Modeling of A Single Phase 7-Level Cascaded H-Bridge Multilevel Inverter

Buswig, Yonis.m.yonis and Utomo, W.M and Afarulrazi, Abu Bakar and Suhaila, Alias and Sim, S.Y. and Muhammad Ikhsan, Setiawan and Mudjanarko, Sri Wiwoho and Agus, Sukoco and Taufik, Taufik (2018) Modeling of A Single Phase 7-Level Cascaded H-Bridge Multilevel Inverter. International Journal of Engineering and Technology(UAE), 7 (2.6). pp. 327-330. ISSN 2227-524X

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Abstract

Recently, almost all industrial devices are mostly built on electronic devices which are precisely sensitive to harmonic. In order to meet the requirement from the industries demand aimed at a free-harmonics and high power rating source is remarkably increased in past few years. An inverter which a device or electric circuit that convert direct current to alternating current is one of the electronic devices that give concern to researchers for improvement of generating a neat power source. The inverter can be categorized into a single level and multilevel inverter. As compared to single level inverter, multilevel inverter offers minimum harmonic distortion and higher power output. This paper presents a model of multilevel inverter using 7-level Cascaded H-Bridge of multilevel DC-AC inverter to reduce total harmonic distortion with different sinusoidal pulse width modulation such as phase disposition and phase opposition disposition. Simulation output of single phase multilevel inverter cascaded H-bridge are analysed and verified in the Matlab/Simulink software. The result show that the 7-level cascaded H-Bridge multilevel inverter with phase disposition technique generate less total harmonic distortion if it is compared to the phase opposition disposition technique.

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