الفهرس 
Distributed generation
Photovoltaic systemOnly 14 pages are availabe for public view
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Abstract
With power system rebuilding, consistent development of demand, and deregulation, little and scattered generators alluded to as distributed generation are anticipated to assume a key part in the power distribution system. Distributed Generation Systems (DGS) may be connected directly to the grid or can be stand-alone systems.
The objective of this proposed research is to tackle some of the challenges associated with distributed generation systems connected to the grid. Significant increase of distributed generation systems is mentioned for example, photovoltaic arrays, wind power turbines and fuel stacks with deploying different energy storage systems due to their advantages for environmental regulations, cost benefits and reliability design. This includes firstly the study of power electronics systems interfaced with different distributed generation sources connected to the grid. It’s relied upon to have the abilities of voltage / frequency regulation, support fault ride through to keep up stable operation and to maintain them connected to the grid under different disturbances. Hence, it is important to outline and develop efficient and reliable control methodologies for each of photovoltaic system, fuel stack system and wind energy conversion system. Operation and control of the different distributed generation sources connected to the grid utilizing nonlinear control methods for example, (sliding mode control, artificial neural and particle swarm optimization) focus on the modeling, the control algorithm for overall system strength. Secondly, providing the methods of non-linear control of the overall modeling of the grid connected distributed generation systems.
Finally, develop control of AC/DC micro grid system through different power electronics interfacing with capability of operation under grid mode. This thesis will explain the control procedures for three-phase, two-stage PV system, that is more difficult in analysis and control than other methods.
With the expanded level of penetration of wind power to the power grid, it has gotten to be important to address problems associated with the reliability, the stability and the security of the power system. Basic requirements for the wind farm are dynamic voltage stability and low voltage ride through ability in many countries and Egypt. Wind energy conversion systems based on DFIG ought to have the ability to proceed continuous power supply under every voltage disturbances and respect the needs of grid code.
The continuous development and application of energy storage systems are considered significant issues for the distributed generation and the future smart grid. Their capability to store energy has changed the traditional power system’s definition. Proton Exchange Membrane Fuel Cell (PEMFC) and super capacitor were discussed and modeled.
This thesis proposes a novel hybrid centralized and distributed control of a complete renewable hybrid AC-DC micro grids. This configuration has higher efficiency, where the conversion losses are decreased and minimized, this because different loads type are connected directly to their own AC or DC buses.