Hybrid Multilevel Inverter Using Switched Capacitor Units

作者：Babaei, Ebrahim^*; Gowgani, Saeed Sheermohammadzadeh

来源：IEEE Transactions on Industrial Electronics, 2014, 61(9): 4614-4621.

DOI：10.1109/TIE.2013.2290769

• Multilevel inverter
• series inverters
• series-parallel connection
• switched capacitor

In this paper, two new topologies are proposed for multilevel inverters. The proposed topologies consist of a combination of the conventional series and the switched capacitor inverter units. The proposed topologies reduce the number of switches and isolated dc voltage sources, the variety of the dc voltage source values, and the size and cost of the system in comparison with the conventional topologies. In addition, the proposed topologies can double the input voltage without a transformer. There is no need for complicated methods to balance the capacitor voltage. The simulation and experimental results of single-phase 25- and 17-level inverters are given to prove the correct operation of the proposed topologies.

• 出版日期2014-9