Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/88878
Title: An adaptive control scheme for flexible power point tracking in photovoltaic systems
Authors: Dehghani Tafti, Hossein
Sangwongwanich, Ariya
Yang, Yongheng
Pou, Josep
Konstantinou, Georgios
Blaabjerg, Frede
Keywords: Adaptive Voltage-Step Calculation
Constant Power Generation
DRNTU::Engineering::Electrical and electronic engineering::Power electronics
Issue Date: 2018
Source: Dehghani Tafti, H., Sangwongwanich, A., Yang, Y., Pou, J., Konstantinou, G., & Blaabjerg, F. (2018). An adaptive control scheme for flexible power point tracking in photovoltaic systems. IEEE Transactions on Power Electronics, In press. doi:10.1109/TPEL.2018.2869172
Series/Report no.: IEEE Transactions on Power Electronics
Abstract: One of the major concerns associated with the increasing penetration of grid-connected photovoltaic (PV) power plants is the operational challenges (e.g., overloading and overvoltage), imposed due to the variability of PV power generation. A flexible power point tracking (FPPT), which can limit the PV output power to a specific value, has thus been defined in grid-connection regulations to tackle some of the integration challenging issues. However, the conventional FPPT algorithm based on the perturb and observe method suffers from slow dynamics. In this paper, an adaptive FPPT algorithm is thus proposed, which features fast dynamics under rapidly changing environmental conditions (e.g., due to passing clouds), while maintaining low power oscillations in steady-state. The proposed algorithm employs an extra measured sampling at each perturbation to observe the change in the operating condition (e.g., solar irradiance). Afterwards, the voltage-step is adaptively calculated following the observed condition (e.g., transient or steady-state) in a way to improve the tracking performance. Experimental results on a 3-kVA grid-connected single-phase PV system validate the effectiveness of the proposed algorithm in terms of fast dynamics and high accuracy under various operational conditions.
URI: https://hdl.handle.net/10356/88878
http://hdl.handle.net/10220/46007
ISSN: 0885-8993
DOI: http://dx.doi.org/10.1109/TPEL.2018.2869172
Rights: © 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The published version is available at: [http://dx.doi.org/10.1109/TPEL.2018.2869172].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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