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。

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

Abstract:

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 fault-tolerant 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.

Key words: Switch Reluctance Generation(SRG)system, power converter, fault-tolerant, open-circuit fault, output voltage

中图分类号: 

• TP391