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Multilevel Inverters for Utility Applications
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Multilevel Inverters for Utility Applications

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

Deadline for manuscript submissions: closed (25 August 2023) | Viewed by 6779

Special Issue Editor

Dr. Dhanamjayulu Chittathuru

E-Mail Website
Guest Editor
School of Electrical Engineering, Vellore Institute of Technology, Vellore 632014, India
Interests: multi-level inverter; high gain converter; multi-onput multi-output converter; bidirectional DC-DC converter for electric vehicle application; IoT based electric drives
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

A Special Issue on “Multilevel Inverters for Utility Applications” has been proposed since multi-level inverters play a vital role in the advancements of power converters. Generally, utility-interactive inverters converting DC power sources, such as photovoltaic or fuel cells, to AC grid systems gain considerable popularity as the energy crisis and environmental concern becomes the driving force for alternative energy. Furthermore, flexible AC transmission systems (FACTSs), custom power, and power quality have been hot topics because of the increasing power demand, the widespread use of non-linear electronic equipment, and the higher power quality requirements of sensitive loads. To maximize power transmission capability and to provide high power quality at the point of common coupling (PCC) of a distribution system, power conditioning, including voltage regulation and reactive power (var)/harmonic compensation, is an indispensably necessary technology.

The aim of this Special Issue is to gather scientific contributions regarding multilevel inverters, in terms of new power converters, stability analysis, the design and control of multilevel inverters in the context of utility-based systems interfaced with energy systems and grid support functions, as well as other similar topics.

Dr. Dhanamjayulu Chittathuru
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

  • multilevel inverters
  • control schemes
  • grid support functions
  • photovoltaic energy sources

Published Papers (3 papers)

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Research

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21 pages, 8564 KiB  
Article
Implementation of EFC Charging Station by Multiport Converter with Integration of RES
by Jayaprakash Suvvala and Kannaiah Sathish Kumar
Energies 2023, 16(3), 1521; https://doi.org/10.3390/en16031521 - 03 Feb 2023
Cited by 3 | Viewed by 1515
Abstract
Electric vehicles (EVs) are gradually becoming an integral part of the drive to accomplish sustainable energy standards. Due to their limited onboard battery capacity, EVs’ expanding popularity creates a need for widespread charging stations. However, fast charging stations, particularly Extreme Fast Charging (EFC), [...] Read more.
Electric vehicles (EVs) are gradually becoming an integral part of the drive to accomplish sustainable energy standards. Due to their limited onboard battery capacity, EVs’ expanding popularity creates a need for widespread charging stations. However, fast charging stations, particularly Extreme Fast Charging (EFC), may impose a hassle on the electrical system due to overload during peak hours, frequent power gaps, and voltage sag. To flatten the power supply, the photovoltaic (PV) Hybrid Energy Storage Systems (HESS) and the uncertain and variable nature of PV systems always include solar and hybrid energy storage systems (HESS) such as batteries and supercapacitors. This research suggests a multi-port DC-DC converter (MPC) with a bidirectional DC-DC converter for battery ESS-integrated PV systems. The MPC can regulate the majority of active power through PV to a battery, PV to an EV charging station, HESS to an EV charging station, and PV to AC grid. Additionally, a PI controller is used for the MPC, taking both the PV and battery voltage variations into account. Therefore, the presented configuration can achieve the key benefits of greater integration, more efficiency, and reduced cost. Simulation results show the advantages of this multiport EV charging circuit with PV-HESS and design in different modes. Full article
(This article belongs to the Special Issue Multilevel Inverters for Utility Applications)
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11 pages, 24832 KiB  
Article
SIMO DC-DC Converter for E-Vehicle and Regenerative Braking Based on Simulation and Model Investigation
by Saahithi Suresh, C N Raghu, Ritesh Dash, Jyotheeswara Reddy Kalvakurthi, Sivaprasad Athikkal and Vivekanandan Subburaj
Energies 2022, 15(18), 6818; https://doi.org/10.3390/en15186818 - 18 Sep 2022
Viewed by 1555
Abstract
A single independent voltage source (Vin or Vbat) is used to regulate the speed of an E-vehicle (EV) with the same interval of switching pulses to generate different voltage ratios by charging/discharging the flying capacitors using [...] Read more.
A single independent voltage source (Vin or Vbat) is used to regulate the speed of an E-vehicle (EV) with the same interval of switching pulses to generate different voltage ratios by charging/discharging the flying capacitors using a novel single-input multi-output (SIMO) DC-DC switched capacitor converter. In this work, various speed transmissions are generated for controlling the speed of EVs. The selected and regulated battery voltage are generated using the SIMO DC-DC converter. The proposed converter is used to generate seven different transmission in total, of which four transmissions are used for motoring (forwarding operation) and the other three transmissions act as regenerative braking. For motoring operation, the battery, fuel cell, and photovoltaic cell are used as a sources of energy, and for the regenerative braking, the regenerated voltage is fed back to store the battery. The SIMO DC-DC converter is used to support electronic accessories, such as LED lights, the EV audio system and other accessories, including mobile and laptop battery charging. The energy recovered during regenerative braking is used to charge the battery via a proposed SIMO DC-DC converter for different speed transmissions. In addition, simulation, modeling, and analysis are used to validate the proposed system. It is intended for a fixed voltage of 12 V and output voltages ranging from 12 to 48 V. The PSIM simulation tool is used to validate the system. The validation demonstrates that the suggested converter shows good evidence for both braking and regenerative braking operations. Full article
(This article belongs to the Special Issue Multilevel Inverters for Utility Applications)
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Review

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25 pages, 5613 KiB  
Review
Non-Isolated Multiport Converter for Renewable Energy Sources: A Comprehensive Review
by Jayakumar Narayanaswamy and Srihari Mandava
Energies 2023, 16(4), 1834; https://doi.org/10.3390/en16041834 - 12 Feb 2023
Cited by 8 | Viewed by 2727
Abstract
A key focus of the Sustainable Development Goals (SDGs) is to harvest electricity from renewables. The fields of renewable energy sources (RES) and harvesting methods have seen tremendous growth. Multiport power electronic converter circuits integrate multiple energy sources. This integration aids in powering [...] Read more.
A key focus of the Sustainable Development Goals (SDGs) is to harvest electricity from renewables. The fields of renewable energy sources (RES) and harvesting methods have seen tremendous growth. Multiport power electronic converter circuits integrate multiple energy sources. This integration aids in powering the load with different required voltage ratings. A simple and reliable control scheme for this system can maintain high power transfer efficiency and reliability. To integrate RES, non-isolated (NI) DC-DC multiport converters (MPC) are introduced; however, the main objective is to concentrate on NI MPC which provide a reliable output. In this paper non-isolated MPC topologies are reviewed and analyzed based on difference parameters considering circuit configuration; operating principal; number of components; complexity; and efficiency. This comprehensive review can be used as a guide for the suitable selection of converter topology to RES integration. Full article
(This article belongs to the Special Issue Multilevel Inverters for Utility Applications)
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