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Electronics
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Multilevel Power Conversion: Analysis, Control Strategies and Applications
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Multilevel Power Conversion: Analysis, Control Strategies and Applications

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

Deadline for manuscript submissions: closed (30 June 2023) | Viewed by 4330

Special Issue Editors

Dr. Ounejjar Youssef

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Guest Editor
Department of Electrical Engineering, École de Technologie Supérieure, (ETS), 1100,rue Notre-Dame Ouest, Montreal, QC H3C 1K3, Canada
Interests: power electronics; multilevel topologies; power conversion; industrial electronics
Prof. Dr. Kamal Al-Haddad

E-Mail Website
Guest Editor
Department of Electrical Engineering, École de Technologie Supérieure, (ETS), 1100,rue Notre-Dame Ouest, Montreal, QC H3C 1K3, Canada
Interests: energy conversion; power electronics; industrial electronics; electrical motion; harmonics and energy quality; energy storage systems; electrical systems modeling and simulation; renewable energy resources; energy management
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Noel Rodriguez

E-Mail Website
Guest Editor
Department of Electronics and Computer Technology, University of Granada, 18071 Granada, Spain
Interests: nanotechnology; sensors; electrical characterization; nanoelectronics; laser-induced nanomaterials; energy harvesting; energy conversion; flexible electronics; memristive devices
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Diego P. Morales

E-Mail Website
Guest Editor
Department of Electronics and Computer Technology, University of Granada, 18071 Granada, Spain
Interests: flexible electronics; laser-induced graphene; graphene-oxide; supercapacitors; memristors; sensors
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Due to the current global energy crisis and the growing need for an energy source conducive to social and industrial development, energy-efficient power converters are crucially important. Therefore, both academia and the industry have focused their attention on developing converters that are very efficient in terms of topology, control, environmental disturbances and fault tolerance. These efforts have led to the emergence of nonpolluting, multilevel converters. These devices offer the advantage of reduced costs, very attractive yields and high energy efficiency. This revolution has impacted a wide range of industries and applications, such as motor drives, renewable energy sources, FACTS and HVDC, among others. Nowadays, this issue is a very hot research topic, and it still continues to arouse great interest from academics and relevant industries; thus, we are inviting papers for this Special Issue that focus on related topics to advance and further inform the scientific knowledge base of energy-efficient converters.

Topics of interest include, but are not limited to:

  • New multilevel converter topologies;
  • Multilevel converters for adjustable speed drives;
  • Multilevel converters for grid-connected utilities, such as active filter, AC and DC microgrids, STATCOM, FACTS, HVDC, etc.;
  • Multilevel converters for renewable energy applications;
  • Multilevel rectifiers and applications in regenerative systems;
  • Modulation strategies for multilevel converters;
  • Control methods for multilevel converters;
  • Fault-tolerant capability of multilevel converters;
  • High-efficiency multilevel converters.

Dr. Ounejjar Youssef
Prof. Dr. Kamal Al-Haddad
Prof. Dr. Noel Rodriguez
Prof. Dr. Diego P. Morales
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

  • multilevel converters
  • modulation techniques
  • control methods
  • renewable energy sources
  • motor drives
  • power quality

Published Papers (3 papers)

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Research

23 pages, 2962 KiB  
Article
Control and Implementation of the Parallel Enhanced Commutation Integrated Nested Multilevel Inverter Topology
by Christoph Terbrack, Sascha Speer and Christian Endisch
Electronics 2023, 12(14), 3130; https://0-doi-org.brum.beds.ac.uk/10.3390/electronics12143130 - 19 Jul 2023
Cited by 1 | Viewed by 922
Abstract
Due to their high efficiency and advanced battery management capability, cascaded multilevel inverters are an exciting option for battery electric powertrains. A promising, new and highly efficient cascaded multilevel inverter is the Parallel Enhanced Commutation Integrated Nested Multilevel Inverter. The inverter, with four [...] Read more.
Due to their high efficiency and advanced battery management capability, cascaded multilevel inverters are an exciting option for battery electric powertrains. A promising, new and highly efficient cascaded multilevel inverter is the Parallel Enhanced Commutation Integrated Nested Multilevel Inverter. The inverter, with four semiconductor switches per submodule, can reconfigure individual battery cells in series and parallel and generate positive and negative phase voltages in regular four-quadrant operation. Therefore, emerging degrees of freedom in battery management and inverter operation must be managed and mapped into a specific Switching State for every switch. As controlling the high number of switches is safety-relevant, this publication profoundly explains the inverter’s functionality. We introduce a Switching Function that accepts easy-to-understand functional states as input, simplifying research on higher-level control algorithms and advanced single-cell battery-management capabilities. As the Switching Function guarantees safe operation and the correct contribution of every cell to the overall functionality of the inverter, it enables researchers to confidently use and thereby accelerate research on the promising new topology. The method we describe is fast, simple, deterministic and designed to convert setpoint specifications into an executable Switching Pattern. We prove that our Switching Function is operable on an FPGA with a twenty-kilohertz setpoint update operating a 17-level inverter. Full article
(This article belongs to the Special Issue Multilevel Power Conversion: Analysis, Control Strategies and Applications)
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18 pages, 16694 KiB  
Article
An SVPWM Algorithm for a Novel Multilevel Rectifier with DC-Side Capacitor Voltage Balance
by Hong Cheng, Daokuan Yang, Cong Wang and Changgeng Tian
Electronics 2023, 12(7), 1637; https://0-doi-org.brum.beds.ac.uk/10.3390/electronics12071637 - 30 Mar 2023
Cited by 1 | Viewed by 1231
Abstract
The recently proposed novel unidirectional multilevel rectifier, a three single-phase star-connected multilevel rectifier, has the characteristic of having a large number of DC-side capacitors and a complex capacitor voltage balancing control structure under conventional carrier-based phase-shift sine wave pulse-width modulation (SPWM). Hence, a [...] Read more.
The recently proposed novel unidirectional multilevel rectifier, a three single-phase star-connected multilevel rectifier, has the characteristic of having a large number of DC-side capacitors and a complex capacitor voltage balancing control structure under conventional carrier-based phase-shift sine wave pulse-width modulation (SPWM). Hence, a space vector pulse-width modulation (SVPWM) algorithm for the novel multilevel rectifier is proposed in this paper, which can quickly balance the capacitor voltage without an additional voltage balancing control structure. Firstly, it divides the space vectors of the rectifier, then it determines the two basis voltage vectors that synthesize the output reference voltage. After that, based on the analysis of the relationship between switching states and the charge–discharge of capacitors, the final action sequences of redundant vectors are determined according to the principle of keeping the capacitor charge–discharge time consistent. Thus, the capacitor voltages can be automatically balanced without an additional voltage balancing control structure. Finally, simulation and experimental results validated the feasibility and effectiveness of the proposed SVPWM algorithm. The results also show improvements in current quality, capacitor voltage balance and the fluctuation of the neutral point voltage on the DC-link, allowing for further reduction in the overall volume and cost of the rectifier. Full article
(This article belongs to the Special Issue Multilevel Power Conversion: Analysis, Control Strategies and Applications)
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12 pages, 4219 KiB  
Article
Conception and Experimental Validation of a Standalone Photovoltaic System Using the SUPC5 Multilevel Inverter
by Hind El Ouardi, Ayoub El Gadari, Youssef Ounejjar and Kamal Al-Haddad
Electronics 2022, 11(17), 2779; https://0-doi-org.brum.beds.ac.uk/10.3390/electronics11172779 - 3 Sep 2022
Cited by 3 | Viewed by 1166
Abstract
In this work, an advanced pulse width modulation (PWM) technique was developed to provide the auto-balancing of the capacitors voltages of the five-level split-packed U-Cells (SPUC5) single-phase inverter, and then, the latter was applied to a photovoltaic (PV) system in standalone mode to [...] Read more.
In this work, an advanced pulse width modulation (PWM) technique was developed to provide the auto-balancing of the capacitors voltages of the five-level split-packed U-Cells (SPUC5) single-phase inverter, and then, the latter was applied to a photovoltaic (PV) system in standalone mode to evaluate its performance in this kind of application. The SPUC5 inverter makes use of only five switches (four active bidirectional switches and one four quadrant switch), one DC source and two capacitors to generate five levels of output voltage and a current with a quasi-sinusoidal waveform which reduces the total harmonic distortion (THD) without the need to add filters or sensors, and also reduces its cost compared to the other multilevel inverters. In the proposed system; the incremental conductance (INC) algorithm is combined with a DC/DC boost converter to reach the maximum power (MP) of the PV array by tracking the MP point (MPP). The offered concept has been constructed and then simulated in the MATLAB/Simulink environment to evaluate its efficiency. According to the results, the self-balancing of the capacitors voltages has been achieved. A comparative study was performed with the traditional PWM technique. The proposed PV system has been validated by experimental results. Full article
(This article belongs to the Special Issue Multilevel Power Conversion: Analysis, Control Strategies and Applications)
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