M. Jamiati
Abstract
This paper presents a model of solar cell by using MATLAB SIMULINK. P-V, I-V and P-I characteristics were studied for various values of irradiance at constant temperature. Genetic Algorithm (GA) was used for maximum power point tracking (MPPT) of Photovoltaic (PV) system using the direct control method. ...
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This paper presents a model of solar cell by using MATLAB SIMULINK. P-V, I-V and P-I characteristics were studied for various values of irradiance at constant temperature. Genetic Algorithm (GA) was used for maximum power point tracking (MPPT) of Photovoltaic (PV) system using the direct control method. The main objective of this paper is to find out the optimal angle, which is used for the positional control of solar module and optimal power tracking. The principle of GAs is searching for the maximum of fitness function and not for the minimum of power derivation; this gives more stability and minimize oscillation of output power around the maximum power point (MPP). The main contribution of the proposed scheme is the elimination of PI control loop which normally exists to manipulate the duty cycle. Simulation results indicate that the proposed controller outperforms the others method for all type of environmental conditions.
A. M. Mahmoud; S. M. Saafan; A. M. Attalla; H. Elgohary
Abstract
The photovoltaic (PV) Power generation is the best source of renewable energy due to advantages such as free fuel cost, cleanness, little maintenance, and causing no noise due to absence of moving parts. Egyptian government moves towards encourage consumers to generate electricity from PV array and issues ...
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The photovoltaic (PV) Power generation is the best source of renewable energy due to advantages such as free fuel cost, cleanness, little maintenance, and causing no noise due to absence of moving parts. Egyptian government moves towards encourage consumers to generate electricity from PV array and issues new electricity law that allow consumers to sell the surplus of the generated power of PV to utility. Partial shading is one of the obstacles of the propagation of the electricity generation by PV array. Partial shading may be occurs due to clouds, trees and neighbor building. This paper propose a new method for optimization of power of a rooftop photovoltaic (PV) array connected to grid under partial shading. This work provides a comparative literature review on methods to mitigate these effects and the drawbacks of this method. This paper represent the components of the interconnection between the rooftop PV array and the grid. The Maximum power point (MPP) achieved by perturb and observe technique which control the duty cycle of the buckboost converter. The proposed technique increased the output power of the PV and output efficiency during the partial shading condition.