沈阳工业大学学报2012，Vol.34Issue(2)：138-143,6.
1000MW水轮发电机不对称运行时阻尼条涡流损耗计算分析
Calculation and analysis on eddy current loss of damping bar under asymmetrical operation of 1 000 MW hydro-generator
摘要
Abstract
Aiming at the phenomenon that the damping bars would easily fuse under the asymmetrical operation of large hydro-generator, the eddy current loss of damping bars under the asymmetrical operation of a 1 000 MW hydro-generator was further studied on the basis of establishing two-dimensional electromagnetic field-circuit-motion coupled time-stepping finite element model. The influence of such factors as the stator slotting, magnetic pole rotation and stator current on the eddy Current loss of damping bars were comprehensively considered. The eddy current loss of each damping bar in one magnetic pole under different operating conditions was accurately calculated, and the change rule of eddy current loss was analyzed. And thus, the influence of the connection mode of damping system as well as the radius and material of damping bar on the eddy current loss of damPing bars was discussed. The results indicate that the eddy current loss of last damping bar along the rotation direction is the largest, and the structure parameters of damping system have greater influence on the distribution of eddy current loss of damping bars.关键词
1000/MW水轮发电机/不对称运行/阻尼条/涡流损耗/数值计算/阻尼方式/阻尼条半径/阻尼条材料/tKey words
1 000 MW hydro-generator/asymmetrical operation/damping bar/eddy current loss/numerical calculation/damping mode/damping bar radius/damping bar material分类
信息技术与安全科学引用本文复制引用
梁艳萍,孙洋,陈晶,孙玉田..1000MW水轮发电机不对称运行时阻尼条涡流损耗计算分析[J].沈阳工业大学学报,2012,34(2):138-143,6.基金项目
“十一五”国家科技支撑计划重大资助项目（2007BAA05B06）. （）
