Optimized Adaptive Perturb and Observe Maximum Power Point Tracking Control for Photovoltaic Generation

Maximum Power Point Tracking (MPPT) methods are used in photovoltaic (PV) systems to continually maximize the PV array output power, which strongly depends on both solar radiation and cell temperature. The PV power oscillations around the maximum power point (MPP) resulting from the conventional methods and complexity of the non-conventional ones are convincing reasons to look for novel MPPT methods. This paper deals with simple Genetic Algorithms (GAs) based MPPT method in order to improve the convergence, rapidity, and accuracy of the PV system. The proposed method can also efficiently track the global MPP, which is very useful for partial shading. At first, a review of the algorithm is given, followed with many test examples; then, a comparison by means Matlab/Simulink© (R2009b) is conducted between the proposed MPPT and, the popular Perturb and Observe (PO) and Incremental Conductance (IC) techniques. The results show clearly the superiority of the proposed controller. Indeed, with the proposed algorithm, oscillations around the MPP are dramatically minimized, a better stability is observed and increase in the output power efficiency is obtained. All these results are experimentally validated by a test bench developed at LIAS laboratory (Poitiers University, Poitiers, France) using real PV panels and a PV emulator which allows one to define a profile insolation model. In addition, the proposed method permits one to perform the test of linearity between the optimal current I mp (current at maximum power) and the short-circuit current I sc , and between the optimal voltage V mp and open-circuit voltage V oc , so the current and voltage factors can be easily obtained with our algorithm.

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“…V mp = M V ·V oc (3) where M c and M V are constants. Using a pilot cell, one can measure I sc and V oc and find the MPP.…”

Section: The Linear Methodsmentioning

confidence: 99%

“…The conventional methods are widely used (such as Perturb and Observe (PO) [2,3], Incremental Conductance (IC) [4,5]) because they are simple and easy to implement. But, both the PO and IC methods result in oscillation of power around the MPP because the perturbation remains even when the system operates at MPP.…”

Section: Introductionmentioning

confidence: 99%

Real-Time Genetic Algorithms-Based MPPT: Study and Comparison (Theoretical an Experimental) with Conventional Methods

2018

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“…In order to track the PV maximum power point, several strategies have been proposed. The most diffused applications use the Perturb and Observe technique [5], where the setting of perturbation step can also be adaptive [6], and Incremental Conductance [7]. Several low level control algorithms have been proposed in tandem with such control strategies [8,9].…”

Section: Introductionmentioning

confidence: 99%

Control and Modulation Techniques for a Centralized PV Generation System Grid Connected via an Interleaved Inverter

et al. 2016

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Abstract:In the context of grid connected photovoitaic (PV) generation systems, there are two paramount aspects regarding the Maximum Power Point Tracking (MPPT) of the photovoltaic units and the continuity of the service. The most diffused MPPT algorithms are based on either perturb and observe, or on an incremental conductance approach and need both PV current and voltage measurements. Several topology reconfigurable converters are also associated with the PV plants, guaranteeing fault-tolerant features. The generation continuity can also be assured by interleaved inverters, which keep the system operating at reduced maximum power in case of failure. In this paper, an evolution of a hysteresis based MPPT algorithm is presented, based on the measurement of only one voltage, together with a novel space vector modulation suitable for a two-channel three-phase grid connected interleaved inverter. The proposed MMPT algorithm and modulation technique are tested by means of several numerical analyses on a PV generation system of about 200 kW maximum power. The results testify the validity of the proposed strategies, showing good performance, even during a fault occurrence and in the presence of deep shading conditions.

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“…This auxiliary power has to be injected into the direct current (DC) power supply system in order to obtain an annual output power payback, energy conservation, and emissions reduction [14,15]. Moreover, Becherif et al [16] presented the concept of an embarked power source using SCs that were charged by means of a combination of a roof-placed PV source and an aero generator, which supplied power to the DC link of the main traction drive.…”

Section: Introductionmentioning

confidence: 99%

Integration of Photovoltaic Plants and Supercapacitors in Tramway Power Systems

2018

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Abstract:The growing interest in the use of energy storage systems to improve the performance of tramways has prompted the development of control techniques and optimal storage devices, displacement, and sizing to obtain the maximum profit and reduce the total installation cost. Recently, the rapid diffusion of renewable energy generation from photovoltaic panels has also created a large interest in coupling renewable energy and storage units. This study analyzed the integration of a photovoltaic power plant, supercapacitor energy storage system, and railway power system. Random optimization was used to verify the feasibility of this integration in a real tramway electric system operating in the city of Naples, and the benefits and total cost of this integration were evaluated.

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Optimized Adaptive Perturb and Observe Maximum Power Point Tracking Control for Photovoltaic Generation

Cited by 60 publications

References 28 publications

Real-Time Genetic Algorithms-Based MPPT: Study and Comparison (Theoretical an Experimental) with Conventional Methods

Real-Time Genetic Algorithms-Based MPPT: Study and Comparison (Theoretical an Experimental) with Conventional Methods

Control and Modulation Techniques for a Centralized PV Generation System Grid Connected via an Interleaved Inverter

Integration of Photovoltaic Plants and Supercapacitors in Tramway Power Systems

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