十二相整流同步发电机系统异桥相间短路的故障分析

发布时间：2018-05-22 13:47

本文选题：十二相整流同步发电机 + 异桥相间短路　；参考：《中国电机工程学报》2017年03期

【摘要】：十二相整流同步发电机系统在移动平台已得到广泛应用。出于对系统安全运行问题的全面考虑,该文分析了该系统中一种特殊的定子内部短路故障——异桥相间短路。考虑到故障相所在的两组三相绕组之间故障附加回路的特殊拓扑结构及其对整流桥换相模式的影响,该文对原有的十二相整流发电机多回路数学模型进行了扩充,用来计算异桥相间短路的定、转子绕组及整流桥直流侧负载电压、电流等电气量,并通过样机实验,验证了计算结果的准确性。基于仿真与实验结果,分析了十二相整流发电机定子绕组异桥相间短路故障的电气特点,特别指出其短路回路电流等故障量随直流侧负载电阻增大而减小,为这种特殊故障的危害评估及保护研究提供了依据。
[Abstract]:Twelve-phase rectifier synchronous generator system has been widely used in mobile platform. In order to solve the problem of safe operation of the system, this paper analyzes a special short-circuit fault in the stator, which is called "different bridge short-circuit". Considering the special topology of the fault additional circuit between two sets of three-phase windings and its influence on commutation mode of rectifier bridge, this paper extends the original mathematical model of multi-loop of 12-phase rectifier generator. It is used to calculate the electrical quantities such as the stator, rotor winding and DC side load voltage and current of the bridge. The accuracy of the calculation results is verified by the experiment of the prototype. Based on the simulation and experimental results, the electrical characteristics of the cross-bridge fault in the stator windings of the 12-phase rectifier generator are analyzed. It is especially pointed out that the fault amount such as the short-circuit current decreases with the increase of the DC side load resistance. It provides the basis for hazard assessment and protection research of this special fault.
【作者单位】：电力系统及发电设备控制和仿真国家重点实验室(清华大学电机系);舰船综合电力技术国防科技重点实验室(海军工程大学);
【基金】：国家自然科学基金项目(51277103)~~
【分类号】：TM31

【参考文献】