NDLI: Comparative analysis of MPPT algorithms bio-inspired by grey wolves employing a feed-forward control loop in a three-phase grid-connected photovoltaic system

Content Provider	IET Digital Library
Author	Sampaio, Leonardo Poltronieri Rocha, Maykon Vichoski da Silva, Sérgio Augusto Oliveira Da Freitas, Marcelo Hideo Takami de
Abstract	It is well-known that performance of photovoltaic (PV) systems can be severely deteriorated when PV arrays are subjected to partial shading conditions, once the traditional techniques used for maximum power point tracking (MPPT) could not operate in the global maximum power point (GMPP). Thus, to overcome this problem and achieve the GMPP, four MPPT techniques bio-inspired in the grey wolf optimisation (GWO) are presented. These MPPT techniques, which are named as GWO, GWO-Beta, GWO-IC (Incremental Conductance), and GWO-P&O (Perturb and Observe), are evaluated and compared to each other by employing a double-stage three-phase grid-connected PV system, which is composed of DC/DC converter and three-phase inverter. Commonly, the DC-bus voltage regulation of double-stage PV systems presents slow dynamic behaviour to avoid disturbances in the currents injected into the grid. As a result, MPPT algorithms suffer with this problem since they must be executed considering this condition. To overcome this problem, a feed-forward control loop (FFCL) is implemented to improve the DC-bus voltage regulation during abrupt solar irradiance changes, as well as accelerating the MPPT algorithms dynamics. By means of extensive experimental and simulation results, the performance and effectiveness of the four MPPT techniques, as well as the FFCL, are evaluated.
Starting Page	1379
Ending Page	1390
Page Count	12
ISSN	17521416
Volume Number	13
e-ISSN	17521424
Issue Number	Issue 8, Jun (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rpg/13/8
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rpg.2018.5941
Journal	IET Renewable Power Generation
Publisher Date	2019-03-06
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Comparative Analysis Control of Electric Power System DC-bus Voltage Regulation Double-stage PV System Double-stage Three-phase Grid-connected PV System Feed-forward Control Loop Feedforward FFCL Global Maximum Power Point GMPP Grey Wolf Optimisation Grey Wolves GWO-Beta GWO-IC GWO-P&O Technique Incremental Conductance Invertors Maximum Power Point Trackers MPPT Algorithm MPPT Algorithm Dynamics MPPT Technique Bio-inspired Partial Shading Condition Photovoltaic Power System Photovoltaic System Power Generation Control Power Grid PV Array Slow Dynamic Behaviour Solar Irradiance Solar Power Stations Three-phase Grid-connected Photovoltaic System Three-phase Inverter Traditional Technique Voltage Control
Content Type	Text
Resource Type	Article
Subject	Renewable Energy, Sustainability and the Environment

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