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| 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 |
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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.
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Published: 23 January 2014
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2013, Vol. 14 
