2/2015 - 11 |
A Current-Forced Line-Commutated Inverter for Single-Phase Grid-Connected Photovoltaic Generation SystemsUNLU, M. , CAMUR, S. , BESER, E. , ARIFOGLU, B. |
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Author keywords
inverter, photovoltaic systems, thyristor circuits, total harmonic distortion
References keywords
power(18), grid(13), connected(12), systems(10), line(6), inverter(6), commutated(6), single(5), photovoltaic(5), phase(5)
Blue keywords are present in both the references section and the paper title.
About this article
Date of Publication: 2015-05-31
Volume 15, Issue 2, Year 2015, On page(s): 85 - 92
ISSN: 1582-7445, e-ISSN: 1844-7600
Digital Object Identifier: 10.4316/AECE.2015.02011
Web of Science Accession Number: 000356808900011
SCOPUS ID: 84979846322
Abstract
A simple power electronic interface based on the line-commutated inverter (LCI) has been developed in order to inject sinusoidal current to the grid for single-phase grid-connected photovoltaic (PV) energy generation systems. The proposed inverter facilitates controlling the injecting/grid current with a controllable power factor in contrast to the conventional LCI system. It is achieved that the total harmonic distortion (THD) of the injecting currents for the different firing angles/power factors and reference currents is about 5% or less than 5%. Thus, the grid-connected standards for injecting current are satisfied without filter equipment unlike the conventional LCI system. The proposed system has been built in MATLAB/Simulink and examined experimentally on PV array of 160 W. The simulation and experimental results are better performance than the conventional line-commutated inverter methods reported in the literature. The proposed LCI has a simple and robust structure, and it can be easily synchronized with grid thanks to self-latching property of SCRs. Therefore, it is a good alternative for the power transferring from PV panels to the utility grid in grid-connected PV systems. |
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Stefan cel Mare University of Suceava, Romania
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