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Energies
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Reliability Assessment of DC-DC Converters for Photovoltaic Applications
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Reliability Assessment of DC-DC Converters for Photovoltaic Applications

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "A2: Solar Energy and Photovoltaic Systems".

Deadline for manuscript submissions: closed (10 August 2020) | Viewed by 2281

Special Issue Editor

Prof. Dr. Michaël Daenen

E-Mail Website
Guest Editor
Faculty of Engineering Technology, Universiteit Hasselt, 3590 Diepenbeek, Belgium
Interests: reliability; photovoltaics; power electronics; materials engineering; modelling

Special Issue Information

Dear Colleagues,

DC–DC converters are becoming increasingly important in photovoltaic (PV) applications. The advantages of this type of inverter lie in the possibility to do per-module max power point tracking (MPPT) and make PV systems more shade tolerant. This increases the energy output but also improves PV module reliability. Additionally, combinations with local storage give opportunities to DC–DC converters, lowering the inverters’ power and enabling the spread of energy injection to the grid. Possibilities of PV integration in electric vehicles also require DC–DC conversion. All these applications would benefit from better lifetimes and better lifetime predictions or comparisons. In this Special Issue we are aiming for articles that publish results on cases that validate reliability models and these models themselves at the component or system level for DC–DC conversion in photovoltaic applications.

Prof. Dr. Michaël Daenen
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • power electronics
  • reliability
  • DC–DC
  • photovoltaics
  • mission profile
  • topologies
  • modelling
  • validation
  • design for reliability
  • lifetime prediction
  • lifetime estimation
  • lifetime comparison

Published Papers (1 paper)

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Research

16 pages, 15823 KiB  
Article
The Sensitivity of an Electro-Thermal Photovoltaic DC–DC Converter Model to the Temperature Dependence of the Electrical Variables for Reliability Analyses
by Wieland Van De Sande, Simon Ravyts, Omid Alavi, Philippe Nivelle, Johan Driesen and Michaël Daenen
Energies 2020, 13(11), 2865; https://doi.org/10.3390/en13112865 - 04 Jun 2020
Cited by 7 | Viewed by 2060
Abstract
The operational expenditures of solar energy are gaining attention because of the continuous decrease of the capital expenditures. This creates a demand for more reliable systems to further decrease the costs. Increased reliability is often ensured by iterative use of design for reliability. [...] Read more.
The operational expenditures of solar energy are gaining attention because of the continuous decrease of the capital expenditures. This creates a demand for more reliable systems to further decrease the costs. Increased reliability is often ensured by iterative use of design for reliability. The number of iterations that can take place strongly depends on the computational efficiency of this methodology. The main research objective is to quantify the influence of the temperature dependence of the electrical variables used in the electro-thermal model on the reliability and the computation time. The influence on the reliability is evaluated by using a 2-D finite elements method model of the MOSFET and calculating the plastic energy dissipation density in the die-attach and the bond wire. The trade-off between computation time of the electro-thermal model in PLECS (4.3, Plexim, Zurich, Switzerland) and generated plastic energy accuracy obtained in COMSOL (5.3, COMSOL Inc., Burlington, MA, USA) is reported when excluding a certain temperature dependence. The results indicate that the temperature dependence of the input and output capacitors causes no change in the plastic energy dissipated in the MOSFET but does introduce the largest increase in computation time. However, not including the temperature dependence of the MOSFET itself generates the largest difference in plastic energy of 10% as the losses in the die are underestimated. Full article
(This article belongs to the Special Issue Reliability Assessment of DC-DC Converters for Photovoltaic Applications)
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