Online Failure Diagnostic in Full-Bridge Module for Optimum Setup of an IGBT-Based Multilevel Inverter

Iglesias-Rojas, Juan Carlos; Velázquez-Lozada, Erick; Baca-Arroyo, Roberto

doi:10.3390/en15145203

Cited by 3 publications

(2 citation statements)

References 23 publications

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“…Thus, malfunctions or failures in power electronic converters have been extensively researched over the last few decades, mainly dedicated to the permanent failures of power semiconductors. Some of the most common solutions to detect permanent failures in power semiconductors can be found in [15][16][17][18][19][20][21][22][23][24][25][26][27]. Many other works dedicated to fault diagnosis can be found in the literature considering other systems and applications such as mechanical devices or machines [28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Incipient Fault Diagnosis of a Grid-Connected T-Type Multilevel Inverter Using Multilayer Perceptron and Walsh Transform

et al. 2023

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This article deals with fault detection and the classification of incipient and intermittent open-transistor faults in grid-connected three-level T-type inverters. Normally, open-transistor detection algorithms are developed for permanent faults. Nevertheless, the difficulty to detect incipient and intermittent faults is much greater, and appropriate methods are required. This requirement is due to the fact that over time, its repetition may lead to permanent failures that may lead to irreversible degradation. Therefore, the early detection of these failures is very important to ensure the reliability of the system and avoid unscheduled stops. For diagnosing these incipient and intermittent faults, a novel method based on a Walsh transform combined with a multilayer perceptron (MLP)-based classifier is proposed in this paper. This non-classical approach of using the Walsh transform not only allows accurate detections but is also very fast. This last characteristic is very important in these applications due to their practical implementation. The proposed method includes two main steps. First, the acquired AC currents are used by the control system and processed using the Walsh transform. This results in detailed information used to potentially identify open-transistor faults. Then, such information is processed using the MLP to finally determine whether a fault is present or not. Several experiments are conducted with different types of incipient transistor faults to create a relevant dataset.

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Section: Introductionmentioning

confidence: 99%

Incipient Fault Diagnosis of a Grid-Connected T-Type Multilevel Inverter Using Multilayer Perceptron and Walsh Transform

et al. 2023

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“…In [22], the operation conditions of the hybrid DC breaker proposed by a major manufacturer [23] are evaluated; light is cast on the energy absorption by the metal oxide surge arresters (MOSA), during the interruption of different values of fault current, and on the electrical and thermal stress on the IGBT valve. In [24], an online failure diagnostic test for the full-bridge module used in an MMC is proposed. A short-circuit current diagnostic topology based on an integrated circuit is presented, and its performances in response to common IGBT power module failure mechanisms are analyzed.…”

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confidence: 99%