International Journal of Computer and Applications

http://ieeexplore.ieee.org/iel5/5610941/5624686/05624745.pdf

Power electronics

This paper provides a comprehensive review of the maximum power point tracking (MPPT) techniques applied to photovoltaic (PV) power system available until January, 2012. A good number of publications report on different MPPT techniques for a PV system together with implementation. But, confusion lies while selecting a MPPT as every technique has its own merits and demerits. Hence, a proper review of these techniques is essential. Unfortunately, very few attempts have been made in this regard, excepting two latest reviews on MPPT [Salas, 2006], [Esram and Chapman, 2007]. Since, MPPT is an essential part of a PV system, extensive research has been revealed in recent years in this field and many new techniques have been reported to the list since then. In this paper, a detailed description and then classification of the MPPT techniques have made based on features, such as number of control variables involved, types of control strategies employed, types of circuitry used suitably for PV system and practical/commercial applications. This paper is intended to serve as a convenient reference for future MPPT users in PV systems.

A Comparative Study on Maximum Power Point Tracking Techniques for Photovoltaic Power Systems

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Power Electronics Converters Applications And Design

This paper presents a review on the state-of-the-art maximum power point tracking (MPPT) techniques for PV power system applications. The main techniques that will be deliberated are the Perturb and Observe, Incremental Conductance and Hill Climbing. The coverage will also encompass their variations and adaptive forms. In addition, the more recent MPPT approaches using soft computing methods such as Fuzzy Logic Control, Artificial Neural Network and Evolutionary Algorithms are included. Whilst the paper provides as thorough treatment of MPPT at normal (uniform) insolation, its focus will be on the applications of the abovementioned techniques during partial shading conditions. It is envisaged that this review work will be a source of valuable information for PV professionals to keep abreast with the latest progress in this area, as well as for new researchers to get started on MPPT.

A review of maximum power point tracking techniques of PV system for uniform insolation and partial shading condition

The aim of this paper is to investigate the effects of partial shading on energy output of different Solar Photovoltaic Array (SPVA) configurations and to mitigate the losses faced in Solar Photovoltaic (SPV) systems by incorporating bypass diodes. Owing to the practical difficulty of conducting experiments on varied array sizes, a generalized MATLAB M-code has been developed for any required array size, configuration, shading patterns, and number of bypass diodes. The proposed model which also includes the insolation-dependent shunt resistance can provide sufficient degree of precision without increasing the computational effort. All the configurations have been analyzed and comparative study is made for different random shading patterns to determine the configuration less susceptible to power losses under partial shading. Inferences have been drawn by testing several shading scenarios.

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A Comprehensive Review and Analysis of Solar Photovoltaic Array Configurations under Partial Shaded Conditions

The output of solar photovoltaic (SPV) system depends on various factors like bypass diode configuration, array size, array configuration, shade intensity, etc. besides the environmental conditions. Further, partial shaded conditions increase the mismatch losses and reduce the output of the photovoltaic (PV) array significantly. The size of the PV array is to be increased under such circumstances to meet the desired specifications. This, in turn, increases the return of investment period that makes power generation by PV systems less attractive. This paper focuses on the various techniques that could negate the impact of partial shading and enhance the output under such conditions. In order to improve the power extraction under partial shaded conditions, various solutions modifying either the power processing architecture or the PV generator architecture have already been proposed. This paper reviews the latter approach and proposes a static architecture to negate the impact of partial shading and enhance the energy yield under non-uniform irradiation conditions.

Reconfiguration strategies to extract maximum power from photovoltaic array under partially shaded conditions

Maximum power point tracking of partially shaded solar PV system using modified Fibonacci search method with fuzzy controller

Solar energy is a green energy which is not only perennial but also accessible to every strata of the world. An easy way to convert solar energy into electric energy is to use Solar Photovoltaic (SPV) system. Solar panel is a power source having nonlinear internal resistance. As the intensity of light falling on the panel varies, its voltage as well as its internal resistance varies. To extract maximum power from the panel, the load resistance should be equal to the internal resistance of the panel. For this purpose maximum power point trackers (MPPT) are used. This paper proposes a new MPPT controller. The proposed MPPT controller is based on genetic algorithm (GA) optimized artificial neural network (ANN). For the simulation purpose an improved model of SPV is used. The MPPT is simulated and studied using MATLAB software.

Maximum power point tracking using GA-optimized artificial neural network for Solar PV system

Circuit model of photovoltaic (PV) module is presented in this paper that can be used as a common platform by material scientists and power electronic circuit designers to develop better PV power plant. Detailed modeling procedure for the circuit model with numerical dimensions is presented using power system blockset of MATLAB/Simulink. The developed model is integrated with DC-DC boost converter with closed-loop control of maximum power point tracking (MPPT) algorithm. Simulation results are validated with the experimental setup.

https://downloads.hindawi.com/journals/ijp/2012/410401.pdf

R. Ramaprabha

Papers

A Comprehensive Review and Analysis of Solar Photovoltaic Array Configurations under Partial Shaded Conditions

Reconfiguration strategies to extract maximum power from photovoltaic array under partially shaded conditions

Maximum power point tracking of partially shaded solar PV system using modified Fibonacci search method with fuzzy controller

Maximum power point tracking using GA-optimized artificial neural network for Solar PV system

Application of Circuit Model for Photovoltaic Energy Conversion System