Open-Circuit Fault Detection and Location in AC - DC - AC Converters Based on Entropy Analysis

Cristina Morel () and Ahmad Akrad
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Cristina Morel: Ecole Supérieure des Techniques Aéronautiques et de Construction Automobile, ESTACA’Lab Paris-Saclay, 12 Avenue Paul Delouvrier–RD10, 78180 Montigny-le-Bretonneux, France
Ahmad Akrad: Ecole Supérieure des Techniques Aéronautiques et de Construction Automobile, ESTACA’Lab Paris-Saclay, 12 Avenue Paul Delouvrier–RD10, 78180 Montigny-le-Bretonneux, France

Energies, 2023, vol. 16, issue 4, 1-20

Abstract: Inverters and converters contain more and more power electronics switches which may subsequently affect their reliability. Therefore, fault detection and location are essential to improve their reliability and to ensure continuous operation. In this paper, an A C − D C − A C converter with three-phase inverter is investigated under permanent, single and multiple open-circuit fault scenarios. Many entropies and multiscale entropies are then proposed to evaluate the complexity of the output currents by quantifying their entropies over a range of temporal scales. Among the multitude of entropies, only some entropies are able to differentiate healthy from open-circuit faulty conditions. Moreover, the simulation results show that these entropies are able to detect and locate the arms of the bridge with open-circuit faults.

Keywords: open-circuit; inverter; entropy; multiscale entropy; fault detection and location (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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