International Journal of Engineering Research

H. A. Mohamed ¹

Affiliations
1 Electrical Power and Machines Department, Division of Media Engineering, International Academy for Engineering & Media Science, Six of October City, Giza, EG

Abstract

The electrical system Photovoltaic (PV) modules are powered by solar arrays requires special design considerations due to varying nature of the solar power generated resulting from unpredictable and sudden changes in weather conditions which change the solar irradiation level as well as the cell operating temperature. This paper, a mathematical model of a PV cell used matlab-simulink environment, is developed and presented. The model is developed using basic circuit equations of the photovoltaic solar cells including the effects of solar irradiation and temperature changes. The main objective is to evaluate the output crystalline silicon PV voltage at different ambient temperatures.

Keywords

Photovoltaic, Crystalline Silicon, Cell Operating Temperature, Matlab-Simulink, Output Voltage.

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H. A. Mohamed ¹, Maged N. F. Nashed ²

Affiliations
1 Electrical Power and Machines Department, Division of Media Engineering, International Academy for Engineering & Media Science, Six of October City, Giza, EG
2 Dept. of Power Electronic and Energy Conversion, Electronics Research Institute, Cairo, EG

Abstract

Due to rapidly aging electric transmission power and distribution infrastructure, increased demand for energy, awareness of climate change and greenhouse gas pollution, and increased cost of fuel there is a need to produce and deliver energy more efficiently power. This paper attempts to provide a solution to these constraints through advancements in DC power architectures. The simulation study of PI controller for boost converter are presented in a stand alone photovoltaic energy scheme. Moreover the simulation for a DC motor is presented in photovoltaic generator. The complete system consists of an array of solar panels, a boost converter with PI and DC shunt motor with Fuzzy Logic controller (FLC)-as a voltage regulator. The Fuzzy Logic Controller is designed to deal with the system nonlinearity and its associated uncertainty. DC-DC converters are used to convert the unregulated DC input into a regulated DC output at desired voltage level. The duty cycle (D) of the converter is adjusted to obtain a constant level of voltage or a variable voltage rout in case of voltage regulator or maximum power respectively.

Keywords

PV, Boost Converter, DC Shunt Motor, PI and FL Controller.

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H. A. Mohamed ¹

Affiliations
1 Electrical Power and Machines Department, Division of Media Engineering, International Academy for Engineering & Media Science, Six of October City, Giza, EG

Abstract

In power quality, harmonics problems are worse than transient events, such as lighting or voltage sags. The harmonics problems could get worse if more than one nonlinear load were connected on a system. Therefore, such distortion should be avoided to protect the power system source and the electrical devises. In this article a new technique was developed to estimate the total harmonic distortion for a system that has multiple nonlinear loads without performing detailed interconnected system analysis. This technique was successfully utilized on Matlab. The technique gives acceptable results.

Keywords

Harmonics, Total Harmonic Distortion, Nonlinear Loads, Matlab/Simulink.

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