In recent years, the reliability requirements of active neutral-point-clamped (ANPC) three-level converter are getting higher and higher with its large-scale application. In order to overcome the problem of the limited fault-tolerant capability of the basic ANPC three-level converter when compound faults occur, an improved fault-tolerant topology based on component sharing was proposed in this paper. Compared with the basic ANPC three-level converter topology, two bidirectional thyristors and a double-pole double-throw switch are added to each phase, which can realize Fault-Tolerant Control (FTC) for multiple fault types and greatly improve the reliability with small additional costs. The corresponding self-diagnosis FTC algorithm composed of topology reconfiguration module, switch state generation module, and PWM output control module is also put forward. With the real-time generation of switch state, the reconfiguration of fault-tolerant topology is easy to realize and adaptable. Finally, the effectiveness and feasibility of the proposed topology and FTC algorithm are verified by simulation and experimental results.
Research on the Improved Fault-Tolerant Control of ANPC Three-Level Converter
Lect. Notes Electrical Eng.
International Conference on Electrical and Information Technologies for Rail Transportation ; 2019 ; Qingdao, China October 25, 2019 - October 27, 2019
Proceedings of the 4th International Conference on Electrical and Information Technologies for Rail Transportation (EITRT) 2019 ; Chapter : 41 ; 425-437
2020-04-08
13 pages
Article/Chapter (Book)
Electronic Resource
English
Active neutral-point-clamped converter , Fault-tolerant control , Self-diagnosis , Topology reconfiguration , Switch state generation Engineering , Transportation Technology and Traffic Engineering , Computational Intelligence , Control and Systems Theory , Information Systems Applications (incl. Internet)
Research on the Improved Fault-Tolerant Control of ANPC Three-Level Converter
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