高压电器2012，Vol.48Issue(8)：24-27,4.
基于有限元分析的双馈异步发电机定子绕组匝间短路故障诊断研究
Simulation on Inter-turn Short Circuit Faults of Stator Winding Via Finite-element Method for DFIG
摘要
Abstract
We establish a doubly-fed induction generator (DFIG) model with the finite element analysis software Maxwell 2D to simulate different inter-turn short circuit faults of stator winding with varying short circuit number and resistance. Simulations show that the inter-turn short circuit faults induce negative sequence current in DFIG stator, and the negative sequence current increases with the severity of inter-turn short circuit fault. Moreover, symmetric power source and load also influence the negative sequence current. So the impacts of these non-fault factors must be compensated when the negative sequence current is used in the fault diagnosis. In addition, as an inter-turn short circuit fault occurs, the stator's three-phase current is no longer symmetric, where the fault-phase current is always the biggest, but the phase separation of other two phases without fault gets the maximum 120°关键词
双馈异步发电机/故障诊断/定子绕组匝间短路/负序电流/有限元Key words
doubly-fed induction generator(DFIG)/fault diagnosis/stator winding inter-turn short circuit/negative sequence current/finite element analysis分类
信息技术与安全科学引用本文复制引用
张志新,马宏忠,钱雅云,程俊..基于有限元分析的双馈异步发电机定子绕组匝间短路故障诊断研究[J].高压电器,2012,48(8):24-27,4.基金项目
国家自然科学基金(51177039) （51177039）
教育部博士点基金(20090944110011). （20090944110011）
