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Full-Text Articles in Engineering
Comprehensive Optimization Models For Voltage Regulation In Pv-Rich Multi-Phase Distribution Systems, Ibrahim Alsaleh
Comprehensive Optimization Models For Voltage Regulation In Pv-Rich Multi-Phase Distribution Systems, Ibrahim Alsaleh
USF Tampa Graduate Theses and Dissertations
The distribution systems are increasingly challenged by the continued prevalence of distributed energy resources (DERs), signaling the need for new computational tools to systemize their involvement, coordinate their operation with existing control devices, and mitigate undesired actuation of expensive equipment. Co-optimized operation of the various control devices becomes possible with the advancement in the power system optimization algorithms and the increased deployment of advanced metering infrastructure, offering system awareness and two-way communication. The steady-state alternating-current optimal power flow (ACOPF) problem, being the most descriptive form of OPF, lies at the root of power system optimization, aiming to minimize an operating …
Distributed Coordination And Control Of Renewable Energy Sources In Microgrids, Javad Khazaei Khazaei
Distributed Coordination And Control Of Renewable Energy Sources In Microgrids, Javad Khazaei Khazaei
USF Tampa Graduate Theses and Dissertations
Microgrid is an emerging technology in the eld of electrical engineering which employs the concept of Distributed Energy Resources (DERs) in order to generate electricity in a small sized power system. The main objectives of this dissertation are to: 1- design a new control for lower level control of DERs in microgrids, 2- implement distributed upper level control for DERs in microgrids and 3- apply analytical approaches in order to analyze DERs in microgrids. The control in each DER can be divided into two main categories: lower and upper level. Lower level control is the main objective of control in …
Fabrication Of Cu2Znsnse4 Thin-Film Solar Cells By A Two-Stage Process, Yejiao Wang
Fabrication Of Cu2Znsnse4 Thin-Film Solar Cells By A Two-Stage Process, Yejiao Wang
USF Tampa Graduate Theses and Dissertations
Copper zinc tin selenide (Cu2ZnSnSe4 or CZTSe) is a quaternary compound semiconductor material that has attained more and more attention for thin film photovoltaic applications. CZTSe is only comprised of abundant and non-toxic elements. People have concerns about availability and cost of indium from CIGS and tellurium from CdTe, also about cadmium’s toxicity. These concerns have promoted CZTSe as an alternative thin film solar cell material. The major issues about CZTSe absorber fabrication are: tin loss during selenization process and existence of secondary phases. Recent improvements of CZTSe absorber have increased the efficiency of CZTSe thin film …