الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
Recently, renewable energy sources have become excellent alternative of energy for future demand and to mitigate environment pollution problems. Grid connected renewable energy sources, such as Wind Turbines (WT) and photovoltaic panel (PV) systems, utilize power electronic converters as interfacing devices between renewable energy sources and utility grid. These converters are commonly based on a Voltage Source Inverter (VSI) connected to the supply network, and operated to achieve different objectives such as active and reactive power flow regulation and management for hybrid micro-grid applications using Maximum Power Point Tracking (MPPT). However, intermittent nature of renewable energy resources must be controlled to meet the grid requirements. The grid requirements include independent control of active and reactive power, improved power quality and good transient response during fault conditions, etc. This thesis introduces a simple digital power control technique for a single phase grid-ties voltage source inverter (VSI). The proposed technique is based on discretized equations in (α-β) stationary reference frame. Thereby, no need for synchronous (d-q) transformation. In this technique, the control of active and reactive power is based on dead-beat control algorithm, with robust performance to achieve nearly zero steady state error. Maximum Power Tracking (MPT) algorithm using Incremental Conductance (InC) technique has been proposed and validated for both PV and wind turbine sources to ensure effective management of available renewable powers. The thesis discusses the overall system model and architecture, that is utilize within Matlab/Simulink for simulation analysis, under different conditions. The obtained results confirm the validation of the proposed control algorithm for different modes of operation for domestic applications and power management of hybrid micro-grid applications. The thesis also introduces analytical and experimental study for filter and gate drive requirements for the grid-connected inverter, which is the main core of the proposed setup. The results of the experimental work and the simulation results are compared and showed good agreement which prove the effectiveness of the proposed algorithm.