Pham VP, Nguyen Đức D, Tran HC, Nguyen TT, Le PH, Nguyen HL, Pham CH. Improved NLM modulation method without measuring capacitor voltage applied to Modular Multilevel Converter. MCA [Internet]. 2025Feb.13 [cited 2025May9];28(3):62-8. Available from: https://mca-journal.org/index.php/mca/article/view/228