Novel Hybrid Cascade Asymmetrical Converter Based on Asymmetrical Converter

In this paper, a novel hybrid cascade asymmetrical multilevel converter is proposed. The novel converter is based on connection of multiple single-phase asymmetrical multilevel converter modules. The principle of the converter is analyzed. Subharmonic PWM method is employed in the topology. A two-module single-phase converter was constructed in the laboratory. Experimental results are presented to verify the proposed method.