CAJ | 학술논문

介绍了一种各相绕组间低热耦合无电磁耦合双余度永磁同步电机.通过二维电磁场有限元分析，得到了电机定子绕组铜耗，定子铁心大齿、小齿和轭部铁耗，以及永磁体和护套的涡流损耗，计算出它们的生热率.根据传热学理论，确定了电机各部件的导热系数和表面传热系数，并对定子绕组线圈进行了精细化建模，建立了电机三维温度场模型，通过有限元分析得到了额定工况下电机的三维全域稳态温度分布结果.当一套绕组发生单相短路故障另一套绕组单独工作时，故障相绕组和工作绕组最高温度相差7.1,℃，说明相绕组间热耦合较低；当两套绕组同时工作时，机壳表面最高温度的分析结果和实验结果误差为4.5%,，验证了分析方法的有效性.
개소료일충각상요조간저열우합무전자우합쌍여도영자동보전궤.통과이유전자장유한원분석，득도료전궤정자요조동모，정자철심대치、소치화액부철모，이급영자체화호투적와류손모，계산출타문적생열솔.근거전열학이론，학정료전궤각부건적도열계수화표면전열계수，병대정자요조선권진행료정세화건모，건립료전궤삼유온도장모형，통과유한원분석득도료액정공황하전궤적삼유전역은태온도분포결과.당일투요조발생단상단로고장령일투요조단독공작시，고장상요조화공작요조최고온도상차7.1,℃，설명상요조간열우합교저；당량투요조동시공작시，궤각표면최고온도적분석결과화실험결과오차위4.5%,，험증료분석방법적유효성.
A weak thermal coupling and no electromagnetic coupling dual-redundancy permanent magnet synchro-nous motor(DRPMSM)was introduced. Stator winding copper loss,stator iron core losses in yoke,big teeth and small teeth,and eddy current losses in permanent magnet and rotor sheath were obtained with finite element analysis,and heat generation rates were calculated. On the basis of heat transfer theory,thermal conductivities and surface heat transfer coefficients of each part of motor were determined,stator winding was fine modeled with re-finement,3D steady-state temperature field model of PMSM was established,and 3D steady-state temperature dis-tribution at rated condition was obtained with finite element analysis. Under the mode of fault state mono-redundancy,the biggest temperature difference between fault phase winding and working winding is 7.1,℃,which shows that interphase thermal coupling is low. Under the mode of dual-redundancy,the error between analysis results and experimental results of the highest temperature on the casing surface is 4.5%,which verifies the efficiency of analysis method.