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An adaptive feed-forward phase locked loop for grid synchronization of renewable energy systems under wide frequency deviations

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dc.citedby14
dc.contributor.authorKathiresan A.C.en_US
dc.contributor.authorPandiaRajan J.en_US
dc.contributor.authorSivaprakash A.en_US
dc.contributor.authorBabu T.S.en_US
dc.contributor.authorIslam M.R.en_US
dc.contributor.authorid57217871678en_US
dc.contributor.authorid57218836035en_US
dc.contributor.authorid55375876400en_US
dc.contributor.authorid56267551500en_US
dc.contributor.authorid55765000567en_US
dc.date.accessioned2023-05-29T08:07:44Z
dc.date.available2023-05-29T08:07:44Z
dc.date.issued2020
dc.descriptionadaptive management; algorithm; energy planning; filter; hardware; power plant; real time; stability analysisen_US
dc.description.abstractSynchronization is a crucial problem in the grid-connected inverter's control and operation. A phase-locked loop (PLL) is a typical grid synchronization strategy, which ought to have a high resistance to power system uncertainties since its sensitivity influences the generated reference signal. The traditional PLL catches the phase and frequency of the input signal via the feedback loop filter (LF). In general, to enhance the steady-state capability during distorted grid conditions generally, a filter tuned for nominal frequency is used. This PLL corrects large frequency deviations around the nominal frequency, which increases the PLL's locking time. Therefore, this paper presents an adaptive feed-forward PLL, where the input signal frequency and phase under large frequency deviations are tracked precisely, which overcomes the above-mentioned limitations. The proposed adaptive PLL consists of a feedback loop that reduces the phase error. The feed-forward loop predicts the frequency and phase error, and the frequency adaptive FIR filter reduces the ripples in output, which is due to input distortions. The adaptive mechanism adjusts the gain of the filter in accordance with the supply frequency. This reduces the phase and frequency error and also decreases the locking time under wide frequency deviations. To verify the effectiveness of the proposed adaptive feed-forward PLL, the system was tested under different grid abnormal conditions. Further, the stability analysis has been carried out via a developed prototype test platform in the laboratory. To bring the proposed simulations into real-time implementations and for control strategies, an Altera Cyclone II field-programmable gate array (FPGA) board has been used. The obtained results of the proposed PLL via simulations and hardware are compared with conventional techniques, and it indicates the superiority of the proposed method. The proposed PLL effectively able to tackle the different grid uncertainties, which can be observed from the results presented in the result section. � 2020 by the authors.en_US
dc.description.natureFinalen_US
dc.identifier.ArtNo7048
dc.identifier.doi10.3390/su12177048
dc.identifier.issue17
dc.identifier.scopus2-s2.0-85090393682
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85090393682&doi=10.3390%2fsu12177048&partnerID=40&md5=2bb28706182d1579556723eecf451893
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/25270
dc.identifier.volume12
dc.publisherMDPIen_US
dc.relation.ispartofAll Open Access, Gold, Green
dc.sourceScopus
dc.sourcetitleSustainability (Switzerland)
dc.titleAn adaptive feed-forward phase locked loop for grid synchronization of renewable energy systems under wide frequency deviationsen_US
dc.typeArticleen_US
dspace.entity.typePublication
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