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

Soltani, Hamid, Zare, Firuz, & Adabi Firouzjaee, Jafar (2007) Effects of switching time on output voltages of a multilevel inverter used in high frequency applications. In Australasian Universities Power Engineering Conference, 2007 (AUPEC 2007), 9-12 December 2007, Perth, Western Australia.

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Abstract

Employing multilevel inverters is a proper solution to reduce harmonic content of output voltage and electromagnetic interference (EMI) 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 analyze the effect of switching time on harmonic contents of output voltage in high frequency applications when a switching time is not negligible compare to a switching cycle. FFT 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: 14287
Item Type: Conference Paper
Keywords: PWM invertors, electromagnetic interference, fast Fourier transforms, harmonic analysis, switching convertors
DOI: 10.1109/AUPEC.2007.4548112
ISBN: 9780646494883
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > ELECTRICAL AND ELECTRONIC ENGINEERING (090600)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Copyright Owner: Copyright 2007 IEEE
Copyright Statement: Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Deposited On: 05 Aug 2008
Last Modified: 29 Feb 2012 23:34

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