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Improving the incremental conductance algorithm for two-stage grid-connected photovoltaic systems

TURKISH JOURNAL OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCES 2018年第1期26卷 442-453页

作者： Ozcelik, Megmet Ali Yilmaz, Ahmet Serder Gaziantep Univ Vocat Sch Tech Sci Dept Elect & Energy Gaziantep Turkey Kahramanmaras Sutcu Imam Univ Dept Elect & Elect Engn Fac Engn Kahramanmaras Turkey

Efficiency of solar photovoltaic generation plants depends not only on internal operational conditions but also on external atmospheric conditions. Total efficiency is influenced by various weather conditions such as cloudiness, temperature, and irradiation. In order to generate maximum energy, photovoltaic (PV) arrays should be operated at their maximum power point (MPP), varying external factors like partial shading and surface temperature and amount of radiation coming from the sun. In modern PV systems, maximum power point trackers (MPPTs) have been used in order to reach the MPP, changing with the factors given above. MPPT units are implemented to control DC-DC converters that are connected to terminals of PV arrays. MPPTs operate according to some algorithms to reach the maximum power level in various conditions. This study presents a new modification of the incremental conductance (IncCond) algorithm, one of the best-known algorithms, to improve total efficiency of solar energy conversion systems. The proposed modified algorithm is able to catch the new MPP quickly compared to the conventional type and oscillations are also decreased, reaching a new operating point.

关键词： DC-DC converters incremental conductance algorithm maximum power point tracker photovoltaic systems

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An improved MPPT control strategy based on incremental conductance algorithm

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Protection and Control of Modern Power Systems 2020年第1期5卷 176-183页

作者： Liqun Shang Hangchen Guo Weiwei Zhu School of Electrical and Control Engineering Xi’an University of Science and TechnologyXi’an 710054Shaanxi ProvinceChina

PV power production is highly dependent on environmental and weather conditions,such as solar irradiance and ambient *** of the single control condition and any change in the external environment,the first step response of the converter duty cycle of the traditional MPPT incremental conductance algorithm is not accurate,resulting in *** improve the efficiency and economy of PV systems,an improved incremental conductance algorithm of MPPT control strategy is *** the traditional incremental conductance algorithm,this algorithm is simple in structure and can discriminate the instantaneous increment of current,voltage and power when the external environment changes,and so can improve tracking *** simulations are carried out under rapidly changing solar radiation level,and the results of the improved and conventional incremental conductance algorithm are *** results show that the proposed algorithm can effectively identify the misjudgment and avoid its *** not only optimizes the system,but also improves the efficiency,response speed and tracking efficiency of the PV system,thus ensuring the stable operation of the power grid.

关键词： Photovoltaic array MPPT Phenomenon of misjudgment incremental conductance algorithm

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A Modified incremental conductance algorithm for Partially Shaded PV Array

A Modified Incremental Conductance Algorithm for Partially S...

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IEEE International Conference on Technological Advancements in Power and Energy (IEEE TAP Energy) - Exploring Energy Solutions for an Intelligent Power Grid

作者： Lakshmi, D. Rashmi, M. R. Amrita Vishwa Vidyapeetham Amrita Sch Engn Dept Elect & Elect Engn Bengaluru India

ISBN: (纸本)9781538640210

For a partially shaded PV array there will be several peaks in the Maximum Power Point (MPP) characteristics. The conventional incremental conductance (INC) algorithm cannot extract global maximum power point during shading. Therefore the INC algorithm is slightly modified to extract global maximum point during worst atmospheric conditions. Hybrid Cuk converter performance is better compared to Cuk and boost converters. The algorithm is experiment on Hybrid Cuk converter. This paper presents the performance of Cuk converter by applying modified INC algorithm to generate the switching pulses to extract maximum power when the panel is partially shaded. The results of the modified algorithm are compared with basic incremental conductance algorithm.

关键词： Maximum Power Point Tracking (MPPT) incremental conductance algorithm partially shaded PV array Global Maximum Power Point

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Maximum Power Point Tracking Using the incremental conductance algorithm for PV Systems Operating in Rapidly Changing Environmental Conditions

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Smart Grid and Renewable Energy 2022年第5期13卷 89-108页

作者： Derek Ajesam Asoh Brice Damien Noumsi Edwin Nyuysever Mbinkar Laboratoire de Génie Electrique Mécatronique et Traitement du Signal ENSPY University of Yaounde I Yaounde Cameroon Department of Electrical/Electronic Engineering NAHPI University of Bamenda Bamenda Cameroon Higher Technical Teacher Training College (HTTTC) University of Bamenda Bamenda Cameroon Department of Electrical/Electronics Engineering Nigeria Army College of Environmental Studies and Technology (NACEST) Makurdi Nigeria

Maximum Power Point Tracking (MPPT) is an important process in Photovoltaic (PV) systems because of the need to extract maximum power from PV panels used in these systems. Without the ability to track and have PV panels operate at its maximum power point (MPP) entails power losses;resulting in high cost since more panels will be required to provide specified energy needs. To achieve high efficiency and low cost, MPPT has therefore become an imperative in PV systems. In this study, an MPP tracker is modeled using the IC algorithm and its behavior under rapidly changing environmental conditions of temperature and irradiation levels is investigated. This algorithm, based on knowledge of the variation of the conductance of PV cells and the operating point with respect to the voltage and current of the panel calculates the slope of the power characteristics to determine the MPP as the peak of the curve. A simple circuit model of the DC-DC boost converter connected to a PV panel is used in the simulation;and the output of the boost converter is fed through a 3-phase inverter to an electricity grid. The model was simulated and tested using MATLAB/Simulink. Simulation results show the effectiveness of the IC algorithm for tracking the MPP in PV systems operating under rapidly changing temperatures and irradiations with a settling time of 2 seconds.

关键词： Modeling Simulation PV System Maximum Power Point Tracking (MPPT) incremental conductance algorithm MATLAB/Simulink

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New Approach of incremental conductance algorithm for Maximum Power Point Tracking Based on Fuzzy Logic

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INTERNATIONAL JOURNAL OF GRID AND DISTRIBUTED COMPUTING 2016年第7期9卷 121-132页

作者： Othmani, Hichem Mezghani, Dhafer Belaid, Ahmed Mami, Abdelkader Univ Tunis El Manar Fac Sci Tunis Dept Phys Univ Campus Farhat Hached Tunis 1068 Tunisia

Tracking the maximum power point is an appropriate solution against climatic changes like the irradiance and temperature. The classic incremental conductance algorithm is one of the most widely used methods in commercial photovoltaic MPPT's (Maximum Power Point Tracking). A wide variation of climatic condition can degrade the produced energy. In this work we present our new approach based on fuzzy logic which can guarantee better performance. The studied system used to prove the efficiency of the proposed method is composed by a photovoltaic panel Kaneka K60 connected to a Sepic Converter which fed a resistive load. The All results quoted in this work are found using MATLAB-Simulink. We put the system in different working condition to highlight our new approach. All presented results are discussed.

关键词： Photovoltaic Panel Sepic converter MPPT incremental conductance algorithm fuzzy logic

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Analysis of PV Module with Buck-Boost and Zeta Converters with incremental conductance Maximum Power Point Tracking Method

Analysis of PV Module with Buck-Boost and Zeta Converters wi...

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International Conference On Smart Technologies For Smart Nation (SmartTechCon)

作者： Chaurasia, Manoj Kumar Gidwani, Lata Rajasthan Tech Univ Dept Elect Engn Kota Rajasthan India

ISBN: (纸本)9781538605691

This paper represents the mathematical modelling of the photovoltaic module. Current and Power with voltage characteristics shows that the relationship is not linear. It is integrated with Buck-Boost and Zeta converters considering environmental temperature and irradiance variations. In the finding of maximum power point, the incremental conductance algorithm is a very popular method which can track rapidly changing maximum power point. The quality of output voltage depends on which type of converter used. Output voltage ripples are shallow in Zeta converter comparing to the Buck - boost converter. Simulation is performed on MATLAB/Simulink.

关键词： Zeta Converter Buck-Boost Converter incremental conductance algorithm

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An Investigation of incremental conductance based Maximum Power Point Tracking for Photovoltaic System

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Energy Procedia 2014年 54卷 11-20页

作者： Kante Visweswara Assistant Professor EEE Department Kuppam Engineering College Kuppam- 517425 Chittoor District Andhra Pradesh State INDIA

Photovoltaic (PV) energy is the most important energy resource since it is clean, pollution free, and inexhaustible. The output power of PV arrays is always changing with weather conditions, i.e., solar irradiation and atmospheric temperature. Therefore, a MPPT control to extract maximum power from the PV arrays at real time becomes indispensable in PV generation system. In recent years, a large number of techniques have been proposed for tracking the maximum power point (MPP). Maximum power point tracking (MPPT) is used in photovoltaic (PV) systems to maximize the photovoltaic array output power, irrespective of the temperature and radiation conditions and of the load electrical characteristics the PV array output power is used to directly control the dc/dc converter, thus reducing the complexity of the system. The resulting system has high-efficiency; lower-cost this paper proposes a maximum-PowerPoint tracking (MPPT) method with a simple algorithm for photovoltaic (PV) power generation systems. The method is based on use of an incremental conductance of the PV to determine an optimum operating current for the maximum output power. This work proposes on Investigation of incremental conductance Based maximum Power Point Tracking for Photovoltaic System, to have the advantages of low frequency switching.

关键词： Photovoltaic System Modelling of PV Arrays incremental conductance algorithm Boost Converter

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Dual-function PV-ECS integrated to 3P4W distribution grid using 3M-PLL control for active power transfer and power quality improvement

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IET RENEWABLE POWER GENERATION 2018年第8期12卷 920-927页

作者： Agarwal, Rahul Kumar Hussain, Ikhlaq Singh, Bhim IIT Delhi Dept Elect Engn New Delhi 110016 India

This study proposes a single-stage solar photovoltaic energy conversion system (PV-ECS) integrated to a three-phase four-wire (3P4W) distribution grid with dual-function capabilities, i.e. active power transfer and power quality (PQ) enhancement at the point of interaction (PoI). The PV-ECS system comprises of a solar photovoltaic array and a voltage source inverter (VSI), supplying active power (during daytime) to the distribution grid and connected single-phase and three-phase loads. Apart from transfer of power, the system also improves the PQ at the PoI by compensating reactive power and neutral current, attenuating harmonics, correcting power factor and balancing grid currents. During night, the VSI acts as a shunt active power filter mitigating PQ issues, thereby increasing the device utilisation factor. A three-phase magnitude-phase locked loop (3M-PLL) method is utilised to extract and estimate fundamental term of load currents and an incremental conductance algorithm is applied for maximum power point tracking. To demonstrate its effectiveness, the system is modelled and its performance is simulated on MATLAB and experiments are performed on a developed prototype in the laboratory.

关键词： solar power stations photovoltaic power systems phase locked loops maximum power point trackers inductive power transmission power supply quality power grids voltage-source convertors invertors solar cell arrays power generation control active filters power harmonic filters reactive power power factor correction distributed power generation dual-function PV-ECS system 3P4W distribution grid 3M-PLL control active power transfer power quality improvement single-stage solar photovoltaic energy conversion system three-phase four-wire distribution grid power quality PQ enhancement point of interaction PoI solar photovoltaic array voltage source inverter VSI active power three-phase loads connected single-phase load neutral current reactive power compensation harmonics attenuation shunt active power filter grid currents device utilisation factor three-phase magnitude-phase locked loop method incremental conductance algorithm maximum power point tracking Matlab power factor correction

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MPPT Design for PV-Powered WPT System with Irregular Pulse Density Modulation

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ELECTRIC POWER COMPONENTS AND SYSTEMS 2023年第1期51卷 83-91页

作者： Unal, Kenan Bal, Gungor Oncu, Selim Ozturk, Nihat Gazi Univ Motor Vehicle & Transportat Technol Ankara Turkey Istanbul Topkapi Univ Elect & Elect Engn Istanbul Turkey Karabuk Univ Elect & Elect Engn Karabuk Turkey Gazi Univ Elect & Elect Engn Ankara Turkey

Electric vehicles (EVs) are well-known as environmentally friendly systems. Therefore, the demand for EVs is rapidly increasing every day, but for charging batteries of EVs eco-friendly electrical energy sources are needed. To use a clean energy source, this article proposes a wireless power transfer (WPT) system energized by photovoltaic panels. In this study, pulse density modulation technique controlled with incremental conductance algorithm is preferred in the WPT system for both transferring power from primary to secondary windings and for tracking maximum power point (MPP). The proposed system was tested with an experimental prototype and the results were presented. As a result, both 99.22% MPPT efficiency was obtained and power was transferred from primary to secondary with 90% efficiency.

关键词： wireless power transfer pulse density modulation maximum power point tracking incremental conductance algorithm

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Design of a robust sliding mode controller for MPPT based on automation PLC for PV applications

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INTERNATIONAL TRANSACTIONS ON ELECTRICAL ENERGY SYSTEMS 2020年第4期30卷 1-19页

作者： Ouberri, Youness Yatimi, Hanane Aroudam, Elhassan Abdelmalek Essaadi Univ Dept Phys Fac Sci Modeling & Simulat Mech Syst Team Tetouan Morocco ENSIT Engn Sch Syst Control & Decis Lab Tangier Morocco

This paper presents a novel automated design of the photovoltaic maximum power point tracking (MPPT), based on the robust sliding mode control, using the automation programmable logic controller (PLC) software. The aim is to maintain the photovoltaic system operating at its maximum by continuously tracking the maximum power point, with considerable oscillation reduction to overcome the drawbacks usually witnessed with standard MPPT algorithms using automation PLC. The studied system is modeled and simulated using the Siemens automation software (TIA portal), and an empirical implementation is implemented using the Siemens S7-1200 PLC as a controller. To validate the robustness of the proposed sliding mode control, the system outcomes under variant meteorological conditions using both the sliding mode controller and the well-known incremental conductance algorithm are compared. The results reveal that the sliding mode control provides smooth and precise MPPT that far exceeds the incremental conductance performance.

关键词： automation PLC human machine Interface (HMI) incremental conductance algorithm maximum power point tracking photovoltaic system renewable energy sliding mode control

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