Tutorial Title: Recent Advances on Modular Multilevel Converters

Modular multilevel converters have achieved significant success in the area of high-power applications (high-voltage direct-current, renewable energy conversion, motor drives, power distribution systems, transportation). The purpose of this tutorial is to provide a systematic overview of the multilevel converters in terms of their operation principles, latest achievements, emerging applications, and remaining challenges. The tutorial will start introducing the structure and basic operation principles of the modular multilevel converters. And then, the tutorial will introduce the fault detection of submodules and fault tolerant control scheme. Afterwards, the tutorial will introduce the control of the modular multilevel converter under ac-grid faults, as well as the protection of the modular multilevel converter under dc line short-circuit faults.

Presenters’  Information

Fujin Deng, Southeast University

Fujin Deng received the Ph.D. degree in Energy Technology from the Department of Energy Technology, Aalborg University, Aalborg, Denmark, in 2012. He joined the Southeast University in 2017 and is currently a Professor in the School of Electrical Engineering and the Head of Department of Power Electronics, Southeast University, Nanjing, China. From 2013 to 2015 and from 2015 to 2017, he was a Postdoctoral Researcher and an Assistant Professor, respectively, in the Department of Energy Technology, Aalborg University, Aalborg, Denmark. He has conducted a number of research projects and published more than 100 journal papers and a book on Modualr Multilevel Converter in WILEY-IEEE PRESS. His main research interests include multilevel converters, high-voltage direct-current transmission technology, wind power generation, and offshore wind farm-power systems dynamics.

Presenters’  Information

Qiang Yu, Southeast University

Qiang Yu received the B. Eng. degree in Electrical Engineering from Jilin University, Changchun, China, in 2017. He is currently working toward the Ph. D. degree with the School of Electrical Engineering, Southeast University, Nanjing, China. He was a visiting Ph. D student in the School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, from 2021 to 2022. Mr. Yu has published 8 peer-reviewed journal articles and held 4 issued patents. His main research fields include the control and fault diagnosis of modular multilevel converter (MMC).