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Performance Analysis of Single Loop Current Controller at Grid Side Inverter Regarding LCL Filter Parameters and System DelaySTOJANOVIC, L. , BAKIC, F. , MILIC, A. |
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Author keywords
current control, digital control, filtering, microgrids, system analysis and design
References keywords
grid(13), damping(9), control(9), power(8), connected(8), active(8), phase(6), inverters(5), filters(5), filter(5)
Blue keywords are present in both the references section and the paper title.
About this article
Date of Publication: 2022-11-30
Volume 22, Issue 4, Year 2022, On page(s): 55 - 64
ISSN: 1582-7445, e-ISSN: 1844-7600
Digital Object Identifier: 10.4316/AECE.2022.04007
Web of Science Accession Number: 000920289700007
SCOPUS ID: 85150293998
Abstract
In the grid-connected systems, LCL filters are widely used for eliminating the generated switching current ripples due to better attenuation in comparison with L or LC filter. However it is known that stability of digital controlled LCL filter can present a challenge due to induced delay. This paper presents conditions of system stability in dependence of filter characteristics such as resonant frequency, inductors and capacitor parameter variations. Stability analysis and system performance are observed and compared. Derived results are tested and confirmed on Hardware-in-the-loop HIL402 device. Obtained results are discussed and suggestions are provided in terms of the practical implementation of the control system. |
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Faculty of Electrical Engineering and Computer Science
Stefan cel Mare University of Suceava, Romania
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