Reliability of Capacitors for DC-Link Applications in Power Electronic Converters—An Overview
Huai Wang,Frede Blaabjerg +1 more
TLDR
This review serves to provide a clear picture of the state-of-the-art research in this area and to identify the corresponding challenges and future research directions for capacitors and their dc-link applications.Abstract:
DC-link capacitors are an important part in the majority of power electronic converters which contribute to cost, size and failure rate on a considerable scale. From capacitor users' viewpoint, this paper presents a review on the improvement of reliability of dc link in power electronic converters from two aspects: 1) reliability-oriented dc-link design solutions; 2) conditioning monitoring of dc-link capacitors during operation. Failure mechanisms, failure modes and lifetime models of capacitors suitable for the applications are also discussed as a basis to understand the physics-of-failure. This review serves to provide a clear picture of the state-of-the-art research in this area and to identify the corresponding challenges and future research directions for capacitors and their dc-link applications.read more
Citations
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A 2-kW Single-Phase Seven-Level Flying Capacitor Multilevel Inverter With an Active Energy Buffer
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TL;DR: In this article, the authors present a 2-kW, 60-Hz, 450-V -to-240-V power inverter, designed and tested subject to the specifications of the Google/IEEE Little Box Challenge, which achieves a high power density of 216 W/in $3$ and a peak overall efficiency of 97.6%, while meeting the constraints including input current ripple, load transient, thermal, and FCC Class B EMC specifications.
References
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Journal ArticleDOI
An Industry-Based Survey of Reliability in Power Electronic Converters
TL;DR: In this article, a questionnaire survey was carried out to determine the industrial requirements and expectations of reliability in power electronic converters, and the survey was subjective and conducted with a number of high-profile semiconductor manufacturers, integrators, and users in the aerospace, automation, motor drive, utility power, and other industry sectors.
Journal ArticleDOI
Toward Reliable Power Electronics: Challenges, Design Tools, and Opportunities
TL;DR: The performance of power electronic systems, especially in terms of efficiency and power density, has continuously improved by the intensive research and advancements in circuit topologies, control schemes, semiconductors, passive components, digital signal processors, and system integration technologies.
Journal ArticleDOI
Minimum Energy and Capacitance Requirements for Single-Phase Inverters and Rectifiers Using a Ripple Port
TL;DR: In this article, a ripple power port is proposed to manage energy storage and decouple capacitor ripple from power ripple, allowing the designer to make a choice of capacitor voltage independent of other system voltages.
Journal ArticleDOI
A High Power Density Single-Phase PWM Rectifier With Active Ripple Energy Storage
TL;DR: In this paper, the minimum ripple energy storage requirement is derived independently of a specific topology, and the feasibility of the active capacitor's reduction schemes is verified based on the minimum energy requirement, which can effectively reduce the energy storage capacitance.
Proceedings ArticleDOI
PWM Converter Power Density Barriers
Johann W. Kolar,U. Drofenik,Juergen Biela,Marcelo L. Heldwein,Hans Ertl,Thomas Friedli,S.D. Round +6 more
TL;DR: In this article, the authors investigated the volume of the cooling system and of the main passive components for the basic forms of power electronics energy conversion in dependency of the switching frequency and determined switching frequencies minimizing the total volume.