الفهرس 
IntroductionOnly 14 pages are availabe for public view
 |  | from | 268 |  |  |
| | | from | 268 | | |
Abstract
The overall objective of photovoltaic and wind energy system is to obtain
electricity from the sun and wind that are cost competitive and even advantageous
with respect to other energy sources. Design of photovoltaic Wind Energy System
Hybrid Electric Power System (PV/WES HEPS) has many issues if we take all
economical and technical parameters into account. This thesis presents a complete
design and simulation of a PV/WES HEPS to be interconnected with utility grid,
UG.
The proposed design of PV/WES HEPS is based on energy balance, minimum
price of generated kilo watt hour (kWh), maximum power point tracking for PV
and WES by using an artificial intelligence technique. In this thesis, novel
computer programs are proposed to design a Photovoltaic system, wind energy
system and PV/WES HEPS.
These novel computer programs determine hourly system parameters such as
optimum solar cells area, optimum number of inverter unit, total number of
modules /subsystem, total number of parallel panel /string, total number of series
module/panel , total number of modules, total number of WTGs, price of kWh (
ECF) produced form PV system and WES and reliability of the system. This thesis
presents also a possible circuit topology and controller design for a grid-connected
DC-AC power converter. In this thesis we present a study, describe a control
strategy for interconnection of hybrid system with electric utility accompanied
with or without battery storage using artificial intelligence techniques and also a
fuzzy logic technique to calculate and assess the reliability index for each HEPS
configuration under study.
The computer programs can be applied to any site of the world. The development
proposed package has been applied to Zafarâna site, Egypt as a case study. The
thesis contains eight chapters which are summarized as follows:
IV
Chapter 1 presents the role and important need of renewable energies for todays
and future, especially PV and wind energies. It presents also an introduction for
renewable energies and previous work in the filed of the thesis.
Chapter 2 introduces a proposed computer program for optimal design of a PV
system to be interconnected with UG at M.P.P using neural network. It presents
also methodologies for calculating the hourly solar radiation on tilted surfaces and
design of each component of PV system.
Chapter 3 presents an application of an artificial neural network on the strategy of
the operation control of the PV/UG to improve system efficiency and reliability. It
introduces also a complete computer simulation program of PV system
interconnected with UG.
Chapter 4 introduces a proposed computer program for optimal design of a WES
to be interconnected with UG at M. P. P using neural network. It presents also a
complete methodology to obtain an optimum design of WES interconnected with
UG to supply a load at any site in the world.
Chapter 5 introduces an application of an artificial neural network on the operation
control of the WES/UG to improve system efficiency and reliability. It
presents also a computer modeling, simulation, analysis of a variable speed WTG
interconnected with UG. The computer simulation program is confirmed on a
realistic circuit model which implemented in the Simulink environment of Matlab
and works as if on line.
Chapter 6 introduces a proposed computer program for optimal design of a PV
system, WES and PV/WES HEPS to be interconnected with UG to feed a load
demand at any site in the world. It presents an application of an artificial neural
network (ANN) on the operation control and interconnection of the PV/WES
interconnected with UG. Also it introduces a computer modeling, simulation,
analysis of a HEPS interconnected with UG.