多相混联式整流发电机系统直流侧短路电流  

Currents of sudden DC-side short circuit of multiphase generator-rectifier system with series-parallel connection

作　　者：郭云珺[1] 王东[1] 易新强[1] GUO Yun-jun;WANG Dong;YI Xin-qiang(National Key Laboratory of Science and Technology on Vessel Integrated Power System,Naval University of Engineering,Wuhan 430033,China)

机构地区：[1]海军工程大学舰船综合电力技术国防科技重点实验室,武汉430033

出　　处：《电机与控制学报》2018年第10期87-92,共6页Electric Machines and Control

基　　金：国家自然科学基金(51137005;51377086);国家973项目(2013CB035601)

摘　　要：针对多相混联式整流发电机系统直流侧突然短路的问题,以十二相整流发电机系统为例,分析了十二相整流输出端不同联接方式,并推导了交流侧短路电流的解析表达式和不同串并混联方式下的多相整流系统直流侧短路电流,进而获得了各种联接方式下直流侧短路电流的解析表达式,总结归纳出了相应联接方式下的直流侧和交流侧短路电流比值范围,结果表明,即使均采用"两并两串"方式,但不同串并组合时的直流侧短路电流峰值是不同的;通过有限元仿真和样机试验验证了理论分析结果的正确性,为舰船电力系统开关保护装置的合理选择和设计提供了指导,研究方法可推广至其他多相整流发电机在任意混联拓扑输出方式下的直流侧短路电流分析。Taking the sudden DC-side short circuit of 12-phase generator-rectifier system for example,the currents of sudden DC-side short circuit of multiphase generator-rectifier system with different series-parallel connections were analyzed on the basis of the analysis of AC-side short circuit,and the complete expressions of DC-side short-circuit currents with different series-parallel connections were derived by making an analytical approach,and the ratio ranges of DC short-circuit current and AC short-circuit current were deduced and summarized.The results show that the DC short-circuit peak currents with different series-parallel combination modes of multiphase generator-rectifier system are different,even though the connections with two sets of parallel and two sets of series are all used.Comparisons with the simulated and experimental results demonstrate the validity of the theoretical approach developed.The conclusions provide the theories guidance for the reasonable selection and design of switch protection device in the vessel power system.The method of analysis can be applied to other multiphase generator-rectifier systems with arbitrary series-parallel connection.

关 键 词：多相整流发电机 任意串并混联 直流侧短路 解析表达式 电流峰值比 

分 类 号：TM343[电气工程—电机]