Reliability of Power Electronic Systems: An Industry Perspective

Falck, Johannes; Felgemacher, Christian; Rojko, Andreja; Liserre, Marco; Zacharias, Peter

doi:10.1109/mie.2018.2825481

Cited by 234 publications

(128 citation statements)

References 29 publications

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“…Despite significant improvements, semiconductor devices are still the power electronic converter components most susceptible to failure [1]. The reasons of failures and the failure type can vary, with strong dependence on the application area and operating conditions.…”

Section: Analyzed Failure Modesmentioning

confidence: 99%

“…Increased dependability on power electronic systems in various application areas has made their reliable operation over their designed lifetime an essential factor. Depending on the operation conditions, various stresses like temperature, humidity, and vibration affect the reliability of the power electronic system [1]. Normal operation depends on a high number of fragile components, while failure in one of those can lead to loss of functionality, increased downtime, and maintenance costs.…”

Section: Introductionmentioning

confidence: 99%

“…The use of redundant switches assumes appropriate converter topology reconfiguration in the case of certain types of failure and relies on precise fault diagnosis after one occurs. Despite the increased price of such systems, in certain application areas, like power supply, energy transmission, or aircraft, these extra costs can be accepted [1].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Analysis of Fault-Tolerant Operation Capabilities of an Isolated Bidirectional Current-Source DC–DC Converter

et al. 2019

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Reliable and predictable operation of power electronics is of increasing importance due to continuously growing penetration of such systems in industrial applications. This article focuses on the fault-tolerant operation of the bidirectional secondary-modulated current-source DC–DC converter. The study analyzes possible topology reconfigurations in case an open- or short-circuit condition occurs in one of the semiconductor devices. In addition, multi-mode operation based on topology-morphing is evaluated to extend the operating range of the case study topology. The influence of post-failure modes on the functionality and performance is analyzed with a 300 W converter prototype. It is demonstrated that failure of one transistor in the current-source side can be mitigated without dramatic loss in the efficiency at maximum power, while preserving bidirectional operation capability.

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Section: Analyzed Failure Modesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Analysis of Fault-Tolerant Operation Capabilities of an Isolated Bidirectional Current-Source DC–DC Converter

et al. 2019

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“…To obtain an overview of the reliability related issues relevant for power electronic systems an industry-wide survey was conducted with collaboration of the network of European Companies in Power Electronics (ECPE) [40]. …”

Section: Industry Perspectivementioning

confidence: 99%

Active methods to improve reliability in power electronics

Falck

Andresen

Liserre

2017

IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society

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Abstract-Reliability of power electronics is a critical issue, as most of the electrical energy is processed by power electronics. Various stressors impact the safe operation of the systems, including harsh environments, temperature variations, humidity, vibration and radiation. Physics of failure analysis uses models that describe how failure mechanisms evolve over time and induce failures. Active methods help to increase the reliability during operation. These methods rely on intelligent control that help to avoid operation conditions that affect stress that lead to failures. This paper provides an overview on recent active methods to increase the reliability of power electronics and categorizes them according to their impact on reliability, invasiveness to system operation and open research opportunities. An industry perspective taken from a survey in the end of 2016 is included to rate how promising the different methods are considered.

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“…Such applications typically employ a low-voltage battery (24-48 V nominal) and are charged from the AC grid with power up to 1 kW [6][7][8][9][10]. The chargers generally include two-stage ac-dc converters with a power factor pre-regulator (PFP) that is followed by a dc-dc converter [11][12][13] Such systems generally include a DC-bus formed by high voltage (>350 V) electrolytic capacitors [14,15], which are among the most critical parts of power electronic converters in terms of reliability [16].…”

Section: Introductionmentioning

confidence: 99%

Modular Battery Charger for Light Electric Vehicles

et al. 2020

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Rapid developments in energy storage and conversion technologies have led to the proliferation of low-and medium-power electric vehicles. Their regular operation typically requires an on-board battery charger that features small dimensions, high efficiency and power quality. This paper analyses an interleaved step-down single-ended primary-inductor converter (SEPIC) operating in the discontinuous conduction mode (DCM) for charging of battery-powered light electric vehicles such as an electric wheelchair. The required characteristics are achieved thanks to favourable arrangement of the inductors in the circuit: the input inductor is used for power factor correction (PFC) without additional elements, while the other inductor is used to provide galvanic isolation and required voltage conversion ratio. A modular interleaved structure of the converter helps to implement low-profile converter design with standard components, distribute the power losses and improve the performance. An optimal number of converter cells was estimated. The converter uses a simple control algorithm for constant current and constant voltage charging modes. To reduce the energy losses, synchronous rectification along with a common regenerative snubber circuit was implemented. The proposed charger concept was verified with a developed 230 VAC to 29.4 VDC experimental prototype that has proved its effectiveness.

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Reliability of Power Electronic Systems: An Industry Perspective

Cited by 234 publications

References 29 publications

Analysis of Fault-Tolerant Operation Capabilities of an Isolated Bidirectional Current-Source DC–DC Converter

Analysis of Fault-Tolerant Operation Capabilities of an Isolated Bidirectional Current-Source DC–DC Converter

Active methods to improve reliability in power electronics

Modular Battery Charger for Light Electric Vehicles

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