الفهرس 
Chapter 1: INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
The increase demand of electrical energy due to the industrial development
and world population has made the traditional energy resources entered the
age of insufficiency. Recently, an increase attention has been given to the
renewable energy sources, especially photovoltaic (PV) energy systems as
an alternative energy resource available everywhere in Egypt and offer
substantial advantages over conventional power resources such as
reliability, low maintenance cost, no fuel cost, reduced sound pollution,
safety and high performance. All PV modules provided in markets gives 12
or 24V (2 up to 5 A) but load requirements need higher voltages so boost converter is needed. DC-DC boost converter is inserted between the source
and the load as power conditioning unit to regulate and boost up photovoltaic voltage to desired output voltage. Also, batteries are a desired
Energy storage to incorporate with PV power systems to meet the load
demand at night. So, in this thesis, the complete power system consists of a
module of PV cells, a DC/DC boost converter, load (resistive or dc motor)
and lead acid battery has been done using MATLAB/SIMULINK. Also, a
laboratory model of boost converter is designed, implemented and tested
for operation and the experimental results are obtained. Open loop
simulation results are compared with the experimental results to verify the
effectiveness of the simulated model. The model is simulated with constant
dc input and with disturbance at the input voltage. Finally, closed loop
control for boost converter is presented to automatically attain and keep the desired output voltage by comparing it with the actual voltage.
Proportional-integral (PI), fuzzy logic controller (FLC), Hybrid Proportional-Integral Fuzzy Logic Controller (HPIFLC) and Proportionalintegral-
derivative (PID) are designed and implemented to control the duty cycle of DC/DC boost converter. Performance comparison between different controllers (PI, FL, HPIFLC and PID ) have been carried out which emphasize that HPIFLC and, PID are superior to other controllers as settling time, overshoot and steady state error are reduced for different duty cycles.