Abstract
In this paper, two new topologies of multilevel inverters based on the series and parallel connection of dc voltage sources are proposed. The optimal topologies with minimum number of switches and dc voltage sources are computed to produce the maximum number of output voltage levels with minimum blocked voltage by switches. The proposed topologies are compared with some conventional topologies. The proposed topologies have been verified from viewpoint of the number of switches, number of dc voltage sources and the maximum blocked voltage by switches. Finally, to verify the theoretical issues, the simulation results for single-phase 17-level and 41-level inverters are presented. In addition, the experimental results of a single-phase 17-level inverter are given to prove the correctness operation of the proposed topologies.
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