中国电机工程学报2017，Vol.37Issue(3)：889-897,9.DOI:10.13334/j.0258-8013.pcsee.161252
十二相整流同步发电机系统异桥相间短路的故障分析
Analysis of Stator Internal Phase-to-Phase Short Circuit Between Different Bridge-Rectifiers in the 12-Phase Synchronous Generator With Rectifier-Load System
摘要
Abstract
The 12-phase synchronous generator-rectifier- load systems have been widely used in the mobile platform. For the safe operation of the system, this paper analyzed the internal phase-to-phase short circuit fault between different bridge-rectifiers, which is a special type of the stator internal fault in the multiphase system. Considering the special topology of the additional short circuit loop between the two groups of three-phase windings where the fault is located, as well as the variation of the commutation mode of the bridge-rectifier, this paper extended the existing multi-loop mathematical model of 12-phase synchronous generator- rectifier-load system, to calculate electrical quantities including the voltages and currents of stator windings and the rotor windings, and the output voltages of the bridge-rectifiers under the faults. With the experiments on a 12 phase model machine, the accuracy of the simulation results was verified. Based on the simulation and experiment results, this paper analyzed the electrical characteristics of the stator internal phase-to-phase faults between different bridge-rectifiers in the 12-phase machine system. It is especially indicated that the currents of the short circuit loop and some phases in the AC side would decrease as the resistance of the DC load increases. This paper provides the basis for risk assessment and fault protection for the special internal faults in the 12-phase generator-rectifier- load systems.关键词
十二相整流同步发电机/异桥相间短路/故障电流/多回路数学模型/金属性短路Key words
KEY WORDS: 12-phase synchronous generator with rectifierload/stator internal phase-to-phase short circuit between different bridge-rectifiers/fault current/multi-loop mathematical model/metallic short circuit分类
信息技术与安全科学引用本文复制引用
孙宇光,黄子果,魏锟,余锡文..十二相整流同步发电机系统异桥相间短路的故障分析[J].中国电机工程学报,2017,37(3):889-897,9.基金项目
国家自然科学基金项目(51277103). Project Supported by National Natural Science Foundation of China (51277103). （51277103）
