Fault Diagnosis and Fault-Tolerant Control Operation of Nonisolated DC–DC Converters

Pazouki, Elham; Sözer, Yilmaz; Abreu-Garcı́a, J.A. De

doi:10.1109/tia.2017.2751547

Cited by 69 publications

(24 citation statements)

References 25 publications

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“…Based on the modulation of particular DC-DC converter, the inductor current derivative is applied to provide analytical current emulator model for fault identification and diagnosis in boost converter [85,86]. However, this method can be extended to other non-isolated converters including buck, buck-boost, Cuk, SEPIC.…”

Section: Model-based 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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Section: Model-based 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 traditional non-isolated DC-DC converters faults, such as OCF (open-circuit fault) and SCF (shortcircuit fault) of switch and diode, have been widely studied. For example, fast diagnosis methods for switch faults in traditional Buck circuits were investigated in Ref [3,4] . Fault diagnoses of matrix converters were studied in Ref [5][6][7] and fault diagnoses of multi-level DC-DC converters were studied in Ref [8][9][10][11][12][13] .…”

Section: Introductionmentioning

confidence: 99%

Online Fault Diagnosis Method for High-Performance Converters Using Inductor Voltage Polar Signatures

2020

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Recently, the high-performance converter with wide range and high gain has been widely used in these cases such as PV power generation. On the other hand, there are more highly variable stresses on switch and diode in high-performance converter than the traditional DC-DC converters due to the wide range and high gain. Therefore, it is necessary to diagnose switch and diode faults in high-performance converter. In this paper, the switch and diode fault are analyzed and compared with traditional DC-DC converters. Then, an online diagnosis technique based on the inductor voltage polarity of the DC-DC converter is proposed. This technique only uses the inductor voltage polarity and the switch gate drive signal as signatures to diagnose short-circuit or open-circuit fault of the switch and diode. The technique is cost-effective and simple because it uses simple auxiliary windings to sense the inductor voltage polar and uses some logic circuit to generate indicators. The details of the technique are discussed through an example of the quadratic Boost converter. Experiments illustrate the correctness of the proposed technique and show its capability for switch and diode fault diagnosis.

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“…Since the chopper and the inverter are controlled separately, the aftereffects of a fault occurring in semiconductors of these subsystems may be easily accommodated. A robust fault‐tolerant control approach for faulty switches in DC–DC converters is presented in [7, 8], while a four‐switch 3‐phase fault‐tolerant structure for switch device faults in the 3‐phase inverter is proposed in [9]. However, the faults in an uncontrolled rectifier cannot be accommodated by existing controllers.…”

Section: Introductionmentioning

confidence: 99%