To accurately analyze the distribution characteristics and variation rules of the stator slot wall electromagnetic force during inter-turn short circuit of hydro-generator excitation winding,a finite element model of a hydro-generator was established by ANSYS software,and the dynamic electromagnetic force of stator slot wall was calculated with Maxwell stress method.The dynamic electromagnetic force distribution on the stator slot wall was obtained.The results indicated that the stator core experiences unbalanced electromagnetic forces because of the inter-turn short circuit of the hydro-generator excitation winding,and these unbalanced electromagnetic force shows the change law of large groove and small groove bottom.Furthermore,the dynamic electromagnetic forces on the stator core significantly increase with an increase in the inter-turn short circuit of the hydro-generator excitation winding.
关键词
水轮发电机/励磁绕组/匝间短路/动态电磁力/麦克斯韦应力法
Key words
hydro-generator/excitation winding/inter-turn short circuit/dynamic electromagnetic forces/maxwell stress method
维普
万方数据