AUTHOR=Peng Maolan , Feng Lei , Hao Xiaoyu , Sun Meihui , Jiang Wen , Guo Chunyi TITLE=Flexible switching method of control strategy for MMC-HVDC converter based on AC power grid strength JOURNAL=Frontiers in Electronics VOLUME=5 YEAR=2025 URL=https://www.frontiersin.org/journals/electronics/articles/10.3389/felec.2024.1475338 DOI=10.3389/felec.2024.1475338 ISSN=2673-5857