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Energies
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Solid Dielectrics and Their Applications
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Solid Dielectrics and Their Applications

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "F: Electrical Engineering".

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 5205

Special Issue Editors

Prof. Dr. Philippe Combette

E-Mail Website
Guest Editor
Institute of Electronics and Systems, University of Montpellier, 34000 Montpellier, France
Interests: gyroscopes, microsensors, flow sensors, gas sensors, laminar flow, piezoelectric transducers, ultrasonic transducers, Coriolis force, acoustic impedance, aerodynamics, biomedical ultrasonics, bismuth compounds, calorimetry, composite materials, electric impedance, electromechanical effects, etching, flow measurement, high-temperature techniques, jets, particle reinforced composites, photolithography, piezoelectric materials, piezoelectricity, probes
Prof. Dr. Petru Notingher

E-Mail Website
Guest Editor
Institute of Electronics and Systems, University of Montpellier, 34000 Montpellier, France
Interests: dielectric materials, electric charge measurement, electrostatic phenomena

Special Issue Information

Dear Colleagues,

The Guest Editors are inviting submissions to a Special Issue of Energies on the subject area of “Solid Dielectrics and their Applications”.

Dielectric materials have been from the very beginning at the heart of the electrical and electronics components and systems, and a main topic related to their design and reliability. Nowadays, the continuously increasing demand of improving energy efficiency requires more and more integration and miniaturization, involving significant increase of thermal, electrical and mechanical stress applied to dielectrics during service, while these materials are one of the main reasons for failures in these systems. In this context, this Special Issue will deal with the different aspects related to solid dielectrics and to their present and future applications.

Topics of interest for publication include (but are not limited to):

  • Basic and advanced properties of solid dielectrics
  • Different types of dielectric materials (polymers, ceramics, composites) and their applications
  • Tailoring of dielectric properties for specific applications
  • Dielectrics in micro and nano-electronics
  • Dielectrics in high voltage applications (dc and ac)
  • Dielectrics in power electronics
  • Dielectrics in space applications
  • Dielectrics in sensors and actuators
  • Dielectrics for energy storage systems
  • Electrets and their applications
  • Nano-dielectrics and their applications
  • Piezoelectric materials and their applications
  • Bio-dielectrics
  • High-temperature solid dielectrics and their applications
  • High field solid dielectrics and their applications
  • Behavior of dielectric properties under high stress and reliability-related problems in electronic and electrical engineering components and systems
  • Lifetime estimation of dielectric materials and structures
  • Insulating systems
  • Set-up and optimization of insulating structures and systems
  • Renewable and bio-sourced dielectrics
  • Challenges and prospects related to the use of solid dielectrics in emerging applications

Prof. Dr. Philippe Combette
Prof. Petru Notingher
Guest Editors

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

  • dielectric
  • insulator
  • electrical properties
  • permittivity
  • conductivity
  • breakdown field
  • power transmission
  • power electronics
  • electric charge
  • hvdc
  • hvac
  • electric field
  • high voltage
  • high temperature
  • reliability
  • cable
  • electrical machines
  • sensors
  • actuators
  • electronics
  • energy storage

Published Papers (2 papers)

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Research

9 pages, 3089 KiB  
Article
Interpretation of Eccentricity of an Enameled Wire by Capacitance Measurements
by Sonia Ait-Amar, Abdoulay Koita and Gabriel Vélu
Energies 2022, 15(8), 2802; https://doi.org/10.3390/en15082802 - 12 Apr 2022
Cited by 1 | Viewed by 1762
Abstract
There are systems dedicated to measuring the eccentricity of enameled wires based on optical and electromagnetic phenomena. However, these methods are limited by the nature of the insulation and the conductor. The proposed solution consists of checking the wire eccentricity by an electrical [...] Read more.
There are systems dedicated to measuring the eccentricity of enameled wires based on optical and electromagnetic phenomena. However, these methods are limited by the nature of the insulation and the conductor. The proposed solution consists of checking the wire eccentricity by an electrical measurement. Since it is a conductor on which an insulator is placed, the idea consists of forming a capacitor and measuring its capacitance in order to deduce the insulation thickness. Full article
(This article belongs to the Special Issue Solid Dielectrics and Their Applications)
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17 pages, 4256 KiB  
Article
Electric Field Distribution in HVDC Cable Joint in Non-Stationary Conditions
by Thi Thu Nga Vu, Gilbert Teyssedre and Séverine Le Roy
Energies 2021, 14(17), 5401; https://doi.org/10.3390/en14175401 - 30 Aug 2021
Cited by 12 | Viewed by 2826
Abstract
Accessories such as joints and terminations represent weak points in HVDC cable systems. The DC field distribution is intimately dependent on the thermal conditions of the accessory and on material properties. Moreover, there is no available method to probe charge distribution in these [...] Read more.
Accessories such as joints and terminations represent weak points in HVDC cable systems. The DC field distribution is intimately dependent on the thermal conditions of the accessory and on material properties. Moreover, there is no available method to probe charge distribution in these conditions. In this work, the field distribution in non-stationary conditions, both thermally and electrically, is computed considering crosslinked polyethylene (XLPE) as cable insulation and different insulating materials (silicone, rubber, XLPE) for a 200 kV joint assembled in a same geometry. In the conditions used, i.e., temperatures up to 70 °C, and with the material properties considered, the dielectric time constant appears of the same order or longer than the thermal one and is of several hours. This indicates that both physical phenomena need to be considered for modelling the electric field distribution. Both the radial and the tangential field distributions are analysed, and focus is given on the field distribution under the stress cone on the ground side and near the central deflector on the high voltage side of the joint. We show that the position of the maximum field varies in time in a way that is not easy to anticipate. Under the cone, the smallest tangential field is obtained with the joint insulating material having the highest electrical conductivity. This results from a shift of the field towards the cable insulation in which the geometrical features produce a weaker axial component of the field. At the level of the central deflector, it is clear that the tangential field is higher when the mismatch between the conductivity of the two insulations is larger. In addition, the field grows as a function of time under stress. This work shows the need of precise data on materials conductivity and the need of probing field distribution in 3D. Full article
(This article belongs to the Special Issue Solid Dielectrics and Their Applications)
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