Multilevel Converters for Large-Scale Grid-Connected Systems

Dear Colleagues,

Over recent years, the increasing integration of renewable energy sources, including electric vehicles (EV), high-voltage direct current (HVDC) transmission, flexible AC transmission systems (FACTS), and energy storage systems (ESS),  has fed the need for advanced technologies in large-scale grid-connected systems. Multilevel converters (MCs) have emerged as significant technology in power electronics, providing reliable and efficient solutions for large-scale grid-connected systems. This power converter is characterized by its ability to synthesize high-quality voltage waveforms with reduced harmonic content and has attracted broad research interest in various applications. The MC employs multiple semiconductors, such as the neutral-point clamped (NPC), flying capacitor (FC), and cascaded H-bridge (CHB) topologies, switching devices in modular configurations. MC operation focuses on the capacity to mitigate harmonic distortion, improve power quality, and reduce switching losses. Moreover, MCs can significantly enhance the controllability, flexibility, and overall efficiency of power conversion processes within large-scale grid-connected systems.

This Special Issue intends to collect the latest research on multilevel converter topologies, emerging applications, recent research, and field results in power systems. Additionally, authors are welcome to submit research design and controls of applications based on multilevel power converters for distributed energy resources. Topics of interest include, but are not limited to, the following topics:

• Multilevel converter topologies and modulation techniques for large-scale grid integration;
• Control strategies for improving grid stability, power quality, and energy efficiency;
• Multilevel converters in renewable energy systems, such as wind, solar, and energy storage;
• Application of multilevel converters in high-voltage direct current (HVDC) transmission systems;
• Emerging technologies and advancements in multilevel converter design and operation;
• Control strategies based on artificial intelligence for multilevel converter;
• Application of modular multilevel converters structures for large-scale grid integration.

Dr. Joaquim Monteiro
Dr. Hamed Jafari Kaleybar
Guest Editors

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• multilevel converters
• power electronics
• power control system
• modular multilevel converters
• power semiconductor devices
• fault-tolerant operation
• energy efficiency
• power quality
• grid-conneted systems
• multilevel control strategies