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Z-source inverters are recent topological options proposed for buck-boost energy conversion with a number of possible voltage and current-type circuitries already reported in the literature. Comparing them, a common feature noted is their inclusion of a LC impedance network, placed between the dc input source and inverter bridge. This impedance network allows the output end of a voltage-type Z-source...
To date, buck-boost inverters have mostly been reported with two-level inverter topologies. For improved output waveform quality, this paper presents the design of a buck-boost three-level dual inverter supplied by a single DC source. The proposed inverter is implemented by cascading two three-phase voltage-source bridges at their AC outputs with only an additional switch added to their common DC...
This paper presents the development of two three-level cascaded Z-source inverters, whose output voltage can be stepped down or up unlike a traditional buck three-level inverter. The proposed inverters are designed using two three-phase voltage-source inverter bridges, supplied by two uniquely designed Z-source impedance networks and cascaded at either their DC sides to form a DC-link-cascaded Z-source...
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