International Journal of Research in Advanced Electronics Engineering
2021, Vol. 2, Issue 1, Part A
Re-configuration and simulation of three-phase seven-level cascaded h-bridge multilevel inverter
Author(s): Yakubu Adem
Abstract: Conventional cascaded multilevel inverter topologies exhibit a number of undesirable shortfalls such as low efficiency, increase in circuit complexity, high cost, high total harmonic distortion (THD) and high switching losses. This informed the basis of proposing a more reliable cascaded H-bridge multilevel inverter and reduced number of switches which is capable of mitigating these shortfalls. In this journal the number of switches was reduced from thirty six to eighteen and DC sources were reduced from nine to six to give the three-phase output power. The power circuit is tested using different switching control techniques namely alternate phase opposition disposition (APOD), phase disposition (PD) and phase opposition disposition (POD) as carrier signals. The results of the power quality measurements from the three switching control techniques were compared. From the simulation results, the least and highest THD was obtained at the modulation index of 1.0 and 0.2. Also the highest and lowest output voltage, current and power obtained for APOD, PD and POD carrier signal at modulation index of 1.0 and 0.2 respectively. The finding of this work established that as modulation index increases, the THD decreases and the values of the output voltage, current and power increases.
Pages: 10-16 | Views: 686 | Downloads: 346
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How to cite this article:
Yakubu Adem. Re-configuration and simulation of three-phase seven-level cascaded h-bridge multilevel inverter. Int J Res Adv Electron Eng 2021;2(1):10-16.