TY - BOOK AU - Wang, Chuyang. AU - Wang, Chuyang. AU - Zhang, Li. AU - Wang, Bo. AU - Xiao, Lan. TI - Mechanism and suppression of frequency-decrease effect related to the low modulation frequency ratio in a high-ratio MMC-based DC transformer U1 - DPer 621.381 In821 August 2022 v. 37 n. 8 PY - 2022/// CY - New York ; PB - The Institute of Electrical and Electronics Engineers, Inc. , N1 - IEEE Transitions on Power Electronics, v. 37 n. 8, pages 9138-9152, August 2022 ER -