电力系统及其自动化学报2017，Vol.29Issue(2)：112-120,9.DOI:10.3969/j.issn.1003-8930.2017.02.019
定子绕组匝间短路时转子不平衡径向磁拉力
Unbalanced Radial Electromagnetic Force on Rotor under Inter-turn Short Circuit Faults of Stator Winding
戈宝军 1芦浩1
作者信息
- 1. 哈尔滨理工大学电气与电子工程学院,哈尔滨 150080
- 折叠
摘要
Abstract
This paper analyzes a 1250 MW turbo-generator and establishes its model using finite element analysis. The short circuit faults of stator winding in single-phase single-branch and single-phase multi-branch are analyzed in detail. The changing law of unbalanced radial electromagnetic force on rotor with the number(ratio)of short turns and their lo-cations are studied under two short-circuit faults,respectively. It is shown that under the inter-turn short circuit faults of stator winding,the amplitude of radial vibration depends on the unbalanced radial electromagnetic force on rotor;the amplitude of unbalanced radial electromagnetic force on rotor depends not only on the air gap magnetic flux density ,but also on the symmetry degree of the air gap magnetic flux density of different poles.关键词
定子绕组/匝间短路/气隙磁密/对称程度/电磁拉力Key words
stator winding/inter-turn short circuit/air gap magnetic flux density/symmetry degree/electromagnetic force分类
信息技术与安全科学引用本文复制引用
戈宝军,芦浩..定子绕组匝间短路时转子不平衡径向磁拉力[J].电力系统及其自动化学报,2017,29(2):112-120,9.
