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In this paper, a novel hybrid cascade asymmetrical multilevel converter is proposed. The converter is based on connection of an asymmetric multilevel converter and an H-bridge converter. The multilevel waveform is synthesized by adding of each converter output voltage. The principle of the converter is analyzed. However the new scheme requires fixed floating supplies. Selective harmonic elimination...
In this paper, a hybrid cascade asymmetrical multilevel converter is proposed. The converter is based on connection of multiple single-phase asymmetrical multilevel converter modules. The multilevel waveform is synthesized by addition or of the voltages generated by the different cells. The primary advantage of the converter is that the number of voltage levels can be increased for a given number...
In this paper, a novel asymmetrical multilevel converter is proposed which is composed a 3-level leg and a 2-level leg. The principle of the converter is analyzed. The new schema requires fixed insulated supplies instead of capacitors. Selective harmonic elimination method is used to eliminate the specified harmonics in the output voltage. Then the switching angles are computed to eliminate the low...
This paper presents selective harmonic elimination method for cascade multilevel converters to eliminate the specified harmonics in the output voltage. The principle of the converter is analyzed. Then the switching angles are computed to eliminate the low order harmonics in theory. And the gating signals for the converter are given. An experimental 7-level H-bridge multilevel converter was used to...
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