An Overview of Modular Multilevel Converter

Among the Multilevel Converter topologies, Modular Multilevel Converter (MMC) has been an emerging technology with a modular structure for medium or high power applications. In the last years, outstanding researches have been done regarding to operation principles and control structures of the MMC. Thus, Modular Multilevel Converter has been a significant topic for both industrial applications and academic surveys. In this paper, an overview of the power circuit analysis and operation principle of the Modular Multilevel Converter topology is discussed. Different submodule topologies are mentioned. Then, advantage sides of the MMC and that of application areas are reviewed. Finally, Control structures of the MMC are briefly handled.