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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS)
Ahmad, Noor Syafawati
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Control & Systems Engineering Electrical & Electronics Engineering

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Determination of minimal total harmonic distortion for single-phase multilevel inverter Wong, Quan Ming; Sea, Yee Wei; Chew, Wei Tik; Yong, Wui Ven; Zaidi, Ahmad Firdaus Ahmad; Ahmad, Noor Syafawati; Ong, Siok Lan; Leong, Jenn Hwai
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 15, No 3: September 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v15.i3.pp1662-1670

Abstract

Multilevel inverters (MLIs) offer numerous advantages, such as low voltage stresses on power switches, low switching losses, and high efficiency. Switching angles applied to MLI must be selected carefully to generate an output voltage waveform with low total harmonic distortion (THD). This paper proposes an improved algorithm to determine the switching angles with low THD for MLI. The proposed algorithm has been implemented using a MATLAB script to compute a set of switching angles with low THD from 3- to 31-level cascaded H-bridge MLI (CHBMLI). A PSIM simulation model has been developed to validate the switching angles and the corresponding THDs obtained from the MATLAB script. An experimental prototype has also been developed to validate the simulation results. The results obtained from the MATLAB script, the PSIM simulation, and the experimental measurement are in good agreement.
Co-Authors Chew, Wei Tik Leong, Jenn Hwai Ong, Siok Lan Sea, Yee Wei Wong, Quan Ming Yong, Wui Ven Zaidi, Ahmad Firdaus Ahmad