Hybrid renewable energy generation systems for eco-friendly buildings in Qatar.

To meet Qatar National Vision 2030, this research aims integrating renewable energy sources (RES) into large educational, industrial and commercial buildings in Qatar while making them energy efficient. The proposed hybrid energy system (HES) is investigated using the Texas A&M Engineering building in Qatar as the case-study. Proposed solution main components are: 1) Installing Photovoltaic panels (RES) on the roof of building. 2) Utilizing the flow of waste washing water and collected rain water in power generation. 3) Employing energy storage as a balancing mechanism, and to act as an uninterruptable power supply (UPS) during power shortages. 4) Providing the needed load dispatch criteria by control and optimization

An effective Model Predictive Control for grid connected Packed U Cells multilevel inverter

This paper presents a Model Predictive Control (MPC) for grid-tied Packed U Cells (PUC) multilevel inverter. The system under study consists of a single-phase 3-cell PUC inverter connected to the grid through filtering inductor. The proposed topology allows the generation of 7-level output voltage with reduction of passive and active components compared to the conventional multilevel inverters. The aim of the proposed MPC technique is to achieve grid-tied current injection, low Total Harmonic Distortion (THD) of the current, unity power factor, while balancing the capacitor voltages at maximum power point (MPP). The feasibility of this strategy is validated by simulation using Matlab/Simulink environment. 2016 IEEE.Scopu