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Innovative Technologies in Power Converters, Volume II
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Innovative Technologies in Power Converters, Volume II

A special issue of Electronics (ISSN 2079-9292). This special issue belongs to the section "Power Electronics".

Deadline for manuscript submissions: 30 November 2024 | Viewed by 8782

Special Issue Editors

Dr. Aitor Vázquez Ardura

E-Mail Website
Guest Editor
Power Supply Group, Electrical Engineering Department, University of Oviedo, 33204 Gijón, Spain
Interests: power electronics; DC–DC power converters; AC–DC power converters; bidirectional power converters; WBG in power converters; energy storage systems
Special Issues, Collections and Topics in MDPI journals
Dr. Diego Gonzalez Lamar

E-Mail Website
Guest Editor
Power Supply Group, Electrical Engineering Department, University of Oviedo, 33204 Gijón, Spain
Interests: power electronics; DC–DC converters; power factor correction; LED drivers (VLC); WBG in power converters
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Power electronics is rapidly growing into one of the most important research fields in today’s society. The emergence of multiple applications has led to a drastic increase in interest from both industry and academia in researching new topologies, controls, semiconductor devices, and passive components. Among other applications, the following can be cited as examples of tracking lines of this evolution: electric mobility, biomedical applications, energy harvesting, smart grids and microgrids, renewable energies, energy storage systems or IoT, and power management.

The relationship between these applications and research interest can be seen as a cycling loop: New applications lead to new studies on power electronics, and innovative studies on power electronics lead to new applications. In this sense, the emerging technologies in power electronics can be classified into four different categories: innovative control techniques, new topologies for power converters, the use of wide-bandgap semiconductor devices (SiC and GaN), and progress in passive components (capacitors and magnetic elements).

The main aim of this Special Issue is to seek high-quality submissions that highlight these innovative technologies in power converters and address recent breakthroughs in application-oriented design for power electronics.

The topics of interest include, but are not limited to:

  • Emerging trends in digital control for power electronics:
    • Adaptive and predictive controllers;
    • Preventing aging and failure of controllers;
    • Neural-network-based and artificial intelligence controllers;
    • Internet of Things applied to power management.
  • New emerging topologies:
    • Modular arrangements (IPOS, ISOP, IPOP, multilevel power converters, composite power converters);
    • Partial power processing converters;
    • Multiple input–multiple output (MIMO) power converters;
    • Resonance-based power converters and PWM-resonant converters.
  • Use of wide-bandgap semiconductor devices:
    • High-switching-frequency applications of GaN and SiC;
    • High-power-density switching converters using GaN or SiC;
    • Unique applications of SiC or GaN devices.
  • Passive elements:
    • New ferromagnetic materials for magnetic elements;
    • Emerging dielectric materials and metamaterials for capacitors;
    • Superconductivity and cryogen applications.

Dr. Aitor Vázquez Ardura
Dr. Diego Gonzalez Lamar
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. Electronics 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 2400 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

  • adaptive and predictive controllers
  • preventing aging and failure of controllers
  • neural-network-based and artificial intelligence controllers
  • Internet of Things applied to power management
  • modular arrangements (IPOS, ISOP, IPOP, multilevel power converters, composite power converters)
  • partial power processing converters
  • multiple input–multiple output (MIMO) power converters
  • resonance-based power converters and PWM-resonant converters
  • high-switching-frequency applications of GaN and SiC
  • high-power-density switching converters using GaN or SiC
  • unique applications of SiC or GaN devices
  • new ferromagnetic materials for magnetic elements
  • emerging dielectric materials and metamaterials for capacitors
  • superconductivity and cryogen applications

Published Papers (5 papers)

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Research

25 pages, 9555 KiB  
Article
A Novel Integrated Electronic Lighting Driver Circuit for Supplying an LED Projection Lamp with High Power Factor and Soft Switching Characteristics
by Chun-An Cheng, Ching-Min Lee, En-Chih Chang, Sheng-Hong Hou, Long-Fu Lan and Cheng-Kuan Lin
Electronics 2023, 12(22), 4642; https://doi.org/10.3390/electronics12224642 - 14 Nov 2023
Cited by 1 | Viewed by 742
Abstract
The traditional light source of projection lamps adopts a halogen lamp, which has the advantages of high brightness, but its luminous efficiency is not good and consumes energy. A light-emitting diode (LED) has the characteristics of high luminous efficiency and energy savings and [...] Read more.
The traditional light source of projection lamps adopts a halogen lamp, which has the advantages of high brightness, but its luminous efficiency is not good and consumes energy. A light-emitting diode (LED) has the characteristics of high luminous efficiency and energy savings and can be used as a new light source for projection lamps. The conventional two-stage electronic lighting driver circuit for supplying an LED projection lamp is composed of an AC-DC converter with power factor correction (PFC) as the first stage and a DC-DC converter for providing rated lamp voltage and current as the second stage. The conventional LED projection lamp driver circuit has more circuit components, a higher cost and limited efficiency. Therefore, this paper proposes a novel electronic lighting driver circuit for supplying an LED projection lamp with PFC function, which integrates a modified stacked dual boost converter and a half-bridge LLC resonant converter into a single-stage power-conversion circuit. The inductor inside the modified stacked boost converter is designed to operate at discontinuous conduction mode (DCM) for the driver circuit achieving PFC. Wide bandgap semiconductor devices silicon carbide (SiC)-based Schottky diodes are utilized to reduce power diode losses, and soft switching is implemented in the proposed LED projector lamp driver circuit to reduce the switching losses of the power switches and thus improve circuit efficiency. This paper has completed a single-stage prototype driver circuit for an LED projection lamp with PFC function, and the prototype circuit has a high power factor (PF > 0.98), low input current total-harmonic-distortion (THD < 6%) and high efficiency (>89%) in the case of an AC input power supply with an RMS value of 110 volts, and both power switches have the characteristics of soft switching. Full article
(This article belongs to the Special Issue Innovative Technologies in Power Converters, Volume II)
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33 pages, 15742 KiB  
Article
Bidirectional Interleaved DC–DC Converter for Supercapacitor Energy Storage Integration with Reduced Capacitance
by Kaspars Kroičs and Ģirts Staņa
Electronics 2023, 12(1), 126; https://doi.org/10.3390/electronics12010126 - 28 Dec 2022
Cited by 4 | Viewed by 2623
Abstract
This paper analyzes the control method of a multiphase interleaved DC–DC converter for supercapacitor energy storage system integration in a DC bus with reduced input and output filter size. A reduction in filter size is achieved by operating only in modes with duty [...] Read more.
This paper analyzes the control method of a multiphase interleaved DC–DC converter for supercapacitor energy storage system integration in a DC bus with reduced input and output filter size. A reduction in filter size is achieved by operating only in modes with duty cycles that correspond to smaller output current ripples. This leads to limited control of the charging and discharging process of the supercapacitor energy storage system. Therefore, a detailed analysis of the optimal charging strategy is provided in this paper for interleaved converters with different numbers of phases. The results show that such control can be used, albeit with some percentage loss in efficiency. Experimental results are presented in this paper to verify the theoretical results. Full article
(This article belongs to the Special Issue Innovative Technologies in Power Converters, Volume II)
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17 pages, 8808 KiB  
Article
High-Power-Factor LC Series Resonant Converter Operating Off-Resonance with Inductors Elaborated with a Composed Material of Resin/Iron Powder
by Josué Lara-Reyes, Mario Ponce-Silva, Claudia Cortés-García, Ricardo Eliu Lozoya-Ponce, Susana Magaly Parrilla-Rubio and Alán Rafael García-García
Electronics 2022, 11(22), 3761; https://doi.org/10.3390/electronics11223761 - 16 Nov 2022
Cited by 2 | Viewed by 1583
Abstract
The most common problems with magnetic cores in high-stress applications are changes in their permeability and low saturation flux density, forcing designers to use special nanocrystalline cores, which raises the overall cost of the circuit. This paper evaluates the performance of a low-cost [...] Read more.
The most common problems with magnetic cores in high-stress applications are changes in their permeability and low saturation flux density, forcing designers to use special nanocrystalline cores, which raises the overall cost of the circuit. This paper evaluates the performance of a low-cost magnetic material composed of unsaturated polyester la mination resin COR61-AA-531EX and 200 mesh iron powder with a grain size of 74 µm, which has magnetic properties of the so-called “soft magnetic composites”, which have good magnetic characteristics in high-frequency and high-stress applications. This composite material was used for the elaboration of magnetic cores for the inductors of a resonant converter, which aims to achieve a high power factor, where in this type of application, there are large current and voltage excursions in the magnetic components that vary between high and low frequencies, being a suitable application for testing the inductors with a magnetic core of resin/iron powder. The converter was designed to operate off-resonance at different switching frequencies from 300 kHz to 800 kHz to feed a resistive load with a power output of 19 watts. The operation of the circuit was experimentally validated using a resistive load at the output, validating the theoretical analysis and achieving a power factor above 98%. Full article
(This article belongs to the Special Issue Innovative Technologies in Power Converters, Volume II)
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27 pages, 10124 KiB  
Article
Performance Evaluation of Solar PV-Based Z-Source Cascaded Multilevel Inverter with Optimized Switching Scheme
by Ahmad Faiz Minai, Akhlaque Ahmad Khan, Rupendra Kumar Pachauri, Hasmat Malik, Fausto Pedro García Márquez and Alfredo Arcos Jiménez
Electronics 2022, 11(22), 3706; https://doi.org/10.3390/electronics11223706 - 12 Nov 2022
Cited by 9 | Viewed by 2019
Abstract
AC loads may demand a fixed or variable voltage at their input terminals. When using inverters to power such loads, the response of the inverter must be precisely controlled to suit the demands of the AC loads. Inverters with higher efficiency and sensitivity [...] Read more.
AC loads may demand a fixed or variable voltage at their input terminals. When using inverters to power such loads, the response of the inverter must be precisely controlled to suit the demands of the AC loads. Inverters with higher efficiency and sensitivity will play an increasingly essential role as the need for solar PV applications in prospective green technology grows. To increase power quality and provide a reliable power source, an inverter architecture with harmonic reduction approaches is proposed. The multilevel inverter (MLI), unlike conventional inverters, is developed by cascaded single inverter units and is often used to connect renewable energy sources. As a result, they can be utilized to efficiently reduce harmonics. Among the three topologies, the most widely used in industries is the neutral-point clamped MLI. When the levels are raised, however, they demand a larger number of diodes. When the level of the flying capacitor exceeds three, several capacitors are necessary. As a result, the optimum option for synthesizing the right output voltage from several DC sources is a cascaded multilevel inverter (CMLI). Each link in a CMLI is connected by a single DC source; therefore, there is no voltage imbalance. However, getting equal DC voltages at the input of each unit is once again a limitation. In this work, various existing multilevel inverter topologies including hybrid topologies with different switching strategies are investigated and reported. The performance of a solar PV-based seven-level quasi-Z-source cascaded H-Bridge MLI (qZS-CHBMLI) has been thoroughly examined with the best switching scheme and best topology of multilevel inverters using MATLAB/Simulink. Full article
(This article belongs to the Special Issue Innovative Technologies in Power Converters, Volume II)
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14 pages, 7393 KiB  
Article
Density-Dependent Effects on Pulse Compression in GaN Photodetectors Probed by Monte Carlo Studies
by William J. Milestone, Sergey A. Nikishin and R. P. Joshi
Electronics 2022, 11(19), 2997; https://doi.org/10.3390/electronics11192997 - 21 Sep 2022
Cited by 1 | Viewed by 1233
Abstract
With increases in the demand for faster electronic switching, requirements for higher operating voltages and currents, and the need to perform under harsh environments while operating at even higher frequencies, the research focus in photoconductive semiconductor switch (PCSS) technology has shifted to wide [...] Read more.
With increases in the demand for faster electronic switching, requirements for higher operating voltages and currents, and the need to perform under harsh environments while operating at even higher frequencies, the research focus in photoconductive semiconductor switch (PCSS) technology has shifted to wide bandgap semiconductors. Here, we examine the possibility of pulse compression in carbon-doped PCSS devices based on the negative differential mobility concept for faster operation. Monte Carlo simulations are used to build in and model various effects on electron transport including degeneracy, charge polarization, and scattering within a three-valley model fitted to bandstructure calculations. The focus is on exploring the density dependence of pulse compression. Thresholds for the biasing fields naturally emerge. Predictive analysis of the output full-width half-maximum (FWHM) current waveforms, as well as the dynamics of the internal charge cloud behavior, and occupancy of the various valleys within GaN are all obtained. Our results show that an increase in carrier density can increase pulse compression and create pulse-widths that are smaller than the FWHM of the input optical excitation. This bodes well for enhanced repetition rates. Variations produced by moving the laser spot along the GaN PCSS length are also examined. Though data for GaN are not yet available, the trends compare well qualitatively with previous reports for GaAs. Full article
(This article belongs to the Special Issue Innovative Technologies in Power Converters, Volume II)
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