Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 27 for “"i-v Curve"”.
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Photovoltaic Emulator Adaptable to Irradiance, Temperature and Panel Specific I-V Curves
… The emulator calculates a current-voltage (I-V) curve based on the user specified parameters of panel model, irradiance and temperature. When a load change occurs, the power supply changes its current and voltage to track the calculated I-V curve, so as to mimic a solar panel. Over 250 different …
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Collaborative solar powered neighborhoods
… reflectors. We designed and built a set of I-V curve measurement instruments to allow us to collect separate I-V curve measurements from the difference faces of the experimental houses. We found that placing solar panels on the east and west facing roofs and walls of houses expands the power …
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Photovoltaic cell efficiency at elevated temperatures
… G solar simulator at 973 W/m2 we took the I-V curve of each of the three cells at increasing temperatures. We used the I-V curve to find the maximum power and determine the efficiency of each cell with respect to temperature. We found that the CIS cell had an efficiency of 10% and the …
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Analysis of transport properties in a zaz graphene nanoribbon junction using various dopants
… and its transport properties were analyzed. I-V curves, calculated by nonequilibrium Greens function method combined with the density functional theory under external bias, showed varying semiconducting characteristics. Further, the width of the junction also showed significant effects in the …
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Phase coherence in the regime of bilayer exciton condensation
… revealed a critical behavior and an I/V curve reminiscent of the Josephson effect of superconductivity.
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Solar Energy Conversion and Control Using Organic Photovoltaic Cells
… characteristics such as the cell’s I-V curve and efficiency information. The total system that is simulated consists of three elements: a universal two-cell solar array that can account for partial shading and manufacturing variation, a current-controlled power converter, and an energy …
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Electrical characterizations of lithium niobate thin films in a metal-ferroelectric-semiconductor capacitor
… polarization density vs. electric field (P-E) curve shows that the remnant polarization is 16.85muC/cm2 and the coercive field is 117.25 KV/cm when maximum applied field is 286.2KV/cm for a sinusoidal input waveform. The capacitance vs. voltage bias (C-V) curve further demonstrates that the …
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Quantitative photoluminescence studies in a-Si:H/c-Si solar cells
… Voc. Finally, the differences between a PL-I-V-curve and the I-V-characteristics from a-Si:H/c-Si solar cells are analyzed.
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Low frequency charge-density wave dynamics
… describe some of the fluctuations in the I-V curve. Noise measurements performed with an ac drive current characterized the fluctuations and showed that other parameters, in addition to the threshold, must be fluctuating to fully account for the fluctuations. In mesoscopic samples, the …
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Steady-State Poisson-Nernst-Planck Systems: Asymptotic expansions and applications to ion channels
… of the ions in the channel, called the I-V curve. In this thesis, we will discuss the matched asymptotic expansions method of solving a singularly perturbed system and apply this method to find an approximate solution to the steady-state Poisson-Nernst-Planck system. In general, for …
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Accurate performance measurement of silicon solar cells
… intensity while rapidly sweeping out the I-V curve of the cell. This method has two disadvantages – it requires a flash that is specially engineered to produce constant light output, and the rapid change in cell bias-voltage causes transient errors. The new approach developed in this work …
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Accurate performance measurement of silicon solar cells
… intensity while rapidly sweeping out the I-V curve of the cell. This method has two disadvantages – it requires a flash that is specially engineered to produce constant light output, and the rapid change in cell bias-voltage causes transient errors. The new approach developed in this work …
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The Development of Tunnel Diode Oscillators And High Magnetic Field Studies of Unconventional Superconductor UTe2: Unveiling the Phase Diagram And Unconventional Hall Effect
… to inductance changes due to the negative I-V curve regime of the tunnel diode, is harnessed to create a measurement circuit compatible with low-temperature refrigerators. The design and development process of these devices are thoroughly detailed. The second part unveils the comprehensive (H, …
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Analysis of the peak power of a photovoltaic array system under outdoor conditions at Vuwani Region of Limpopo Province
… to this, for the testing purposes the DS I-V curve tracer was used to take the electrical current and voltage (I-V) curves of the photovoltaic array installed for normal mode as well as the disturbed mode .The peak power data of the PV system over a period of ten months of operation is …
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The assessment of the impact causuarina cunninghamiana miq. (river-she-oak) windbreak on macadamia trees orchards in Limpopo Province, South Africa
… to this, for the testing purposes the DS I-V curve tracer was used to take the electrical current and voltage (I-V) curves of the photovoltaic array installed for normal mode as well as the disturbed mode .The peak power data of the PV system over a period of ten months of operation is …
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Design and Fabrication of Nanofluidic Systems with Integrated Sensing Electrodes for Rapid Biomolecule Characterization
… The sensing electrodes were used to perform I-V curve measurements of fluids with different electrical conductivities in the nanochannel. As a proof of concept for biomolecule characterization, negatively-charged nanobeads (20-nm yellow-green FluoSpheres®) were translocated through the …
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Electronics for a Versatile and Robust Retarding Potential Analyzer for Nano-Satellite Platforms
… a function of current vs. voltage called an I-V curve. Traditionally, the size and power requirements of retarding potential analyzers has limited their use to larger satellites. In this thesis, the electrical design and basic testing of a retarding potential analyzer for use on resource- limited …
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Predictive Modeling for Assessing the Reliability of Bypass Diodes in Photovoltaic Modules
… and method for calculating the module I-V curve under any shading scenario is presented. Frameworks for estimating the diode temperature in field deployed modules based on Typical Meteorological Year (TMY) data are developed. Model for predicting the susceptibility of bypass diodes for …
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NON-TRACKED MIRROR-AUGMENTED PHOTOVOLTAIC DESIGN AND PERFORMANCE
… field test results. The current-voltage (I-V) curve tracing of test modules was performed with a Daystar Multi-tracer for time series analysis. Over a three-month period of study the fixed MAPV system produced 10% more power than an equivalent non-augmented panel. An adjustable mounting system …
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Planar Packaging and Electrical Characterization of High Temperature SiC Power Electronic Devices
… for solving the breakdown issue. The forward I-V curve of the planar packaging using direct bond showed excellent results due to the excellent electrical and thermal properties of sintered nanosilver. The packaging using a bump bond as an improved structure was processed and proved to possess …
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