Assoc. Prof. Xiangmin Xie, Qingdao University, China
Xiangmin Xie, Ph.D., College of Electrical Engineering, Qingdao University, M.S. Supervisor, serves as a member of the Specialized Committee on Power Quality of the CPSS, and as a member of the Youth Editorial Board of the Chinese core journal Power Supply, serves as the session chair of the IEEE I& CPS Asia 2022, 2023 PowerCon, 2024 EENES, and as a reviewer for IEEE TIE/TPD/TIA/TIM, CSEE JPES, IJEPES, APEN, and Power Supply. He has published more than 20 papers as the first/corresponding author in journals such as IEEE TIE/TPD/TIM, Applied Energy and CSEE, etc., of which 2 ESI 1% highly cited papers. He has hosted 1 NSFC project, 2 Shandong Natural Science Foundation general projects, 1 China Postdoctoral Science Foundation general project, 4 projects of industry-university-research cooperation with enterprises. His research focuses on monitoring, analysis, modeling, evaluation, prediction and treatment of power quality harmonics and imbalance, localization and responsibility division of harmonic sources, and probabilistic harmonic current calculation in distribution networks.
Assoc. Prof. Futian Qin, Shandong University, China
Futian Qin，Male, born in 1992, Ph.D. He received his B.Eng. degree in Electrical Engineering and Automation from Shandong Agricultural University in July 2015, and his Ph.D. degree in Electrical Engineering from Shandong University in June 2021. From December 2019 to June 2020, he was a joint training student at the Energy Research Institute, Nanyang Technological University, Singapore. From August 2021 to December 2025, he worked at the School of Information and Automation, Qilu University of Technology (Shandong Academy of Sciences). Since December 2025, he has been working at the School of Electrical Engineering, Shandong University. He serves as a reviewer for international journals such as IEEE TIE, TPE, and IJEPES. In recent years, he has published over 15 papers as the first/corresponding author in international journals and conferences, all indexed by SCI/EI. He has presided over one Youth Project of the Shandong Provincial Natural Science Foundation, one university (academy) talent project, and two corporate horizontal projects. He has also participated in one General Project of the National Natural Science Foundation of China, and has been granted/applied for 7 national invention patents. His research interests mainly focus on modular multilevel converters, flexible HVDC transmission, offshore wind power transmission, and grid-forming control.
Speech Title: A Modular Multilevel Series/Parallel Converter With Ability of Parallelization Across Submodules
Abstract: Recently, modular multilevel series/parallel converters (MMSPCs) have witnessed an upward trend, where the submodules (SMs) are allowed to be connected not only in series but also in parallel. The parallel operation of SMs offers significant advantages, including sensorless capacitor voltage balancing, arm current sharing, SM capacitance reduction, and system efficiency improvement. However, in the conventional MMSPC, parallel connection is typically limited to adjacent SMs. To achieve higher voltage and more output levels of MMSPC with a limited number of SMs, the SM capacitor voltages need to be configured differently, similar to those in an asymmetric cascaded H-bridge (CHB) converter. This configuration means that parallel connection is not allowed between adjacent SMs but across one or more SMs. Therefore, this article proposes a novel MMSPC with the ability of parallelization across SMs, allowing each SM to be designedly connected in parallel with any other SM. Besides, the tailored modulation strategy is developed to arrange the connection sequence and state among SMs, which is crucial to the normal operation of the proposed MMSPC.