功率变换器的容错设计及验证  

Fault-tolerance Design and Validation of Power Converter

作　　者：周政[1] 刘勇智[1] 宋金龙[1] 马卫民 王真亮 

机构地区：[1]空军工程大学航空航天工程学院 [2]94354部队 [3]航空大学95926部队

出　　处：《计算机工程》2017年第2期120-123,130,共5页Computer Engineering

摘　　要：为提高航空开关磁阻发电系统的可靠性,对系统中功率变换器常见的开路故障进行分析。结合不对称半桥式功率变换器各相独立的优势,设计一种容错型功率变换器。利用空闲相功率器件代替故障相功率器件实现功率变换器的开路故障容错。搭建容错型开关磁阻起动/发电系统的仿真实验平台和硬件实验平台进行实验验证,结果表明,该容错型功率变换器具有较好的容错性能,容错后系统的输出电压最大脉动幅度在6 V以内,满足标准的要求。In order to improve the reliability of the Switch Reluctance Generation（SRG） system,several common failures of power converter are analyzed.Combined with the superiority of the independence of asymmetrical bridge power converter,a kind of fault-tolerant power converter is devised.The fault-tolerance power converter makes use of the free-phase power tubes to replace the fault-phase power tubes.A hardware platform and a simulation platform of faulttolerant switch reluctance starter/generator system are established to validate.Simulation and experiment results show that fault-tolerant power converter has great fault-tolerant performance and the maximum amplitude of the output voltage is less than 6 V which meets the requirements of relevant standard.

关 键 词：开关磁阻发电系统 功率变换器 容错性 开路故障 输出电压 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]