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

Abstract

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.

An analysis of voltage source inverter switches fault classification using short time Fourier transform

“…As a single failure in the converter components will result in a fault in the overall system, the system reliability of these converters is critical [7]- [15]. As a result, in several crucial procedures, the VSI must be able to operate continuously even under malfunctioning situations [16]- [19]. Semiconductor switches and aluminium capacitors are the two most critical components of a voltage source inverter.…”

“…Previous model-based techniques, on the other hand, are susceptible to system characteristics and have limited detection accuracy [73]- [75]. Prior knowledge regarding converter specifications (parasitic resistances, inductances, capacitances) is critical for the improvement of model-based algorithms, but difficult to gain from the existing system [16], [44], [76]. Shahbazi et al [49] proposed a model-based approach for detection of fault using a field-programmable gate array (FPGA) based on time and voltage criteria.…”

Fault Analysis and Non-Redundant Fault Tolerance in 3-Level Double Conversion UPS Systems Using Finite-Control-Set Model Predictive Control

“…Several fault-tolerant approaches have been proposed to correct semiconductor faults in power electronics converters over the years [2][3][4][5][6][7][8][9]. These approaches can be classified into two fundamental types: redundant and non-redundant.…”

Real-Time Fault Detection to Ensure the Safe Operation of the Single-Phase Five-Level VIENNA Rectifier

“…Various fault diagnosis approaches are developed to confront the switch fault in power converts, some of which are briefly compared in [21]. These methods prevent further damage or provide continuous service by applying an FT strategy based on redundancy or reconfiguration.…”