Unified analytical equation for theoretical determination of the harmonic components of modern PWM strategies

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4 Citations (Scopus)

Abstract

Pulse width modulation (PWM) is a key element of a voltage source inverter, inverter which is widely used for electric motor control and electric energy conversion. Several PWM methods have been proposed in the literature, focusing on performance, ease of implementation, and maximization of the transfer ratio. The difference between most of the proposed modulation methods like sine-triangular, SVM, and 120 - 60 - 30 Discontinuous PWM consists in the redistribution of the time-length applied for the zero voltage vectors during a
fundamental frequency period. This paper presents a unified analytical equation for determining the theoretical spectra components for all the carrier based PWM methods with redistributed zero space vector time-length using the double Fourier integral analysis. The proposed unified equation can also be used for determination of the phase and line-to-line voltage spectra when the modulator works in over-modulation region. Moreover, the effect of the DC-link voltage ripple on the line-to-line voltage spectra is also considered. The experimental results show a very good agreement with the theoretically calculated spectra.
Original languageEnglish
Title of host publicationProceedings of the 37th Annual Conference of IEEE Industrial Electronics Society, IECON 2011
Number of pages6
Place of PublicationMelbourne, Australia
PublisherIEEE Press
Publication dateNov 2011
Pages1648 -1653
ISBN (Print)978-1-61284-969-0
DOIs
Publication statusPublished - Nov 2011
Event37th Annual Conference of IEEE Industrial Electronics Society, IECON 2011 - Melbourne, Australia
Duration: 7 Nov 201110 Nov 2011

Conference

Conference37th Annual Conference of IEEE Industrial Electronics Society, IECON 2011
CountryAustralia
CityMelbourne
Period07/11/201110/11/2011

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