汽车发电机极弧系数对转子涡流损耗的影响.pdfVIP

…蔓壁鱼垫…竺墼芝竺塑婴………………………………复猡％…： 汽车发电机极弧系数对转子涡流损耗的影响 魏琼，鲍晓华，李佳庆，杨帆 (合肥工业大学，合肥230009) 摘要：汽车发电机爪极转子是整体结构，转子涡流损耗在铁耗中占有很大的比例，准确计算和分析转子涡流 损耗至关重要。用基于棱边的求解器求解转子有限元涡流方程，计算和傅里叶分解了沿空间分布的径向气隙磁 密，得出气隙中主要的谐波次数。计算和分析了转子涡流损耗，研究了爪极转子的涡流损耗密度分布。爪极转子 是不等宽爪极，漏磁相对比较大，转子极弧系数影响气隙磁密和发电机的性能，计算和分析不同极弧系数的转子涡 流损耗。并总结出在一定的极弧系数范围内，随着两爪极间距离的增大，涡流损耗减小，为研究高效率和低损耗的 爪极发电机提供了一定的理论基础。 关键词：汽车发电机；气隙磁场；涡流损耗；极弧系数 中图分类号：TM35文献标识码：A 文章编号：1004-7018(2015)03—0027—03 InfluenceonRotor CurrentLossinClawPoleAlternatorofPole-ArcCoefficient Eddy WE／Qiong，BAOXiao—hua，LI Fan Jia—qing，YANG of (HefeiUniversityTechnology，Hefei230009，China) claw rotorinalternatorismassive therotor lossaccountsfora Abstract：The pole structure，andeddy-current large isofcrucial tocalculateand therotor loss on proportion．Therefore，itimportance analyze eddy—currentaccurately．Based solver．finite-elementcurrent Was air flux distributionwascal— edge eddy equationanalyzed．Thegap densityalongspitial culatedand themainharmonicorderinair Wasconcluded．Itcalculatedand therotor decomposed，and gap analyzed eddy Was is -current thedistributionof loss researched．Thewidthofclaw not loss，and eddy-currentdensity pole equality，and the fluxis arecoefficientofrotorhasinfluenceonair flux and leakage magneticrelativelylarge，thepole gap densityper- formanceof rotor lossofdifferentarc,coefficientwascalculatedand con— generator．So，theeddy—current pole