航空Vienna整流器故障诊断与容错控制  

Fault Diagnosis and Fault Tolerant Control for Aviation Vienna Rectifier

作　　者：郝振洋[1] 徐子梁 陈宇[1] 任小永[1] 张之梁[1] Hao Zhenyang;Xu Ziliang;Chen Yu;Ren Xiaoyong;Zhang Zhiliang(Jiangsu Key Laboratory of New Energy Generation and Power Conversion Nanjing University of Aeronautics and Astronautics,Nanjing 210016 China)

机构地区：[1]南京航空航天大学江苏省新能源发电与电能变换重点实验室,南京210016

出　　处：《电工技术学报》2020年第24期5152-5163,共12页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金资助项目(51777093)。

摘　　要：Vienna整流器因其高效率、高功率密度等优点得到广泛的关注,为满足航空应用中高可靠性的要求,研究Vienna整流器故障诊断和容错控制非常有必要。该文通过分析Vienna整流器在单个开关管开路故障情况下输入电流的特点,首先提出一种基于固定相位电流变化率的故障诊断方案;然后对等效空间矢量脉宽调制(SVPWM)方式下故障情况的矢量特性进行分析,提出一种通过矢量替代与合成,实现在大部分区域维持三电平运行,小部分区域转化为不控整流运行的容错控制策略;最后通过仿真和实验验证了所提策略的可行性。Vienna rectifier has a wide application and is suitable for aircrafts for its high efficiency and high power density.To meet the high reliability requirements in aviation applications,it is necessary to study the fault diagnosis and tolerant control of the Vienna rectifier.In this paper,by analyzing the characteristics of the input current when open-circuit fault occurs,a novel fault diagnosis method based on current changing rate at fixed phase angle was proposed.Corresponding fault tolerant control was also studied.Then the vectors of faults in the equivalent space vector pulse width modulation(SVPWM)were analyzed,and a novel fault tolerant control was realized by substituting and synthesizing the failed vectors.It can maintain three-level operation in most regions and uncontrolled rectifying operation in few regions.The simulation and experimental results proved the effectiveness of the theoretical analysis.

关 键 词：VIENNA整流器 故障诊断 容错控制 空间矢量脉宽调制(SVPWM) 

分 类 号：TM46[电气工程—电器]