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Energies
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Design, Optimization and Applications of Power Converters
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Design, Optimization and Applications of Power Converters

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

Deadline for manuscript submissions: closed (10 August 2022) | Viewed by 5305

Special Issue Editors

Prof. Dr. Arkadiusz Lewicki

E-Mail Website
Guest Editor
Faculty of Electrical and Control Engineering, Gdansk University of Technology, Narutowicza 11/12, 80-233 Gdansk, Poland
Interests: modulation techniques; multilevel inverters; multiphase inverters; current source inverters; voltage source inverters
Prof. Marcin Morawiec

E-Mail Website
Guest Editor
Department of Controlled Electric Drives, Faculty of Electrical and Control Engineering, Gdansk University of Technology, 80-233 Gdańsk, Poland
Interests: nonlinear control systems; backsteping techniques; cascade inverters; DAB

Special Issue Information

Dear Colleagues,

The power converters have become a mature and attractive solution for many applications. They can be found in many applications such as motor drives, active filters, charging stations, high frequency heaters, renewable energy sources, FACTS, and HVDC, among others. The most popular are the voltage source inverters, which are commonly used for low-power conversion and (especially multi-level inverters) in medium voltage and high power applications. The current source inverters also find their renaissance. In many technical papers their Authors present new inverter topologies with new properties and also proposes their control methods. The continuous efforts of scientists around the world make it possible to propose for industry the various  converter topologies, modulation techniques and control strategies to improve features like the efficiency, robustness, fault-tolerant capability, economic cost and size. The research on this topic is ongoing, and is nowadays a hot research topic.

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

  • New converter topologies and applications;
  • Multilevel /multiphase converters;
  • DC-link voltage balancing methods;
  • Modulation techniques;
  • Transistor nonlinearity compensation;
  • Control strategies;
  • Fault-tolerant capability;
  • High-efficiency converters;
  • High power converters;
  • High frequency converters;

Prof. Arkadiusz Lewicki
Prof. Marcin Morawiec
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

  • Multiphase converters
  • multilevel converters
  • modulation techniques
  • DC-link voltage balancing methods
  • control methods
  • high-power systems
  • renewable energy sources
  • motor drives

Published Papers (3 papers)

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Research

20 pages, 8605 KiB  
Article
Research on ZVS Phase-Shifted Full-Bridge Broadband Inverter Based on Auxiliary Current Source
by Yuezhang Zhao, Quan Xiao, Zihao Zhang, Xueting Zhao and Deyan Lin
Energies 2022, 15(22), 8661; https://doi.org/10.3390/en15228661 - 18 Nov 2022
Cited by 3 | Viewed by 1424
Abstract
Phase-shifted full-bridge topologies are widely used in medium- and high-power DC/DC converters due to their small size and high switching frequency. However, there are few studies on the application of broadband inverters. In the traditional phase-shift full-bridge inverter with a fully resonant load, [...] Read more.
Phase-shifted full-bridge topologies are widely used in medium- and high-power DC/DC converters due to their small size and high switching frequency. However, there are few studies on the application of broadband inverters. In the traditional phase-shift full-bridge inverter with a fully resonant load, the problem of current commutation which leads to hard switching is often encountered, to overcome such an issue, an auxiliary current source network is introduced to realize the zero-voltage turn-on of the lagging bridge arm. The working modes of the converter are analyzed in detail, and the parameters of the auxiliary current source network are designed. The simulation verification is carried out by MATLAB/Simulink in a wide frequency range from 10 kHz to 500 kHz. Finally, an experimental circuit board is designed, and the experimental results show that the topology can achieve soft switching in a frequency range from 10 kHz to 200 kHz and has a certain applicability. Full article
(This article belongs to the Special Issue Design, Optimization and Applications of Power Converters)
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14 pages, 3969 KiB  
Article
High-Voltage Power Supply for High Repetitive Rate Marx Generator with Quasi-Resonant Zero-Current Switching Transistor Control Algorithm
by Krzysztof Pachowicz
Energies 2022, 15(19), 6902; https://doi.org/10.3390/en15196902 - 21 Sep 2022
Viewed by 1816
Abstract
Due to having a number of advantages, Marx generators are still the most widely used devices for generating high-voltage pulses in many fields of science and technology. To ensure their proper operation, especially when the generation of many frequent, highly repetitive pulses is [...] Read more.
Due to having a number of advantages, Marx generators are still the most widely used devices for generating high-voltage pulses in many fields of science and technology. To ensure their proper operation, especially when the generation of many frequent, highly repetitive pulses is required, a highly efficient high-voltage power supply is needed. The paper describes a specially developed power supply (input voltage 48 V DC, output voltage up to 50 kV) based on the conventional Full Bridge topology with two high-frequency high-voltage transformers and a 6-stage voltage multiplier. In order to avoid many problems caused by low coupling between primary and secondary windings of the transformers and the large parasitic capacitances of the secondary windings, a special quasi-resonant zero-current switching transistor control algorithm with variable switching frequency (dependent on output load) was developed. In the described method, the energy is supplied to the transformer in short pulses, when a pair of diagonal transistors of the full-bridge converter were turned on. Then, the freewheeling state is maintained until all of the energy stored in the leakage inductance of the transformer has been transferred to the secondary side, which means that the current in the primary windings drops to zero. This approach reduces energy losses, electromagnetic disturbances and prevents current distortion in primary winding. Full article
(This article belongs to the Special Issue Design, Optimization and Applications of Power Converters)
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24 pages, 20647 KiB  
Article
NPC Seven-Level Single-Phase Inverter with DC-Link Voltage Balancing, Input Voltage Boosting, and AC Power Decoupling
by Robert Stala, Jakub Hachlowski and Adam Penczek
Energies 2022, 15(10), 3729; https://doi.org/10.3390/en15103729 - 19 May 2022
Cited by 1 | Viewed by 1458
Abstract
This paper presents a novel concept of the DC-AC system with the input voltage boost ability, seven-level output voltage modulation, and the input AC current reduction at the double frequency of the output voltage. The system integrates the NPC full-bridge inverter which is [...] Read more.
This paper presents a novel concept of the DC-AC system with the input voltage boost ability, seven-level output voltage modulation, and the input AC current reduction at the double frequency of the output voltage. The system integrates the NPC full-bridge inverter which is composed of four-level legs and an active input voltage balancer (AIVB). The DC-link is composed of three capacitors connected in a series. The source of the energy is connected directly to the middle capacitor while the upper and lower capacitors of the DC-link are charged by the AIVB. The operation of the AIVB leads to balancing of the DC-link voltage and a three-fold boosting of the input voltage. The AIVB utilizes a novel switched-capacitor (SC) topology and can be designed as a low-volume quasi-magneticless converter with a simple open-loop control. One of the proposed methods of the control of the AIVB allows for a double frequency reduction in the input current. The application of the AIVB allows for the use of a seven-level NPC full-bridge (FB) inverter with a simple classic carrier-based PWM which is not applicable in the typical DC-link configurations. This paper presents the converter’s concept, its operation, control methods, and the results of simulations and experiments. Full article
(This article belongs to the Special Issue Design, Optimization and Applications of Power Converters)
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