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Abstract

Recently, multilevel applications have know n many improvements. Initially introduced to answer the problem of the series-connection of components in medium voltage applications, multilevel topologies have now to serve new purposes. Recent multilevel technologies have the potential to significantly reduce the size of passive filters, thus increasing efficiency and power density. With the more stringent regulations concerning harmonic emissions, more levels are needed to allow filterless operation while keeping a moderate switching frequency. In this context, the new topological family of high density advanced multilevel inverters, called cross-connected intermediate level (CCIL) voltage source inverter, is introduced in this paper and offers a novel solution to generate multiple output levels.

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