This paper presents a unique design for flying capacitor type multilevel inverters with fault-tolerant features. When a single-switch fault per phase occurs, the new design can still provide the same number of converting levels by shorting the fault power semiconductors and reconfiguring the gate controls. The most attractive point of the proposed design is that it can undertake the single-switch fault per phase without scarifying power converting quality. This paper also discusses the capacitor balancing approach under fault-conditions, which is an essential part of controlling flying capacitor type multilevel inverters. Suggested fault diagnosing methods are also discussed in this paper. Computer simulation and lab results validate the proposed controls.
X. Kou et al., "A Unique Fault-tolerant Design for Flying Capacitor Multilevel Inverters," Proceedings of the IEEE International Electric Machines and Drives Conference, 2003. IEMDC'03, Institute of Electrical and Electronics Engineers (IEEE), Jan 2003.
The definitive version is available at https://doi.org/10.1109/IEMDC.2003.1211314
IEEE International Electric Machines and Drives Conference, 2003. IEMDC'03
Electrical and Computer Engineering
Keywords and Phrases
375 V; 60 Hz; Capacitor Balancing Approach; Capacitors; Computer Simulation; Fault Diagnosing Methods; Fault Diagnosis; Fault Location; Fault Power Semiconductors Shorting; Fault Tolerance; Fault-Tolerant Design; Flying Capacitor Multilevel Inverters; Flying Capacitor Type Multilevel Inverters; Gate Controls Reconfiguration; Invertors; Power Converting Quality; Power Semiconductor Devices; Single-Switch Fault Per Phase
International Standard Book Number (ISBN)
Article - Conference proceedings
© 2003 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.
01 Jan 2003