CAJ | 학술논문

为了精确计算感应电机转子上的涡流损耗并探讨定子开槽对其产生的影响，对于额定功率为2．2 kW极对数为4的小型铸铝转子感应电机中转子涡流损耗情况进行了详细分析。通过建立不同定子槽开口的电机模型，结合电机内谐波磁场的理论分析与二维有限元的计算方法，研究了电机气隙谐波磁场与定子槽开口的关系，揭示了转子中不同位置的磁密与涡电流分布情况，并对比分析了不同槽开口模型中转子铁心与导条中涡流损耗的大小关系。仿真结果表明：气隙中的谐波磁场以及转子铁心表面的涡电流密度都随着定子槽开口增大而增大；转子铁心及导条中的涡流损耗随定子槽开口的增大呈二次函数的增长趋势。
위료정학계산감응전궤전자상적와류손모병탐토정자개조대기산생적영향，대우액정공솔위2．2 kW겁대수위4적소형주려전자감응전궤중전자와류손모정황진행료상세분석。통과건립불동정자조개구적전궤모형，결합전궤내해파자장적이론분석여이유유한원적계산방법，연구료전궤기극해파자장여정자조개구적관계，게시료전자중불동위치적자밀여와전류분포정황，병대비분석료불동조개구모형중전자철심여도조중와류손모적대소관계。방진결과표명：기극중적해파자장이급전자철심표면적와전류밀도도수착정자조개구증대이증대；전자철심급도조중적와류손모수정자조개구적증대정이차함수적증장추세。
In order to calculate the eddy current loss in rotor of induction motor precisely and investigate the influence of stator slotting on the loss, a small induction motor with aluminum casting rotor, which has 4 pole pairs and its rated power is 2. 2 kW, was analyzed in detail. The relationship between air gap harmonic magnetic field and stator slot opening was discussed by the theoretical analysis of harmonic mag-netic field in induction motor. Distributions of magnetic field density and eddy current in different posi-tion of rotor were also obtained by using two-dimensional finite element method. Finally, through establis-hing motor models with different stator slot opening, comparative analysis was carried out on the eddy cur-rent loss in rotor core and bars. Simulation result shows that, both the value of harmonic field in air gap and eddy current density in rotor surface increase with stator slot opening. And the eddy current loss of rotor core and bars also increase with it, which rising tendency plays out with a quadratic function expres-sion.