衡度与焊槽的尺寸成正比例关系;同时还指出了对于永磁同步电机,从减小三相感应电势不平衡的角度,定子焊槽的数量不适宜选用极数的整数倍;此外还指出了电机的三相电压和电流的平衡度与电机的扭矩输出和运行效率的对应关系。 Based on engineering practice,the influences of welding groove size,shape,position,and quantity on the three-phase induced potential imbalance of permanent magnet synchronous motors for 6-pole 54 groove new energy vehicles were firstly simulated and analyzed in this paper.And secondly,the variation law of the three-phase induced potential imbalance of the motor was simulated and analyzed under different stator slot numbers and motor pole numbers.Finally,prototype production and testing verification were carried out.Through simulation analysis and experimental verification,it is pointed out that for permanent magnet synchronous motors used in 6-pole 54 slot new energy vehicles,the width and depth of the welding groove will affect the imbalance of the three-phase induced potential of the motor.The imbalance of the three-phase induced potential of the motor is directly proportional to the size of the welding groove.At the same time,it was pointed out that for permanent magnet synchronous motors,from the perspective of reducing the imbalance of three-phase induced potential,the number of stator welding slots should not be an integer multiple of the number of poles.In addition,the corresponding relationship between the balance of three-phase voltage and current of the motor and the torque output and operating efficiency of the motor was also pointed out.
作者 李广林 王斌 柳振方 张保磊 赵凯 李天文 LI Guanglin;WANG Bin;LIU Zhenfang;ZHANG Baolei;ZHAO Kai;LI Tianwen(Shougang Zhixin Electromagnetic Material R&D(Beijing)Co.,Ltd.,Beijing 101300,China;Shougang Zhixin Electromagnetic Materials(Qian’an)Co.,Ltd.,Qian’an 064400,China)
出处 《电工钢》 CAS 2024年第5期26-35,共10页 ELECTRICAL STEEL
关键词 永磁同步电机 定子铁心 焊缝 permanent magnet synchronous motors stator core weld joint
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