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Analytical and simulation comparison of sinusoidal and resistive modulation strategies for network-friendly three-phase grid-connected inverters

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Link to refer to this document:
http://hdl.handle.net/10890/4014
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  • Periodica Polytechnica archív cikkek [78]
Abstract
The growing numbers of consumers distort AC networks with harmonics. Therefore suppression of the network pollution should be considered. This problem can be solved by using ``network-friendly´´ converters. In our study we examined two modulation strategies of three-phase grid-connected inverters. If these methods are used, converters behave like sinusoidal or resistive current loads of the network, which enables ``network-friendly´´ operation. The examined sinusoidal and the resistive modulation strategies are known, but the differences between the two methods have not been studied before [1,2]. This paper deals with the comparison of these two strategies. First, the analytical examination is presented. By comparing their consumed RMS currents we defined a coefficient (k[%]), which depends only on the total harmonic distortion of the network voltage (THD_u). We demonstrated that at high THD_u resistive modulation method is more favorable. Then simulation examination is discussed, by presenting our model of the three-phase four quadrant converter. Finally simulation results are represented in this article.
Title
Analytical and simulation comparison of sinusoidal and resistive modulation strategies for network-friendly three-phase grid-connected inverters
Author
Balázs, Gergely György
Schmidt, István
M. Horváth
Date of issue
2010
Access level
Open access
Publisher
Budapest University of Technology and Economics
Language
en
Page
21 - 28
Subject
converter control, harmonics, modulation strategy, optimal control, power quality, Park vector theory, pulse width modulation (PWM)
Version
Postprint
Identifiers
MTMT: 2654775
Scopus: 84856825098
Title of the container document
Periodica Polytechnica - Electrical Engineering
Volume of container document
54
Number of container document
1-2
ISSN, e-ISSN
0324-6000
1587-3781
Document type
folyóiratcikk
Document genre
Tudományos cikk

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