Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/141605
Title: An open-circuit fault diagnosis approach for single-phase three-level neutral-point-clamped converters
Authors: Ge, Xinglai
Pu, Junkai
Gou, Bin
Liu, Yong-Chao
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2017
Source: Ge, X., Pu, J., Gou, B., & Liu, Y.-C. (2018). An open-circuit fault diagnosis approach for single-phase three-level neutral-point-clamped converters. IEEE Transactions on Power Electronics, 33(3), 2559-2570. doi:10.1109/TPEL.2017.2691804
Journal: IEEE Transactions on Power Electronics
Abstract: This paper presents a model-based open-circuit fault diagnosis approach for single-phase three-level neutral-point-clamped (3LNPC) converters in electric railway application. The diagnosis algorithm, which only requires the signals existing in the control system, not only detects open-circuit faults but also identifies the faulty device among the transistors and clamping diodes. The mixed logical dynamic (MLD) model of the converter is built to estimate the grid current. The residual generated from the measured current subtracting the estimated one is analyzed under different open-circuit faults. According to the characteristics of the residual changing rate, the proposed approach allows fault localization. The proposed method is effective both in traction and regenerative braking operation and has fast diagnosis speed. Hardware-in-the-loop (HIL) experiments are carried out to verify the effectiveness of the proposed fault diagnosis algorithm.
URI: https://hdl.handle.net/10356/141605
ISSN: 0885-8993
DOI: 10.1109/TPEL.2017.2691804
Rights: © 2017 IEEE. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:EEE Journal Articles

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