Advanced Multilevel Power Converters for Grid Integration of Renewable Energy Resources

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

Deadline for manuscript submissions: closed (31 August 2022) | Viewed by 5727

Special Issue Editors


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Guest Editor
Department of Electrical, Electronic & Computer Engineering, University of Western Australia, Perth 6009, Australia
Interests: grid integration of renewable energy sources; photovoltaics and energy storage and design and control of multilevel power converters
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
School of Electrical Engineering and Telecommunications & Australian Energy Research Institute, The University of New South Wales, Sydney, NSW, Australia
Interests: multilevel power electronics converters; hybrid multilevel converters; modular multilevel converters (MMC); HVDC systems; pulse width modulation of power electronics; selective harmonic elimination (SHE-PWM)
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Department of Electrical, Electronic and Computer Engineering, The University of Western Australia (M018), 35 Stirling Highway, Perth, WA 6009, Australia
Interests: circuit topologies and control strategies for multilevel converters, grid integration of renewable energy; electric vehicles; static VAr compensators; energy markets; distributed power generation; energy storage; photovoltaic power systems
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Power systems across the globe are experiencing an increased integration of renewable energy resources demanding the power system operators to explore and enforce new grid-forming and grid-supporting regulations and requirements to ensure the quality and reliability of the grid. Hence, renewable energy systems are required to be equipped with advanced features and control strategies to provide the required supporting functionalities to the grid such as power reserve control, frequency response, reactive power control, and so on. Given power electronic technologies will, therefore, be responsible for the control of power between most renewable sources, energy storage devices and the grid, they will play a key role in the upcoming grid-transformation process. Multilevel converters have become a standard for such applications as medium voltage drives, HVDC and FACTS, and are promising for the integration of renewable energy sources and energy storage systems. Therefore, this Special Issue focuses on advanced multilevel converters for the integration of renewable energy resources. Topics of interest for publication include, but are not limited to:

  • Multilevel power converter topologies for renewable energy resources with and grid-forming and/or grid-supporting functionalities;
  • Modulation, control and optimisation of the multilevel converters;
  • Impact of grid-forming and grid-supporting renewable energy resources in power system operation;
  • Optimized operation of renewable energy systems in weak grids;
  • Fault-tolerant and reliable multilevel converters;
  • Voltage source and current source converters;
  • The role, design and optimisation of dc-dc conversion stages.

Dr. Georgios Konstantinou
Dr. Christoper D. Townsend
Dr. Hossein Dehghani Tafti
Guest Editors

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Keywords

  • power electronics
  • converters
  • modular multilevel converters
  • inverters
  • power semiconductor devices
  • current control
  • energy conversion
  • batteries
  • photovoltaics
  • fuel cells
  • energy efficiency
  • wave power
  • wind power
  • supercapacitors
  • storage
  • power system dynamics

Published Papers (2 papers)

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Research

14 pages, 69545 KiB  
Article
13.2 kV Class 3-Phase Solid State Transformer System Based on EtherCAT Communication
by Dong-Keun Jeong, Hyeok-Jin Yun, Si-Ho Park, Myoung-Ho Kim, Myung-Hyo Ryu, Ju-Won Baek and Ho-Sung Kim
Electronics 2022, 11(19), 3092; https://doi.org/10.3390/electronics11193092 - 27 Sep 2022
Cited by 2 | Viewed by 2116
Abstract
This paper presents a 13.2 kV class 3-phase solid-state transformer (SST) based on EtherCAT communication. In general, when the structure of the unit module is determined, the number of high-frequency isolated transformers (HFIT) is also proportional to the number of modules. The structure [...] Read more.
This paper presents a 13.2 kV class 3-phase solid-state transformer (SST) based on EtherCAT communication. In general, when the structure of the unit module is determined, the number of high-frequency isolated transformers (HFIT) is also proportional to the number of modules. The structure most considered in SST is a 1:1 combination of AC/DC converter and DC/DC converter. To optimally implement a 3-phase SST, a topology for reducing passive elements such as switching elements and HFIT is proposed. It also describes the design of HFIT used in DC/DC converter. EtherCAT communication with high transmission speed and expandability is applied to control the SST composed of unit modules stably, and a multi-core microcontroller unit (MCU) is applied to achieve both a high-speed communication cycle and complicated control algorithm execution. The discussions are validated using a 300 kW 13.2 kV class 3-phase SST prototype in various conditions. Full article
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12 pages, 5721 KiB  
Article
A Dual Source Switched-Capacitor Multilevel Inverter with Reduced Device Count
by Mohammad Fahad, Mohd Tariq, Mohammad Faizan, Atib Ali, Adil Sarwar, Hossein Dehghani Tafti, Shafiq Ahmad and Adamali Shah Noor Mohamed
Electronics 2022, 11(1), 67; https://doi.org/10.3390/electronics11010067 - 26 Dec 2021
Cited by 11 | Viewed by 2817
Abstract
Implementing voltage boost multilevel inverter topologies for PV and fuel cell energy sources is highly advantageous. Switched-capacitor multilevel inverters (SCMLI) have a step-up feature with low device requirements and can remove the need for high gain dc-dc converters leading to reduced overall system [...] Read more.
Implementing voltage boost multilevel inverter topologies for PV and fuel cell energy sources is highly advantageous. Switched-capacitor multilevel inverters (SCMLI) have a step-up feature with low device requirements and can remove the need for high gain dc-dc converters leading to reduced overall system bulk. This work proposes a dual input SCMLI to achieve an output of nineteen levels while using a low number of components and high boosting factor and self-balancing of capacitor voltages. A comprehensive analysis of the proposed structure is presented, focusing on component requirements, cost and dynamic performance. The efficiency and loss distribution during operation is also provided. The operation and real-time performance of the SCMLI have been verified by simulation. Experimental results further validate the simulation results. Full article
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