الفهرس 
Chapter 1 IntroductionOnly 14 pages are availabe for public view
 |  | from | 144 |  |  |
| | | from | 144 | | |
Abstract
Solar photovoltaic and wind turbine power are considered very promising sources for electric power generation. PV/wind power conditioning system is used to enhance the power output of renewable energy source, regulate electrical power to effectively charge batteries, draw maximum power from the solar panels, and provide a high quality AC output for stand-alone and grid connected systems.
This thesis presents a hybrid PV/ wind/ diesel and battery system which used for supplying a combined pumping and residential load rated 100 kW. A simple cost-effective method for sizing stand-alone PV hybrid systems was introduced. This requires assessing the climate conditions in Sohag area which determine the temporal variation of the insolation and wind speed in Sohag city (place of study). Sizing of the hybrid system components was investigated using HOMER and RETscreen programs. A comparison of efficiency and cost to electric load with change energy source is conducted using the mentioned software. The optimal design is selected to determine the components of the proposed system for the continuation of the flow of electrical energy with the least economic cost and high reliability.
This thesis presents also a hybrid PV/wind/ diesel/battery system to feed load on renewable energy sources using DC/AC converter. A transformer is used to step up or step down of the voltage required to feed the hybrid system. The PV and wind are the primary power sources of the system, and a battery bank and diesel engine is used as a backup storage system. An overall energy management optimal storage strategy is designed for the system to manage power flows among the different energy sources and the storage unit in the system. A microgrid system simulation model is developed using MATLAB/Simulink to validate the proposed system.