硅钢涂层绝缘性能对电机定子涡流损耗的影响

Effect of insulating properties of silicon steel coatingon stator eddy-current loss of motor

永磁同步电机中定子铁芯损耗分析是电机设计的关键,在Opera软件建立的500W交流永磁同步电机模型上,引入涡流损耗模型,计算层间电阻对电机定子铁芯损耗的影响。结果表明:层间电阻通过改变涡流损耗来影响定子铁芯损耗,当层间电阻在50Ω·mm^2以上时,定子铁芯损耗基本维持不变;当层间电阻小于0.01Ω·mm^2时,定子损耗最大;当层间电阻从300Ω·mm^2降低到50Ω·mm^2和0.01Ω·mm^2时,定子铁芯损耗分别升高0.22%和19.70%。

The stator core loss analysis in motor design of permanent magnet synchronous motor(PMSM)is critical.The eddy loss model is introduced to calculate the influence of coating insulation resistance on the stator core loss,based on a 500 W AC PMSM model established by Opera software.The results showed that the coating insulation resistance affects the stator core loss by changing the eddy current loss,when the coating insulation resistance is above 50Ω·mm^2,the stator core loss is basically maintained.When the coating insulation resistance is less than0.01Ω·mm^2,the stator core loss is largest.The stator core loss increased by 0.22% when the coating insulation resistance is reduced from 300Ω·mm^2 to 50Ω·mm^2.The stator core loss increased by 19.70% when the coating insulation resistance is reduced from 300Ω·mm^2 to 0.01Ω·mm^2.