4.4 Article

A modified asymmetric cascaded multilevel DC-AC converter with switched diodes using FPGA processor implementation

Journal

MICROPROCESSORS AND MICROSYSTEMS
Volume 74, Issue -, Pages -

Publisher

ELSEVIER
DOI: 10.1016/j.micpro.2020.103019

Keywords

FPGA processor board; DC-AC converter; Cascaded multilevel inverter (CMLI); Hybrid modulation; Reduced switches; Switched diodes

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A modified cascaded multilevel DC-AC converter using switched diodes is presented in this paper. This DC-AC converter produces great amount of voltage levels with minimized components by using hybrid modulation. It has two DC-AC converters coupled in cascade. First one is high frequency DC-AC converter and second one is low frequency DC-AC converter. The high frequency DC-AC converter is only capable to generate two levels with high frequency but the low frequency DC-AC converter is capable to produce great amount of voltage level by utilizing switched diodes. It reduces switching losses, size, cost and volume. Simulation of the circuit is done through MATLAB. The switching algorithm is realized by Spartan 6 FPGA processor board. Simulation outcomes are validated through experimental setup. (C) 2020 Elsevier B.V. All rights reserved.

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