Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/1316
Title: MIMO nonlinear modeling and robust control of standalone dc photovoltaic systems
Authors: Deveci, Onur
Kasnakoğlu, Coşku
143585
Keywords: Photovoltaic
PV
Voltage regulation
MPPT
Hammerstein-Wiener
MIMO robust control
Issue Date: 13-Jul-2017
Publisher: Pergamon-Elsevier Science Ltd
Source: Deveci, O., & Kasnakoğlu, C. (2017). MIMO nonlinear modeling and robust control of standalone dc photovoltaic systems. International Journal of Hydrogen Energy, 42(28), 18064-18080.
Abstract: Multiple-input multiple-output (MIMO) modeling and simulation techniques are utilized to boost the usefulness of a common DC-output photovoltaic (PV) system. Vast studies in the literature are mostly based on single-input single-output (SISO) methods. As a result they suffer numerous unpredicted features should they be exposed to particular temperature, irradiation and load changes. These features stem from parameter errors and unmodelled dynamics of actual circuit components. Another issue is that common linearization may fail due to substantial nonlinear behavior. These are caused by switching converters run by means of pulse width modulation (PWM). As a remedy a different method relying on simulated input/output data is put to use to compute a working condition and then obtaining a linear model of the entire system around it. Multiple SISO compensators are replaced with a single MIMO robust controller based on the MIMO model, after which the controlled system is tested in simulations with varying irradiation, temperature and load resistance values. Evaluating the outcomes unveils the fact that newly designed autonomous system can run the PV panel at the maximum power point over a wide envelope of atmospheric and load combinations. Moreover the voltage value fed to a sensitive load is constant and the extra power obtained from the PV panel is used to charge the battery. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
URI: https://linkinghub.elsevier.com/retrieve/pii/S0360319917313538
https://hdl.handle.net/20.500.11851/1316
ISSN: 0360-3199
1879-3487
Appears in Collections:Elektrik ve Elektronik Mühendisliği Bölümü / Department of Electrical & Electronics Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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