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Advanced Power Electronic Technologies in Electric Drive Systems

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A special issue of Machines (ISSN 2075-1702). This special issue belongs to the section "Electromechanical Energy Conversion Systems".

Deadline for manuscript submissions: 31 August 2024 | Viewed by 10820

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Special Issue Editor

Dr. Kotb Basem Tawfiq

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Guest Editor

Department of Electromechanical, Systems, and Metal Engineering, Ghent University, 9000 Ghent, Belgium
Interests: matrix converter; inverter; space vector modulation; symmetrical sequence algorithm; wind energy conversion system; synchronous reluctance machine; multiphase machine; vector control; winding function; harmonic analysis; star-pentagon and optimization techniques
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Special Issue Information

Dear Colleagues,

It is my pleasure to invite you to submit your original research or review papers to this Special Issue, “Advanced Power Electronic Technologies in Electric Drive Systems”, in Machines. The power electronic converter is the main part in an electrical drive system that is used in many applications, such as electrical vehicles, hospital and military applications. The type of control method and the switching frequency of the power converter have a great impact on the obtained machine performance. The efficiency and torque density of the drive system are greatly dependent on power converter switching. With the rapid progress of power electronics, this impact could be minimized. This Special Issue will include the most recent and advanced scientific studies, with a special emphasis on the development and practical concerns for power electronic controlling techniques and their configuration; however, this is not limited to the type of machine, or the type of power converter of the control methods. The topics of interest include, but are not limited to:

Power converter topologies and associated control and modulation techniques.
Modeling and switching enhancement techniques for power converters.
The design and modeling of the drive system.
New power electronics technology.
New technologies in multiphase drives.
Switching losses in power converters.

Dr. Kotb Basem Tawfiq
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. Machines is an international peer-reviewed open access monthly 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

power converter
inverters
three-phase drives
multiphase drives
switching losses
fault tolerance control
modulation techniques

Published Papers (5 papers)

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Research

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21 pages, 5094 KiB

Open AccessArticle

Challenges and Opportunities in Electric Vehicle Charging: Harnessing Solar Photovoltaic Surpluses for Demand-Side Management

by Paula Bastida-Molina, Yago Rivera, César Berna-Escriche, David Blanco and Lucas Álvarez-Piñeiro

Machines 2024, 12(2), 144; https://doi.org/10.3390/machines12020144 - 17 Feb 2024

Viewed by 1099

Abstract

The recharging of electric vehicles will undoubtedly entail an increase in demand. Traditionally, efforts have been made to shift their recharging to off-peak hours of the consumption curve, where energy demand is lower, typically during nighttime hours. However, the introduction of photovoltaic solar energy presents a new scenario to consider when synchronizing generation and demand curves. High-generation surpluses are expected during the central day hours, due to the significant contribution of this generation; these surpluses could be utilized for electric vehicle recharging. Hence, these demand-side management analyses present important challenges for electricity systems and markets. This research explores this overdemand avenue and presents a method for determining the ideal recharge curve of the electric vehicle. Consequently, with this objective of maximizing photovoltaic generation to cover as much of the foreseeable demand for electric vehicles as possible in future scenarios of the electrification of the economy, the six fundamental electric vehicle charging profiles have been analyzed. A practical scenario for 2040 is projected for the Canary Islands, estimating the potential levels of demand-side management and associated coverage. The coverage ranges from less than 20% to over 40%, considering the absence of demand-side management measures and the maximum displacement achievable through such measures. Full article

(This article belongs to the Special Issue Advanced Power Electronic Technologies in Electric Drive Systems)

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19 pages, 13625 KiB

Open AccessArticle

Impact of Grid-Connected Inverter Parameters on the Supraharmonic Emissions in Distributed Power Generation Systems

by Abdellatif M. Aboutaleb, Jan Desmet and Jos Knockaert

Machines 2023, 11(11), 1014; https://doi.org/10.3390/machines11111014 - 07 Nov 2023

Cited by 1 | Viewed by 1114

Abstract

In this paper, a mathematical analysis is presented to show the effect of grid-connected inverter (GCI) parameters on its emissions in the supraharmonic range. This analysis is extended to explain the effect of asymmetry on the emissions of parallel-connected GCIs on distributed power generation systems. The switching harmonics of a GCI appear as bands around the switching frequency and its multiples. A MATLAB/Simulink model is built to perform two studies. In the first study, we use one GCI to examine the effect of the parameters on the emissions, while in the second study, we examine the effect of the asymmetry of two parallel-connected GCIs on the total emission toward the grid. An actual setup is built to verify the results of the mathematical analysis and the simulation study. It is found that the SHs of single-phase GCI amplitude are strongly dependent on the DC-link voltage and the coupling inductor, while the phases of the sideband harmonics only change with changing the injected power. The variation of the injected power does not have any tangible effect on the carrier harmonics. Full article

(This article belongs to the Special Issue Advanced Power Electronic Technologies in Electric Drive Systems)

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23 pages, 8166 KiB

Open AccessArticle

Estimation Technique for IGBT Module Junction Temperature in a High-Power Density Inverter

by Ahmed H. Okilly, Seungdeog Choi, Sangshin Kwak, Namhun Kim, Jonghyuk Lee, Hyoungjun Moon and Jeihoon Baek

Machines 2023, 11(11), 990; https://doi.org/10.3390/machines11110990 - 26 Oct 2023

Viewed by 1583

Abstract

During the last few decades, insulated-gate bipolar transistor (IGBT) power modules have evolved as reliable and useful electronic parts due to the increasing relevance of power inverters in power infrastructure, reliability enhancement, and long-life operation. Excessive temperature stresses caused by excessive power losses frequently cause high-power-density IGBT modules to fail. As a result, module temperature monitoring techniques are critical in designing and selecting IGBT modules for high-power-density applications to guarantee that temperature stresses in the various module components remain within the rated values. In this paper, a module’s different losses were estimated, a heating pipe system for the thermal power cycling technique was proposed, and finite element method (FEM) thermal modeling and module temperature measurement were performed using ANSYS Icepak software version 2022 R1 to determine whether the IGBT module’s temperature rise was within acceptable bounds. To test the proposed technique, a proposed design structure of the practical railway application with a 3.3 MW traction inverter is introduced using commercialized IGBT modules from Semikron company with maximum temperature of about 150 °C. the FEM analysis results showed that the maximum junction temperature is about 109 °C which is in acceptable ranges, confirming the appropriate selection of the employed IGBT module for the target application. Full article

(This article belongs to the Special Issue Advanced Power Electronic Technologies in Electric Drive Systems)

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27 pages, 23202 KiB

Open AccessEditor’s ChoiceArticle

Circulating Current Control in Interleaved and Parallel Connected Power Converters

by Khalid Javed, Ruben De Croo, Lieven Vandevelde and Frederik De Belie

Machines 2023, 11(9), 878; https://doi.org/10.3390/machines11090878 - 01 Sep 2023

Viewed by 1394

Abstract

This article analyzes circulating current control in single-phase power electronic converters, focusing on two different topologies: interleaved and parallel configurations. The study involves a bridgeless interleaving topology with two boost converters for increased efficiency. A parallel connection is also examined for monitoring line current, circulating currents, and power factor control. The article widely explains all current loops, including Common Mode Circulating Currents (CMCC) in the bridgeless interleaved topology and Differential Mode Circulating Currents (DMCC) in parallel-connected interleaved power converters. The proposed control scheme employs voltage and current control loops for output voltage and line current control and introduces CMCC and DMCC compensators to eliminate all types of circulating currents. An efficient Power Factor Correction (PFC) and output voltage control method is presented in this article. The effectiveness of the proposed schemes is validated through comparisons with modern control systems. The results are verified using Simulink/MATLAB and experimental setups with TI Instruments Piccolo prototypes and C2000 (TMS320F28035 microcontroller MCU) microcontrollers in parallel configurations. Full article

(This article belongs to the Special Issue Advanced Power Electronic Technologies in Electric Drive Systems)

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Review

Jump to: Research

28 pages, 3520 KiB

Open AccessEditor’s ChoiceReview

Bearing Current and Shaft Voltage in Electrical Machines: A Comprehensive Research Review

by Kotb B. Tawfiq, Mehmet Güleç and Peter Sergeant

Machines 2023, 11(5), 550; https://doi.org/10.3390/machines11050550 - 12 May 2023

Cited by 6 | Viewed by 4890

Abstract

The reliability assessment of electric machines plays a very critical role in today’s engineering world. The reliability assessment requires a good understanding of electric motors and their root causes. Electric machines mostly fail due to mechanical problems and bearing damage is the main source of this. The bearings can be damaged by mechanical, electrical, and thermal stresses. Among all stresses, the researcher should give special attention to the electrical one, which is bearing current and shaft voltage. This review paper introduces a comprehensive study of bearing current and shaft voltage for inverter-fed electric machines. This study aims to discuss several motor failure processes, as well as the sources and definitions of bearing current and shaft voltage. The different kinds of bearing currents are addressed and the parasitic capacitances, which are the key component to describe bearing current, are determined. Several measurement approaches of bearing current will be discussed. Furthermore, modeling of bearing current will be covered together with the machine’s parasitic capacitances. Moreover, the different bearing current mitigation techniques, as described in many papers, will be thoroughly addressed. The use of rewound multiphase machines for mitigation of bearing current will be proposed and compared to a three-phase machine. Finally, various pulse width modulation techniques of multiphase systems that reduce bearing current and shaft voltage will be investigated, and the findings described in the literature will be summarized for all techniques. Full article

(This article belongs to the Special Issue Advanced Power Electronic Technologies in Electric Drive Systems)

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