Fault Diagnosis and Phase Disposition Reconfiguration of a 5-Level Double-Boost Power Factor Corrector with Fault-Tolerant Capability  

作　　者：Thi Thuy Linh Pham Frederic Richardeau Guillaume Gateau 

机构地区：[1]Plasma and Energy Conversion Lab （LAPLACE）, University of Toulouse, Toulouse F-31071, France [2]Scientific Research National Center （CNRS）, Toulouse F-31071, France

出　　处：《Journal of Energy and Power Engineering》2012年第3期418-424,共7页能源与动力工程（美国大卫英文）

摘　　要：A 5-level PFC （power factor correction） topology with fault-diagnostic and fault-tolerant capability is proposed and compared to known structures. It is derived from a 3-level non differential double-boost PFC including fly-cap cells. The series-connection of the two low-voltage switching-cells is decoupled by a single flying capacitor that provides a direct fault-tolerant capability and a post-failure operation increasing the availability of converter. The monitoring of the voltages across flying capacitors allows a rapid detection and localization either for open circuit failure or short-circuits failure. A PWM （pulse width modulation） phase-disposition type reconfiguration is also used and presented in order to optimize both normal operation and post-fault continuation. The design and the most important features are highlighted thanks to a digital control frame and a mock-up rated to： AC voltage network 115 V-load 400 V-nominal power 4 kW-switching frequency 62 kHz.

关 键 词：PFC （power factor correction） multilevel converter fault tolerant capability diagnosis. 

分 类 号：TN86[电子电信—信息与通信工程] TP273[自动化与计算机技术—检测技术与自动化装置]