Combination of Novel Converter Topology and Improved MPPT Algorithm for Harnessing Maximum Power from Grid Connected Solar PV Systems (original) (raw)
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A Novel Approach on MPPT Algorithm for Solar Panel using Buck Boost Converter
— According to maximum power transfer theorem, a solar module will be unable to transfer maximum power to the load by itself due to an impedance mismatch that occurs in the system. A maximum power point tracking (MPPT) system should be employed to extract the maximum power. Micro controller is used to control the output of the converter. Photo-voltaic (PV) module output power is measured using sensors and is sent to micro controller. The output power of the present module is compared with the previous module output power and the duty cycle of the converter is adjusted continuously to track the Maximum power. This process is repeated until the output power reaches near the maximum power point. In this project, a maximum power point tracking system is developed using buck-boost converter. Stepped Perturb and observe type of MPPT algorithm is used to transfer maximum power from the PV panel.
Performance enhancement of solar photovoltaic system using novel Maximum Power Point Tracking
The electrical power supplied by the photovoltaic (PV) array depends on insolation, temperature and load. On the other hand, the actual power produced by the PV array is not fully transferred to the load. Therefore, it is necessary to extract maximum power from PV array. Maximum Power Point Tracking (MPPT) is a power electronic system that extracts maximum power from PV system. MPPT varies the electrical operating point of the PV modules and enables them to deliver maximum available power. In this work, a new MPPT algorithm is designed that uses open circuit voltage and short circuit current, sampled from a reference PV Panel. Using these measurements the maximum power is been tracked from main panel without breaking the power transferred to load. A buck boost converter was used to match impedance between source and load to facilitate maximum power transfer. The proposed algorithm was checked for its performance in local environmental condition.
DESIGN AND ANALYSIS OF MPPT BASED BUCK BOOST CONVERTER FOR SOLAR PHOTOVOLTAIC SYSTEM
IAEME Publication, 2020
Maximum power point trackers are so important to improve the efficiency of photovoltaic systems. Many methods have been proposed to achieve the maximum power that the PV modules are capable of producing under different atmospheric conditions. This paper proposed a Perturb and Observe based Maximum Power Point Tracking (MPPT) algorithm for solar system. The solar panel is simulated and analyzed in MATLAB/SIMULINK. Photovoltaic system is connected to a DC-DC Buck-boost converter. The Solar panel can produce maximum power at a certain operating point called Maximum Power Point (MPP).To achieve maximum power and to get maximum efficiency, the whole system must operate at that Maximum Power point. Maximum power point of PV panel keeps same on changing with changing solar irradiance and temperature of cell. Then to obtain maximum power from a PV system, MPPT algorithms are implemented. So that, P & O based MPPT is developed and Simulation results show the effective of the P&O based controller to produce more stable power.
International journal of engineering research and technology, 2018
With the increasing in the energy demand conservation and utilization of energy are very essential. Hence Solar charge controller helps in increasing the efficiency of the solar power transferred to the battery. Photovoltaic modules show nonlinear output characteristics because of different system losses. Maximum power point tracking (MPPT) is an intelligent technique for reducing these losses by driving the system at its maximum operating point. DC/DC converter is an essential part of a MPPT controlled photovoltaic (PV) system which functions as an interface between PV system and the load. These Converters are mostly Dc Choppers which converts fixed Dc voltage to a variable Dc source. These Regulators are used in case of Solar Charge Controllers to increase or decrease the PV panel voltage to as that required by Battery. The DC voltage from the PV panel varies with the light intensity which depends on time of day and temperature. Similarly, on the Battery side the voltage varies depending on the load connections. Thus, for optimal charging of battery it is important that the voltage of the PV panel and the current matches the battery charging state at any instant. There are various types of Dc-Dc Converter of which Buck Boost Converter is taken into consideration. In this project work we propose an efficient photovoltaic system which will be designed, developed and the results will be validated in real time.
A New Maximum Power Point Tracking Algorithm for the Photovoltaic Power System
2019 International Conference on System Science and Engineering (ICSSE), 2019
The use of maximum power point tracking (MPPT) techniques is widely discussed and employed for photovoltaic array in micro-grid systems to optimize the PV output power transferred to the load. There are various types of converter models are employed as MPPT circuits such as buck, boost or buck-boost converters. The MPPT circuit is becoming an intermediate component between the load and the PV panel. In this paper, the MPPT boost converter is selected and a new control algorithm for the MPPT controller, namely new hill climbing method, is introduced. This method is also compared with an existing popular MPPT algorithm (P&O) to confirm its superior performance by using the MATLAB simulation.
A Technical Review of Grid Connected Solar Photovoltaic System with MPPT Techniques
International Journal for Research in Applied Science & Engineering Technology (IJRASET), 2022
The Maximum Power Point Tracking (MPPT) is a technique used in power electronic circuits to extract maximum energy from the Photovoltaic (PV) Systems. In the recent decades, photovoltaic power generation has become more important due to its many benefits such as it needs a few maintenance with environmental advantage of being fossil fuel free. However, there are two major barriers for the use of PV systems, low energy conversion efficiency and high initial cost. To improve the energy efficiency, it is important to work PV system always at its maximum power point. So far, many researches has conducted and many papers were published and suggested different methods for extracting maximum power point.
This paper develops the design aspects of DC-DC Boost Converter in solar Photovoltaic (PV) system using Maximum Power Point Tracking (MPPT) Algorithm. The amount of electric power generated by PV module is always varying with irradiation of Sun. MPPT algorithms has led to the increase in the efficiency of operation of the solar modules. By changing the duty cycle of the converter the load impedance as seen by the source is varied and matched at the point of the peak power with the source so as to transfer the maximum power.
2014 17th International Conference on Computer and Information Technology (ICCIT), 2014
ABSTRACT Photovoltaic modules show nonlinear output characteristics because of which different system loss occurs. Maximum power point tracking (MPPT) is an intelligent technique for reducing these losses by driving the system at its optimal operating point. In this paper two well established MPPT techniques: Perturb and Observe (P&O) method and Incremental conductance (INC) method is explained and verified with simulated results. Due to some drawbacks in P&O method, a comprehensive optimized photovoltaic system is designed implementing the INC method in Matlab/Simulink. DC/DC converter is an essential part of a MPPT controlled photovoltaic (PV) system which functions as an interface between PV system and load. There are many converter topologies whose are implemented according to their required applications. A detailed comparative study among buck, boost and buck-boost converters is presented here. Our study shows that among these three converters buck-boost delivers the maximum power to the load. Finally an optimized PV system implementing INC method interfaced with buck-boost converter is designed and simulated which is robust and compatible to all other techniques.
An investigation of photovoltaic system with maximum power point tracking method
Journal of emerging technologies and innovative research, 2018
Nowadays, renewable energy resources play an important role in replacing conventional fossil fuel energy resources. Photovoltaic energy is one of the very promising renewable energy resources which grew rapidly in the past few years. The variation of the operating conditions of the Photovoltaic cell array has one major problem Due to this variation, the voltage at which maximum power can be obtained, is also alter. Solar photovoltaic (PV) systems are distributed energy sources that are an environmentally friendly and renewable source of energy. The objective of this paper is to study and analyze PV systems. In this paper, a PV model is used to simulate PV arrays behavior, and then a Maximum Power Point tracking method using variable step size Perturb and observe (P & O) is proposed in order to control the non inverted buck boost DC-DC converter. Each subsystem is modeled and simulated in a Matlab/Simulink environment. Simulation results shows that the proposed variable step size Per...