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Abstract
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In this study, a novel transformer based cascaded multilevel inverter is presented. The proposed inverter can
operate in both symmetric and asymmetric topologies. The presented inverter benefits from the advantages such as
reduced number of power switches and reduced total peak inverse voltage of the switching components. The numbers
of insulated gate driver circuits are also decreased with respect to the power switches. Furthermore, the presented
topology requires just a single DC source. In addition, the numbers of on-state switches in the current paths are
reduced. Therefore the voltage drops across the switches are mitigated and as a result the efficiency of the presented
inverter is improved. The mentioned advantages cause the implementation cost to be reduced. The operation of the
converter is discussed thoroughly for both symmetric and asymmetric operations. The feasibility of the presented
inverter topology is validated using the simulation results. Experimental results under 1.5 kW are also added to justify
the theoretical analyses.
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