文章基本信息

标题：A New Approach to Suppress DC-link Voltage Oscillations for a Grid Connected Photovoltaic System
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作者：Om Prakash Pahari ; Bidyadhar Subudhi
期刊名称：IFAC PapersOnLine
印刷版ISSN：2405-8963
出版年度：2018
卷号：51
期号：1
页码：261-266
DOI：10.1016/j.ifacol.2018.05.065
语种：English
出版社：Elsevier
摘要：AbstractA fixed size perturbation in a Maximum Power Point Tracking (MPPT) algorithm yields excessive oscillations of operating point around the MPP and thus causes fluctuations in the dc link voltage and flickers in the injected grid current. In this paper, we propose a new adaptive P&O MPPT by employing a Proportion-Integral (PI) controller to generate variable perturbations which eliminates the steady state error and yields faster settling time in the MPP tracking response. A comparative analysis is made using simulations in MATLAB/ Simulink first then experimental studies on a prototype of grid connected PV system (GCPVS) is pursued. The obtained results are analyzed and it is found that the adaptive MPPT effectively reduces the dc-link voltage oscillations and injected grid current flickering.
关键词：KeywordsAdaptive Perturb & ObservePhotovoltaic SystemGrid IntegrationMaximum Power Point Tracking