Multilevel converters are used in various industrial, commercial, and domestic applications, such as grid-connected systems, HVDC transmission lines, active power filters, UPS, electrical drives, renewable power systems, etc. The efforts of researchers and industry has led to rapid and continual development in this field, which resulting in a wide variety of multilevel converter topologies, modulation techniques, and control strategies that enhance power quality, improve efficiency, and gains versatility. Despite this, there is still plenty of room for new improvements and proposals, as the control of such converters can be tackled from different perspectives aimed at different applications. This Special Issue covers different aspects related to the design of control systems for multilevel converters, such as: modelling approaches, controller design, modulation techniques, fault-tolerant control, and performance analysis. The topics of interest include, but are not limited to: Modelling and control issues for new topologies of multilevel converters; New modulation strategies for multilevel converters; Stability analysis of multilevel converters; Fault-tolerant capability of multilevel converters and associated control methods; Control design and implementation issues for high-efficiency multilevel converters; Control techniques for grid-connected multilevel converters: issues and performance when connected to microgrids, weak grids, or working in islanded mode; Control approaches for medium- and high-voltage applications; Control, dynamics, and performance of multilevel converters in selected applications: aircraft, marine, space, electric vehicles, transmission lines, etc.
Keywords: multilevel converters; modulation techniques; control methods; medium- and high-power systems; renewable energy sources; dynamic analysis and control.