Chen Sizhe1, Xu Mengran1, Fan Yuanliang2, Chang Le1, Yang Ling1
1. School of Automation Guangdong University of Technology Guangzhou 510006 China; 2. State Grid Fujian Electric Power Research Institute Fuzhou 350007 China
Abstract：Multilevel inverters based on switched-capacitor have the advantages of simple circuit topology and self-balancing of capacitor voltages. However, the existing switched-capacitor based multilevel inverter has a large number of components and large voltage stress. For this reason, this paper proposes a nine-level inverter. The circuit achieves quadruple boost nine-level output through a smaller number of components and lower voltage stress, and has a lower cost and volume. Combining the nearest level modulation and the fundamental frequency modulation, the switch control signals are generated. Moreover, the satisfied AC (Alternating Current) output is realized through the orderly on-off of switches. The operation principle, modulation strategy and circuit parameters of proposed inverter are analyzed in detail. Finally, a prototype is built for experiment to prove the effectiveness and feasibility of proposed inverter.
陈思哲, 徐梦然, 范元亮, 常乐, 杨苓. 一种基于开关电容的九电平逆变器[J]. 电工技术学报, 2022, 37(4): 931-941.
Chen Sizhe, Xu Mengran, Fan Yuanliang, Chang Le, Yang Ling. A Nine-Level Inverter Based on Switched-Capacitor. Transactions of China Electrotechnical Society, 2022, 37(4): 931-941.
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2022, Vol. 37 
