Abstract
Traditional multilevel inverters in high voltage high power applications have some problems associated with their low frequency switching which produces high harmonic distortion. To solve the problem, this paper presents a topology of a modified multilevel cascade voltage source inverter (VSI) with different DC voltage sources. Also, the modified multilevel cascade VSI using H-bridge is modeled and analyzed with circuit DQ transform in detail. To implement the novel multilevel Inverter, a hybrid modulation strategy is presented through theoretical analysis. The simulation and experimental results are given to verify the feasibility.
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