Effects of switching time on output voltages of a multilevel inverter used in high frequency applications

Soltani, Hamid, Adabi Firouzjaee, Jafar, & Zare, Firuz (2009) Effects of switching time on output voltages of a multilevel inverter used in high frequency applications. Australian Journal of Electrical & Electronics Engineering, 5(2).

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Abstract

Employing multilevel inverters is a proper solution to reduce harmonic content of output voltage and electromagnetic interference in high power electronic applications. In this paper, a new pulse width modulation method for multilevel inverters is proposed in which power devices’ on-off switching times have been considered. This method can be surveyed in order to analyse the effect of switching time on harmonic contents of output voltage in high frequency applications when a switching time is not negligible compared to a switching cycle. Fast Fourier transform calculation and analysis of output voltage waveforms and harmonic contents with regard to switching time variation are presented in this paper for a single phase (3, 5)-level inverters used in high voltage and high frequency converters. Mathematical analysis and MATLAB simulation results have been carried out to validate the proposed method.

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ID Code: 31156
Item Type: Journal Article
Refereed: Yes
Additional URLs:
Keywords: Switching Time, Multilevel Inverter, High Frequency , pulse width modulation
ISSN: 1448-837X
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Past > Schools > School of Engineering Systems
Copyright Owner: Copyright 2009 Institution of Engineers Australia
Deposited On: 07 Mar 2010 23:55
Last Modified: 10 Aug 2011 17:33

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