A Linear Observer Design for Fast Open Switch Fault Detection of Interleaved Boost Converters

This paper proposes a fault detection, identification, and reconfiguration approach for an open switch fault (OCF)for the interleaved DC-DC boost converter (IBC). The proposed technique is based on a state space observer nonlinear model with a linear design. The main idea is based on evaluating the...

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Bibliographic Details
Published in2023 IEEE 2nd Industrial Electronics Society Annual On-Line Conference (ONCON) pp. 1 - 6
Main Authors Badaoui, Yacine, Djamel, Ayad Ahmed, Gouichiche, Abdelmadjid, Safa, Ahmed, Chibani, Abdelilah
Format Conference Proceeding
LanguageEnglish
Published IEEE 08.12.2023
Subjects
Electrical fault detection
Fault detection
Fault diagnosis
IBC
Observer
Observers
OCF
Residual vector
Simulation
Switches
Switching circuits
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Summary:This paper proposes a fault detection, identification, and reconfiguration approach for an open switch fault (OCF)for the interleaved DC-DC boost converter (IBC). The proposed technique is based on a state space observer nonlinear model with a linear design. The main idea is based on evaluating the residual vector created by comparing the real and the estimated inductor phase currents. The chosen observer model with the linear design and the adopted control system of the IBC will result in a very fast fault detection time using just the sensed variables of the circuit. Moreover, a thresholding strategy is adopted and tested under several conditions to avoid false diagnosis cases. The effectiveness of the proposed method for one or more open switch faults has been verified by simulation for three and five interleaved boost converters.
DOI:10.1109/ONCON60463.2023.10430633