Fault diagnosis in non-isolated bidirectional half-bridge DC-DC converters

Ribeiro, E.; Cardoso, António J. Marques; Boccaletti, C.

doi:10.1109/iecon.2014.7049174

Cited by 8 publications

(8 citation statements)

References 21 publications

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“…However, the effectiveness of most FD schemes has been studied under CCM due to ease of implementation. Without using extra sensor, the authors have used I L , output voltage V OUT and input voltage V IN to detect switch OCF regardless of the operating mode for all types of unidirectional non isolated DC-DC converters [23] and bidirectional half-bridge DC-DC converters [24]. A block diagram of the FD method in [23] for Buck converter is given in Figure 11.…”

Section: ) Limit Checking Methodsmentioning

confidence: 99%

A Comprehensive Review of Fault Diagnosis and Tolerant Control in DC-DC Converters for DC Microgrids

Khan

Wen

2021

IEEE Access

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As the power interface between the energy storage devices (ESD) and the dc link of DC Micro-grids, dc-dc converters, which have been regarded as the heart of many critical applications such as electrical vehicles, data center, and aerospace power systems, have gained more and more attentions recently. The fault diagnosis and tolerant control in dc-dc converters become essential to ensure a reliable and robust power system especially for critical applicants, where a sudden stoppage, loss of functionality, or degradation of performance might result in a catastrophe. This paper focuses on different types of faults in dc-dc converters by analyzing main failure spots and mechanism, covering catastrophic fault and parametric fault from component to system. A comprehensive review of the up-to-date fault mode analysis, fault diagnosis signals and algorithms, and fault tolerant control in various dc-dc topologies has been presented. This research will provide a useful design guideline for the reliability improvement in all forms of dc-dc converters.

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Section: ) Limit Checking Methodsmentioning

confidence: 99%

A Comprehensive Review of Fault Diagnosis and Tolerant Control in DC-DC Converters for DC Microgrids

Khan

Wen

2021

IEEE Access

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“…With the help of gating signals information, several approaches are developed based on sampling the magnitude of inductor current at falling and rising edges. Minute changes in the fault diagnostic algorithms were made and it was successfully implemented in non‐isolated bidirectional DC–DC converters [46], multi‐input DC–DC converters [47], interleaved DC–DC converters [48], and in non‐isolated unidirectional DC–DC converters [49]. The logical relationship between the current magnitude measured at falling and rising edges of gating signals are concerned by OCFs in converter switches as depicted in Fig.…”

Section: Fault Diagnostic Algorithmsmentioning

confidence: 99%

Review on fault‐diagnosis and fault‐tolerance for DC–DC converters

Kumar

Elangovan

2020

IET Power Electronics

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The DC-DC converters operate extensively in a variety of industrial applications such as electric vehicles, renewable energy systems, aerospace applications, consumer electronics (smartphones, laptops, etc.) and energy storage solutions. The reliability of the DC-DC converters is of a greater significance. The research endeavours made in enhancing the reliability of the DC-DC converters are still very limited and dispersed. Due to the rapid growth in semiconductor technology, the DC-DC converters have an endless number of topologies, with various operating principles and functionalities. Enhancement of the reliability of all types of DC-DC converters is still a challenging task. Power switches are the most fragile components in converter circuits, which inherently fall prey to the faults occurring in the system. Hence, there is always a requirement to take appropriate remedial measures to deal with all kinds of faults. Further, in order to detect the occurrence of fault a fast faultdiagnosis and fault-tolerant strategies in the DC-DC converters is mandatory and the same has to be embedded in the converter for safety purpose. In view of the importance of the same, the fault-diagnostic algorithms and fault-tolerant strategies developed in the literature, by various researchers are furnished in a single document after conducting an exhaustive review.

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“…Alternative approaches, based on the same diagnostic variable, take advantage of the gating signals information to sample the amplitude of the inductor current at the rising and falling edges. Variations of the fault diagnostic algorithm were successfully employed in a multi-input DC-DC converter [14] , non-isolated bidirectional DC-DC converter [15] , non-isolated unidirectional DC-DC converter [16] , and in an interleaved DC-DC boost converter [17] . As confirmed in Fig.…”

Section: Time Domain Signal Processing Based Algorithmsmentioning

confidence: 99%

“…5, the logical relations between the current amplitude measured at the rising and falling edges of the gating signals are affected by OC faults in the converter switches. Indeed, it is a behaviour observed in all aforementioned converter topologies [14][15][16][17]. Current amplitude also provides sufficient information for diagnostic of faults in parallel-connected single active bridge(SAB) DC-DC converters [18] .…”

Section: Time Domain Signal Processing Based Algorithmsmentioning

confidence: 99%

A comprehensive survey on fault diagnosis and fault tolerance of DC-DC converters

2018

Chin. J. Electr. Eng.

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DC-DC converters are becoming more commonly used in power conversion solutions for energy management purposes, being employed in an ever-increasing range of DC-based applications, such as LED lighting, electric vehicles, energy storage solutions, and consumer electronics (laptops, smartphones, etc.). In this context, efficiency and reliability are critical. The research efforts made in improving reliability of DC-DC converters are still quite narrow and scattered. Moreover, DC-DC converters take the shape of an endless number of topologies, with different functionalities and operation principles, thus complicating the task of improving reliability of all forms of DC-DC converters. Consequently, compiling the information about the main failure modes, corresponding fault diagnostic algorithms and fault tolerance strategies developed so far, in a single document, becomes increasingly necessary. Accordingly, this paper presents an up-to-date review of the recent achievements attained regarding the improvement of availability and reliability of DC-DC converters.

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Fault diagnosis in non-isolated bidirectional half-bridge DC-DC converters

Cited by 8 publications

References 21 publications

A Comprehensive Review of Fault Diagnosis and Tolerant Control in DC-DC Converters for DC Microgrids

A Comprehensive Review of Fault Diagnosis and Tolerant Control in DC-DC Converters for DC Microgrids

Review on fault‐diagnosis and fault‐tolerance for DC–DC converters

A comprehensive survey on fault diagnosis and fault tolerance of DC-DC converters

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