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Power Electronic Systems for Efficient and Sustainable Energy Supply 2021

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "F3: Power Electronics".

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 15954

Special Issue Editors


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Centre of Technology and Systems, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
Interests: energy efficiency; smart grids; buildings flexibility and grid interaction; electrical drives; power electronics
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Power Electrical and Electronics System Research Group, University of Extremadura, 06006 Badajoz, Spain
Interests: power engineering computing; PWM rectifiers; active filters; automotive electrics; computerised monitoring; decision support systems; electric vehicles; energy conservation; graphical user interfaces; home automation; power factor; power filters; harmonic distortion; power harmonic filters; compensation; invertors; mean square error methods; passive filters; photovoltaic cells; photovoltaic power systems; power conversion harmonics; power station control; pulse width modulation; reactive power; synchronisation
Special Issues, Collections and Topics in MDPI journals

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Guest Editor

Special Issue Information

Dear Colleagues,

Over the last decade, the increasing penetration of renewable energy systems and the appearance of novel power supply paradigms, such as active distribution grids (part of the Smart Grids), have stimulated extensive research on advanced power converter topologies and control agrorithms, with the main emphasis on merits such as a wide input voltage and load regulation range, improved quality of the input and output parameters, enhanced control flexibility, and low cost. Another challeging task in the design of such converters is their long-term reliability for ensuring the continuity of operation, and the resilience of their electric power supply system. This Special Issue aims to concentrate the latest developments and to allow researchers to discuss and share experiences so as to advance this technology. Topics of interest include, but are not limited to, the following:

  • Advanced power electronic converter topologies
  • Power flow control and optimization algorithms
  • Frequency and voltage regulation
  • Energy storage systems (including the use of electrical vehicles for this function)
  • Demand generation strategies
  • Energy flexibility
  • Condition monitoring, intelligent protection, fault diagnosis, and self-healing
  • Communications systems and protocols used for the integration of distributed energy sources and storages

Prof. Dr. João Martins
Prof. Enrique Romero-Cadaval
Prof. Dr. Dmitri Vinnikov
Guest Editors

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Published Papers (4 papers)

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Research

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17 pages, 11660 KiB  
Article
Design and Experimental Validation of a Single-Stage PV String Inverter with Optimal Number of Interleaved Buck-Boost Cells
by Artem Fesenko, Oleksandr Matiushkin, Oleksandr Husev, Dmitri Vinnikov, Ryszard Strzelecki and Piotr Kołodziejek
Energies 2021, 14(9), 2448; https://doi.org/10.3390/en14092448 - 25 Apr 2021
Cited by 8 | Viewed by 2067
Abstract
Increasing converter power density is a problem of topical interest. This paper discusses an interleaved approach of the efficiency increase in the buck-boost stage of an inverter with unfolding circuit in terms of losses in semiconductors, output voltage ripples and power density. Main [...] Read more.
Increasing converter power density is a problem of topical interest. This paper discusses an interleaved approach of the efficiency increase in the buck-boost stage of an inverter with unfolding circuit in terms of losses in semiconductors, output voltage ripples and power density. Main trends in the power converter development are reviewed. A losses model was designed and used for the proposed solution to find an optimal number of interleaved cells. It describes static and dynamic losses in semiconductor switches for buck and boost mode. The presented calculation results demonstrate the efficiency of the interleaved approach for photovoltaic system. 1 kW power converter prototype was designed with two parallel dc-dc cells for experimental verification of obtained theoretical results. The experimental results confirm theoretical statements. Full article
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14 pages, 4815 KiB  
Article
Wide-Supply-Voltage-Range CMOS Bandgap Reference for In Vivo Wireless Power Telemetry
by Ruhaifi Bin Abdullah Zawawi, Wajahat H. Abbasi, Seung-Hwan Kim, Hojong Choi and Jungsuk Kim
Energies 2020, 13(11), 2986; https://doi.org/10.3390/en13112986 - 10 Jun 2020
Cited by 12 | Viewed by 5132
Abstract
The robustness of the reference circuit in a wide range of supply voltages is crucial in implanted devices. Conventional reference circuits have demonstrated a weak performance over wide supply ranges. Channel-length modulation in the transistors causes the circuit to be sensitive to power [...] Read more.
The robustness of the reference circuit in a wide range of supply voltages is crucial in implanted devices. Conventional reference circuits have demonstrated a weak performance over wide supply ranges. Channel-length modulation in the transistors causes the circuit to be sensitive to power supply variation. To solve this inherent problem, this paper proposes a new output-voltage-line-regulation controller circuit. When a variation occurs in the power supply, the controller promptly responds to the supply deviation and removes unwanted current in the output path of the reference circuit. The proposed circuit was implemented in a 0.35-μm SK Hynix CMOS standard process. The experimental results demonstrated that the proposed reference circuit could generate a reference voltage of 0.895 V under a power supply voltage of 3.3 V, line regulation of 1.85 mV/V in the supply range of 2.3 to 5 V, maximum power supply rejection ratio (PSRR) of −54 dB, and temperature coefficient of 11.9 ppm/°C in the temperature range of 25 to 100 °C. Full article
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Review

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16 pages, 1964 KiB  
Review
Single-Stage Buck–Boost Inverters: A State-of-the-Art Survey
by Mohammadreza Azizi, Oleksandr Husev and Dmitri Vinnikov
Energies 2022, 15(5), 1622; https://doi.org/10.3390/en15051622 - 22 Feb 2022
Cited by 12 | Viewed by 3098
Abstract
Single-stage buck–boost inverters have attracted the attention of many researchers, due to their ability to increase/decrease the output voltage in one power conversion stage. One of the most important uses of these inverters is in photovoltaic applications, where the voltage of the solar [...] Read more.
Single-stage buck–boost inverters have attracted the attention of many researchers, due to their ability to increase/decrease the output voltage in one power conversion stage. One of the most important uses of these inverters is in photovoltaic applications, where the voltage of the solar panels varies in a wide range. In recent years, many new inverters have been proposed to improve the performance of existing structures. In this paper, the state of the art of these single-stage buck–boost inverters is discussed. The advantages and disadvantages of each structure are examined from different perspectives, such as the number of components, losses, and performance. Finally, in a general comparison, the properties of all structures are discussed and summarized in a table. Full article
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30 pages, 7933 KiB  
Review
Review of Isolated Matrix Inverters: Topologies, Modulation Methods and Applications
by Oleksandr Korkh, Andrei Blinov, Dmitri Vinnikov and Andrii Chub
Energies 2020, 13(9), 2394; https://doi.org/10.3390/en13092394 - 11 May 2020
Cited by 26 | Viewed by 4890
Abstract
This paper presents a review of isolated matrix inverters. The study contributes to creating a point of reference for a comprehensive classification of existing solutions. Over 30 topologies were reviewed, and the main advantages and disadvantages discussed. Applications of isolated matrix inverters are [...] Read more.
This paper presents a review of isolated matrix inverters. The study contributes to creating a point of reference for a comprehensive classification of existing solutions. Over 30 topologies were reviewed, and the main advantages and disadvantages discussed. Applications of isolated matrix inverters are summarized in a tabular form to demonstrate their flexibility for different power and voltage levels achieved due to the presence of a transformer. These inverters have been proposed for the uninterruptible power supplies, high and low-voltage/power photovoltaic systems, low-power fuel cell, different low- and high-voltage battery and/or electric vehicle chargers, audio amplifiers. The fully controlled switches on both terminals of these converters typically can provide the bidirectional power transfer capability, which is also addressed for most of the topologies, but requires some modification in their modulation strategy. Average efficiency of today’s isolated matrix inverters is comparable with the two-stage power converters; however, they can provide higher reliability and lower cost. Full article
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