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A New Three Phase Seven Level Asymmetrical Inverter with Hybrid Carrier and Stepped Reference

by Johnson Uthayakumar R., Natarajan S. P., Bensraj R.
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International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Volume 61 - Number 2
Year of Publication: 2013
Authors: Johnson Uthayakumar R., Natarajan S. P., Bensraj R.
10.5120/9901-4488

Johnson Uthayakumar R., Natarajan S. P., Bensraj R. . A New Three Phase Seven Level Asymmetrical Inverter with Hybrid Carrier and Stepped Reference. International Journal of Computer Applications. 61, 2 ( January 2013), 22-28. DOI=10.5120/9901-4488

@article{ 10.5120/9901-4488,
author = { Johnson Uthayakumar R., Natarajan S. P., Bensraj R. },
title = { A New Three Phase Seven Level Asymmetrical Inverter with Hybrid Carrier and Stepped Reference },
journal = { International Journal of Computer Applications },
issue_date = { January 2013 },
volume = { 61 },
number = { 2 },
month = { January },
year = { 2013 },
issn = { 0975-8887 },
pages = { 22-28 },
numpages = {9},
url = { https://ijcaonline.org/archives/volume61/number2/9901-4488/ },
doi = { 10.5120/9901-4488 },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Journal Article
%1 2024-02-06T21:08:00.413057+05:30
%A Johnson Uthayakumar R.
%A Natarajan S. P.
%A Bensraj R.
%T A New Three Phase Seven Level Asymmetrical Inverter with Hybrid Carrier and Stepped Reference
%J International Journal of Computer Applications
%@ 0975-8887
%V 61
%N 2
%P 22-28
%D 2013
%I Foundation of Computer Science (FCS), NY, USA
Abstract

This paper presents new hybrid modulation strategies for the chosen three phase seven level Asymmetrical Multi Level Inverter (AMLI) with Stepped reference. Performance indicesused are Total Harmonic Distortion (THD), Form Factor(FF),Crest Factor(CF),Root Mean Square(RMS) value of output voltage and DC bus utilization. The combination of inverted sine carrier and triangular carrier is used as hybrid carrier to produce triggering pulses for the power switches used in the proposed three phase seven level AMLI. This paper also investigates the potential of using hybrid carrier with the existing strategies such as Phase Disposition Pule Width Modulation (PDPWM),Phase Opposition Disposition PWM(PODPWM),Alternate Phase Opposition Disposition PWM(APODPWM)and Variable Frequency PWM (VFPWM) techniques for carrier. The simulation is done in MATLAB/SIMULINK and the results are presented for all modulation strategies. It is observed that hybrid PDPWM provides relatively better DC bus utilization and creates relatively less distortion for ma=0. 7-1

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Index Terms

Computer Science
Information Sciences

Keywords

CMLI PWM THD PD POD APOD PS CO VF Hybrid Carrier

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