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Energies
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Advances in Power Quality and Electrical Machines
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Advances in Power Quality and Electrical Machines

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

Deadline for manuscript submissions: 24 January 2025 | Viewed by 2141

Special Issue Editor

Dr. Marcin Pepliński

E-Mail Website
Guest Editor
Department of Ship Electrical Power Engineering, Gdynia Maritime University, 81-225 Gdynia, Poland
Interests: power losses, heating and vibration of induction motors in the conditions of power quality disturbances

Special Issue Information

Dear Colleagues,

We are pleased to announce this Special Issue on the topic of “Advances in Power Quality and Electrical Machines”.

Respective elements of a power system, including generators and energy receivers, are exposed to power quality disturbances such as voltage deviation, unbalance and waveform distortion. Their occurrence results in various harmful phenomena. In electrical machines, power quality disturbances cause among the other things an increase in power losses, efficiency reduction, overheating, excessive vibration and torsional vibration. To compound this problem, the work of electrical machines may also generate power quality disturbances.

For this Special Issue, we encourage the submission of original contributions and review papers regarding power-quality-related phenomena in asynchronous and synchronous machines. Potential topics may include, but are not limited to, power losses, heating, vibration and torsional vibration of electrical machines, the effect of the work of electrical machines on power quality, and the protection of electrical machines against malfunctions due to excessive power quality disturbances. Proposals of power quality standards modification are also welcome.

Dr. Marcin Pepliński
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. 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

  • asynchronous machines
  • heating
  • power losses
  • power quality
  • synchronous machines
  • vibration
  • voltage waveform distortions
  • voltage unbalance
  • voltage deviation

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Published Papers (2 papers)

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Research

26 pages, 2066 KiB  
Article
Back-to-Back Inverter for Induction Machine Drive with Harmonic Current Compensation and Reactive Power Tolerance to Voltage Sags
by Maria R. L. Oliveira, Luccas T. F. Soares and Aurélio L. M. Coelho
Energies 2024, 17(16), 4110; https://doi.org/10.3390/en17164110 - 19 Aug 2024
Viewed by 589
Abstract
The widespread use of static converters for controlling electrical machines and the concern for electrical power quality in industrial environments provide an opportunity for utilizing these devices to enhance the power quality. In this context, this work presents a back-to-back converter model for [...] Read more.
The widespread use of static converters for controlling electrical machines and the concern for electrical power quality in industrial environments provide an opportunity for utilizing these devices to enhance the power quality. In this context, this work presents a back-to-back converter model for driving induction machines. The converter is designed to correct the power factor of the point common coupling (PCC), compensate for harmonic currents (acting as an active filter), and withstand voltage sags. The necessary control system models were developed, and an alternative implementation for these functions in the converter was proposed. The results demonstrate the technical feasibility of this solution, as the converter operated within its nominal limits by compensating for harmonics and reactive power. Moreover, the equipment showed resilience to severe voltage sags. The contribution of this paper focuses on the multifunctionality of the frequency converter for driving induction machines. It emphasizes the advantage of the inverter in improving power quality in industrial environments through reactive power compensation and harmonic current compensation, thus functioning as an active power filter. Additionally, it is worth highlighting its ability to handle voltage dips. In this regard, this paper contributes by providing an operational strategy for driving the induction machine during such transients. Full article
(This article belongs to the Special Issue Advances in Power Quality and Electrical Machines)
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18 pages, 13313 KiB  
Article
The Concentrator for Single-Phase Inverters with Three-Phase Output Using Magnetically Coupled Reactors
by Adam Muc, Andrzej Kasprowicz and Piotr Mysiak
Energies 2023, 16(21), 7343; https://doi.org/10.3390/en16217343 - 30 Oct 2023
Cited by 3 | Viewed by 1023
Abstract
This paper presents a passive concentrator for single-phase inverters with a three-phase output, which uses magnetically coupled reactors. Due to the development of renewable energy systems, the proposed systems may enable the easier integration of converters in the form of inverters with the [...] Read more.
This paper presents a passive concentrator for single-phase inverters with a three-phase output, which uses magnetically coupled reactors. Due to the development of renewable energy systems, the proposed systems may enable the easier integration of converters in the form of inverters with the power system. Two variants of cooperation of the concentrator with single-phase voltage inverters were considered. The first variant proposed a system topology in which three single-phase full-bridge inverters were connected to the concentrator, while the other variant proposed six half-bridge inverters. A control system of the inverters that does not use PWM was developed. A common star point was created for the supply voltages in the form of a capacitive divider covering all the inverters. An analysis of the concentrator system was presented, taking into account the cooperation with inverters. The overall power of the TDSλ system was defined and the relationship for its determination was given. Simulation studies were described, presenting the obtained voltage and current waveforms. The impact of changing the supply voltage of the inverters on the operation of the concentrator and the shape of the output voltages was assessed. The proposed systems allow you to connect 3 or 6 single-phase inverters. The use of magnetically coupled reactors enables the use of a magnetic system of lower power and size. The described concentrators enable the generation of multi-level three-phase output voltage with a low THD content. Full article
(This article belongs to the Special Issue Advances in Power Quality and Electrical Machines)
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