A Scalable Multilevel Series-Connected Ripple Suppression Unit for High Voltage DC Power Supply. - Jing Wang; Yang Liu 362; Zongjian Li; Renfeng Guan; Peijiu Sun; Chao Zhang; Zhixing He; Hongliang Wang; Wenguang Chen; Qibei Huang (IEEE Trans. Ind. Electron., 2026)