| Title |
A Snubber Circuit for Flying Capacitor Multilevel Inverter and Converter |
| Authors |
이민수(Lee, Min-Su) ; 성현제(Seong, Hyeon-Je) ; 김인동(Kim, In-Dong) ; 노의철(No, Ui-Cheol) ; 조철제(Jo, Cheol-Je) |
| Keywords |
flying capacitor ; multilevel inverter ; multilevel converter ; snubber |
| Abstract |
This paper proposes a snubber circuit for flying capacitor multilevel inverter and converter. The proposed snubber circuit makes use of Undeland snubber as basic snubber unit. It has such an advantage of Undeland snubber used in the two-level inverter. Compared with conventional RCD/RLD snubber for multileve1 inverter and converter, the proposed snubber keeps such good features as fewer number of components, reduction of voltage stress of main switching devices due to low overvoltage, and improved efficiency of system due to low loss snubber. In this paper, the proposed snubber is applied to three-level flying capacitor inverter and this feature is demonstrated by computer simulation and experimental result. |