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Full-Text Articles in Engineering
Maximum Power Point Tracking Device For A Photovoltaic Panel, Betsy Schwartz
Maximum Power Point Tracking Device For A Photovoltaic Panel, Betsy Schwartz
Honors Theses
The operating characteristics of a photovoltaic (PV) solar panel are dependent upon the lighting and temperature conditions, as well as the characteristics of the energy storage device and/or loads that it feeds. PV panels normally operate at a fixed voltage and current for a given load and sunlight condition. The operating conditions will not necessarily produce the maximum possible power output of a solar panel for the set conditions. The efficiency of power delivery from a PV panel can be greatly increased by a Maximum Power Point Tracker (MPPT). An algorithm can be designed to shift the operating value to …
Off Grid Solar Powered Street Light, Justin Fang, Billy Pham
Off Grid Solar Powered Street Light, Justin Fang, Billy Pham
Electrical Engineering
Street lights are fixtures found in every city and serve the important purpose of illuminating the streets and keeping the roads safe for pedestrians and drivers. Current street lights are powered by the grid, power which is paid for by the taxpayers and could have been used to power homes instead. With this project, our goal is to design and implement an electric power system that collects and stores solar energy, and delivers power to an LED smart street light. The resulting system would reduce street light energy costs by 100% since they would not draw any power from the …
Impact Of Photovoltaic System Penetration On The Operation Of Voltage Regulator Equipment, Abesh Sorab Mubaraki
Impact Of Photovoltaic System Penetration On The Operation Of Voltage Regulator Equipment, Abesh Sorab Mubaraki
Master's Theses
The growing popularity of photovoltaic (PV) generation systems leads to an increase in the number of residential and commercial grid-tied PV systems that interconnect to the distribution circuit. This affects the characteristics of the distribution circuit; for example, the assumption that the voltage profile of a radial line decreases down-stream becomes invalid because of the addition of the PV system on the line. This poses new challenges when setting the parameters of voltage regulating devices. Add to that the fact that PV systems are intermittent, especially on cloudy days, which make the line even more difficult to regulate, and the …
Time Domain Simulation Of Novel Photovoltaic Materials, Haejun Chung
Time Domain Simulation Of Novel Photovoltaic Materials, Haejun Chung
Open Access Theses
Thin-film silicon-based solar cells have operated far from the Shockley- Queisser limit in all experiments to date. Novel light-trapping structures, however, may help address this limitation. Finite-difference time domain simulation methods offer the potential to accurately determine the light-trapping potential of arbitrary dielectric structures, but suffer from materials modeling problems. In this thesis, existing dispersion models for novel photovoltaic materials will be reviewed, and a novel dispersion model, known as the quadratic complex rational function (QCRF), will be proposed. It has the advantage of accurately fitting experimental semiconductor dielectric values over a wide bandwidth in a numerically stable fashion. Applying …
Copper Indium Diselenide Nanowire Arrays In Alumina Membranes Deposited On Molybdenum And Other Back Contact Substrates, Bhavananda R. Nadimpally
Copper Indium Diselenide Nanowire Arrays In Alumina Membranes Deposited On Molybdenum And Other Back Contact Substrates, Bhavananda R. Nadimpally
Theses and Dissertations--Electrical and Computer Engineering
Heterojunctions of CuInSe2 (CIS) nanowires with cadmium sulfide (CdS) were fabricated demonstrating for the first time, vertically aligned nanowires of CIS in the conventional Mo/CIS/CdS stack. These devices were studied for their material and electrical characteristics to provide a better understanding of the transport phenomena governing the operation of heterojunctions involving CIS nanowires. Removal of several key bottlenecks was crucial in achieving this. For example, it was found that to fabricate alumina membranes on molybdenum substrates, a thin interlayer of tungsten had to be inserted. A qualitative model was proposed to explain the difficulty in fabricating anodized aluminum oxide …