Active Thermal Control of GaN-Based DC/DC Converter

Prasobhu, Pramod Kumar; Raveendran, Vivek; Buticchi, Giampaolo; Liserre, Marco

doi:10.1109/tia.2018.2809543

Cited by 35 publications

(14 citation statements)

References 16 publications

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“…This generates high-temperature gradients and inhomogeneous temperature distribution among power electronic devices and components. To minimize the thermal swings due to active power cycling, active thermal control methods can be applied [52]- [54]. Active thermal controls are based on two principles: first, minimizing the power dissipation through switching and conduction loss reduction; second, by rerouting the flowing path of the current among the power devices [55], [56]; both cases can be achieved through suitable selection of the modulation strategy and reactive power control.…”

Section: B Reliability Aspect Challengesmentioning

confidence: 99%

Reliability of Power Electronic Systems for EV/HEV Applications

et al. 2021

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The electrification of the transportation sector is moving on at a fast pace. All car manufacturers have strong programs to electrify their car fleet to fulfill the demands of society and customers by offering carbon-neutral technologies to bring goods and persons from one location to another. Power electronics technology is, in this evolution, essential and also in a rapid development technology-wise. Some of the introduced technologies are quite mature, and the systems designed must have high reliability as they can be quite complicated from an electrical perspective. Therefore, this article focuses on the reliability of the used power electronic systems applied in electric vehicles (EVs) and hybrid EVs (HEVs). It introduces the reliability requirements and challenges given for the power electronics applied in EV/HEV applications. Then, the advances in power electronic components to address the reliability challenges are introduced as they individually contribute to the overall system reliability. The reliability-oriented design methodology is also discussed, including two examples: an EV onboard charger and the drive train inverter. Finally, an outlook in terms of research opportunities in power electronics reliability related to EV/HEVs is provided. It can be concluded that many topics are already well handled in terms of reliability, but issues related to complete new technology introduction are important to keep the focus on.

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Section: B Reliability Aspect Challengesmentioning

confidence: 99%

Reliability of Power Electronic Systems for EV/HEV Applications

et al. 2021

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“…In [36], the thermal resistance of a SiC power module was halved and improved reliability figures were obtained by applying copper clip interconnects. For GaN transistors, packages exist that avoid the use of bond wires completely [37]. This is an interesting evolution as it avoids one of the typical dominant failure modes in transistor packages.…”

Section: Transistors and Diodesmentioning

confidence: 99%

Practical Considerations for Designing Reliable DC/DC Converters, Applied to a BIPV Case

et al. 2020

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State-of-the-art reliability assessment typically starts from a given circuit topology, for which the most suitable components are selected using a Physics of Failure analysis. This paper, however, addresses the topology selection stage, which is the foundation in designing reliable converters. Based on an overview of the reliability performance of different components, a methodology is presented as a guideline for comparing topologies to one another. The focus is directed at practical consequences associated with certain designs. Furthermore, an overview is provided on the latest developments in component technology reliability improvements. The developed methodology is mainly intended for demanding applications, where long lifetimes are required or elevated ambient temperatures are present. After the topology selection, an overview of possibilities is given that allows further increasing converter availability. Finally, the methodology is applied to the design of module level converters for building integrated photovoltaics, which is a high temperature application with a high desired lifetime. A prototype and experimental results are presented.

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“…In recent years, Active Thermal Control (ATC) in power electronics system has become an effective method to reduce the thermal cycling of power switch [15]. ATC is usually achieved by lowering the amplitude of fluctuation or the average temperature without modifying the design of the power converter [16]- [18].…”

Section: Introductionmentioning

confidence: 99%