Fault-tolerant Techniques of NPC Three-level Inverter
Chen Jing1, Chen Huan2
1. School of Physics and Electronic Electrical Engineering, Huaiyin Normal University, Huaian, Jiangsu 223300; 2. College of Electrical and Information Engineering, Hu’nan University of Technology, Zhuzhou, Hu’nan 412000
Abstract：For fault of high power variable frequency drive system, tolerant-control technology of three level inverter was studied. Firstly, based on voltage space vector diagram, inherent fault tolerance of three level inverter on open-circuit and short-circuit fault was analyzed. Then, three kinds of fault tolerant topology switch redundancy, phase redundancy and ANPC, and characteristics of each control strategy are put forward, which lays a theoretical foundation for experimental research.
[1] 张兰红, 胡育文, 黄文新. 三相变频驱动系统中逆变器的故障诊断与容错技术[J]. 电工技术学报, 2004, 19(12): 1-9. [2] 安群涛. 容错三相四开关逆变器控制策略[J]. 中国电机工程学报, 2010, 30(3): 14-20. [3] S. Ceballos. Three-level converter topologies with switch breakdown fault-tolerance capability[J]. IEEE Transactions on Industrial Electronics, 2008, 55(3): 982-995. [4] Jung-Dae Lee. A novel fault detection of an open- switch fault in the NPC inverter system[J]. IEEE Transactions on Industry Applications, 2007, 8(1): 1565-1569. [5] Edison R. da silva, Wellington S. Lima. Detection and compensation of switch faults in a three level inverter[J]. IEEE Transactions on Power Electronics, 2005, 12(1): 167-171. [6] Shengming Li, Longya Xu, Longya Xu. Strategies of fault tolerant operation for three-level PWM inverters[J]. IEEE Transactions on Power Electronics, 2006, 21(4): 933-940. [7] T. Bruckner, S. Bernet, H. Guildner.The active NPC converter and its loss-balnacing Control[J]. IEEE Transactions on Power Electronics, 2005, 52(3): 855-868. [8] Jun Li. Three-level active neutral-point-clamped (ANPC) converter with fault tolerant ability[J]. IEEE Transactions on Power Electronics, 2009, 11(2): 840-845. [9] Thomas Bruckner, Steffen Bernet.Feedforward loss control of three-level active NPC converters[J]. IEEE Transactions on Industry Applications, 2007, 43(6): 1588-1596.
2013, Vol. 14 
