A single-phase cascaded multilevel inverter composed of four-level sub-multilevel cells

This paper presents a novel cascaded multilevel inverter topology. The series connection of proposed basic cells is the main core of this topology. Different methods to determine the values of DC voltage sources in cells are investigated. Advantages and disadvantages of this topology in comparison with classical topologies are discussed. Symmetric and asymmetric structures of this topology are well analyzed through simulations.

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