Modification of the Incremental Conductance Algorithm in Grid Connected Photovoltaic Systems (original) (raw)
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2018
Today, the consumption and deployment of conservative energy, & environmental pollution caused due of it is increasing with the modernization of world. To minimize the pressure on conventional energy source it's the need to have more concerned about looking alternative sources for power generation. Solar can play important role as an alternative energy being a renewable energy source. Among the renewable resources, photovoltaic panels and wind- generators are primary contenders. The gain of Photovoltaic (PV) is that it has very small conversion efficiency, less maintenance & causes no pollution. The expenditure of solar system utilizing photovoltaic (PV) cells can be reduced by using efficient power system which is designed to extort the greatest probable power from the photovoltaic module using sun tracking and maximum peak-power point track (MPPT) technique. In sun tracking technique PV panel is oriented according to sun within a day to generate a highest possible power from i...
In this paper incremental conductance (INC) technique is used to track the Maximum Power Point (MPPT) for PV system. To produce maximum power in effective cost during demand of power, the terminal voltage of a solar array is always adjustable with a converter and MPPT controller. To achieve the objective and improve the performance, a boost converter is used in the system. The Solar PV system observes the different situation like irradiance and temperature. In this paper MATLAB/Simulink is used to model PV system. INTRODUCTION Now a days there is vast growth in the field of both grid connected and off grid PV system. Mainly a grid connected PV system consists of solar panels, inverter, boost converter and some equipment for grid connection. PV system using are ranges from small commercial rooftop to large utility scale solar power generation station. The grid connected PV supplies excessive power beyond consumption by the connected load to the utility grid. The PV model is designed and modeled using simulation. The MPPT controls the duty cycle using that PWM method of converter which is required to achieve the regulation of the PV terminals to get max power at all situation and some type of auto track in the system that revolve the PV module to get the sunlight directly.
Energy Procedia, 2014
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.
Implementation of Incremental Conductance (MPPT) Technique for PV System
International journal of scientific research in science, engineering and technology, 2014
This project investigates in detail the concept of Maximum Power Point Tracking (MPPT) which significantly increases the efficiency of the solar photovoltaic system. The project proposes a simple MPPT algorithm is called Incremental conductance Method. This method computes the maximum power and controls directly the extracted power from the PV. The proposed method offers different advantages which are: good tracking efficiency, response is high and well control for the extracted power. The resultant system is capable of tracking MPPs accurately and rapidly without steady-state oscillation, and also, its dynamic performance is satisfactory. First the photovoltaic module is analyzed using SIMULINK software. The main aim will be to track the maximum power point of the photovoltaic module so that the maximum possible power can be extracted from the photovoltaic. For the main aim of the project Maximum Power Point Tracking control mechanism is used. Modeling the converter and the solar c...
Maximum Power Point Tracking for Photovoltaic Using Incremental Conductance Method
Solar energy is a potential energy source in Indonesia.A photovoltaic is needed to harvest this kind of energy, and to be able to gather the most, the PV must have a good efficiency. The maximum efficiency is achieved when PV works at its maximum power point which depends on irradiation and temperature. Since the irradiation and temperature always change with time, a PV system which able to track the maximum power point needs to be developed to produce more energy. This research was aimed to explore the performance of a maximum power point tracking system which implements Incremental Conductance (IC) method. The IC algorithm was designed to control the duty cycle of Buck Boost converter and to ensure the MPPT work at its maximum efficiency. The system performance of IC algorithm was compared to widely used algorithm - Perturb and Observe (P&O) on a Simulink environment. From the simulation, the IC method shows a better performance and also has a lower oscillation.
These in this work, we simulate a photovoltaic (PV) array to obtain maximum power point (MPP) of the system. We used an incremental conductance (IC) algorithm to track MPP. We gave a detailed explanation of IC tracking system algorithm. In addition, we used MATLAB simulation results. Simulation results show the accuracy of the results since we obtained output power equals 200.13 W. We expected 200.143 W. Also, we did not get any oscillation around the output value. Thus we recommend IC for fast and accurate results.
Smart Grid and Renewable Energy, 2022
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. Keywords Modeling, Simulation, PV System, Maximum Power Point Tracking (MPPT), Incremental Conductance Algorithm, MATLAB/Simulink
In this paper, a fuzzy logic control (FLC) idea is used to control the maximum power point tracking (MPPT) for a photovoltaic system by incremental conductance method. MPPT technology, various diode model, effect of variation of solar irradiance and cell temperature, performances Incremental Conductance method is a cheap and easy algorithm to implement for Maximum Power Point Tracking (MPPT). This method is based on the advantage of an Incremental Conductance of a PV array to determine an optimum operating current for the maximum output power. This work proposes on the Investigation of Incremental Conductance method based Maximum Power Point tracking for photovoltaic system, to have the advantage of low frequency switching and proposes a simple algorithm for Photovoltaic system.
Incremental Conductance Based Maximum Power Point Tracking (MPPT) for Photovoltaic System
Photovoltaic (PV) energy is the most important energy resource since it is clean, pollution free, and inexhaustible. 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 method is based on use of a Incremental conductance of the PV to determine an optimum operating current for the maximum output power.
Analysis and Design of Modified Incremental Conductance-Based MPPT Algorithm for Photovoltaic System
Journal of Renewable Energies
This study discusses the design of the Maximum Power Point Tracking (MPPT) technique for photovoltaic (PV) systems employing a modified incremental conductance (IncCond) algorithm to extract maximum power from a PV module. A PV module, a DC-DC converter, and a resistive load constitute the PV system. In the scientific literature, it is well-documented that typical MPPT algorithms have significant drawbacks, such as fluctuations around the MPP and poor tracking during a sudden change in atmospheric conditions. To solve the deficiencies of conventional methodology, a novel modified IncCond method is proposed in this study. The simulation results demonstrate that the updated IncCond algorithm presented allows for less oscillation around the maximum power point (MPP), a rapid dynamic response, and superior performance.