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 16 of 16 for “"partial shading"”.
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Design a photovoltaic system based on maximum power point tracking under partial shading
… affected by the level of radiation, heat and partial shading condition. The partial shedding condition is one of vectors that can affect the PV cell performance. To overcome on this problem, this project proposes photovoltaic system based on maximum power point tracking of partial shading …
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Analysis and techniques of partial shading detection and classification in solar photovoltaic arrays
Partial shading in solar photovoltaic (PV) modules typically reduces the output current of the shaded PV module due to the reduction in the irradiance level. Although this phenomenon is temporary in nature, it is considered an intermittent fault, and it is essential for a protection system to …
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Performance of maximum power point tracking by using conventional and soft computing techniques during partial shading conditions
… of MPPT techniques for the PV system during partial shading conditions (PSC), where 25% and 50% shaded weather profile applied to the system. The system also subjected to a non-shaded real weather profile to examine the proposed MPPTs performance under changing weather conditions. The …
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Quality and Yield Responses of Seven Warm Season Forage Grasses to Partial Shading in a Simulated Silvopasture in East Texas
… season native grasses, grown under simulated partial shading (50%) typical of a loblolly pine silvopastoral system in East Texas. In order to meet the overall objective, slatted shade structures were constructed that simulated the quantity, quality, and overall light regime found beneath …
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New Three Phase Photovoltaic Energy Harvesting System for Generation of Balanced Voltages in Presence of Partial Shading, Module Mismatch, and Unequal Maximum Power Points
… power peaks within multi-local peaks in case of partially shaded PV module conditions. Next, it proposes an adaptive MPP tracking (MPPT) strategy based on the concept of model predictive control (MPC) in conjunction with a new current sensor-less approach to reduce the number of required sensors …
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Modular multilevel converters for solar photovoltaic - battery energy storage system integration
PV systems have intermittency and partial shading challenges which endanger the stability and reliability of electric grids. Due to their scalable and modular structure, modular multilevel converters (MMC) are suitable for grid integration of PV and battery energy storage system (BESS). This thesis …
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Solar Energy Generation Forecasting and Power Output Optimization of Utility Scale Solar Field
… method is particularly designed to address partial shading issues often encountered in PV system installed on distorted ground. The MATLAB-based model was validated using the data collected from the Cal Poly Gold Tree Solar Field. It was able to predict the system performance with 96.4 to …
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Solar Energy Conversion and Control Using Organic Photovoltaic Cells
… two-cell solar array that can account for partial shading and manufacturing variation, a current-controlled power converter, and an energy storage device with charging and discharging capabilities.</p>
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Implementation and control of distributed maximum power point tracking in solar photovoltaic applications
… output under mismatched conditions (e.g. due to partial shading) across the system. Three centrally controlled dc-dc buck converters with series connected outputs are implemented and tested. As the maximum power point (MPP) of panel sections may vary, the proposed multiphase converters operate …
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Design and control of photovoltaic systems in distributed generation
… increase photovoltaic system performance during partially shaded operation. Also, a new mathematical model is derived to represent the behaviour of the photovoltaic system characteristic under partial shading conditions. A single-phase single-stage current source inverter based photovoltaic …
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Improving the Maximum Power Point Tracking Efficiency of Photovoltaic Arrays via Machine Learning and Deep Learning
<p>Under partial shading conditions, photovoltaic (PV) modules in a solar array experience varying irradiance. A Global Maximum (GM) and multiple Local Maximums (LMs) can originate on the Power-Voltage (P-V) curve under nonuniform irradiance conditions. There are many maximum power point tracking …
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Modelling and Tracking of the Global Maximum Power Point in Shaded Solar PV Systems Using Computational Intelligence
… under different weather conditions including partial shading. The Particle Swarm and Firefly algorithm performed relatively the same and were chosen to be the best under all test conditions as they were the most efficient and were able to track the global maximum power point under partial …
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Architectures and circuits for low-voltage energy conversion and applications in renewable energy and power management
… to a 35% increase in panel output power during partial shading conditions compared to current state-of-the-art solutions.
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Technology Agnostic Analysis and Design for Improved Performance, Variability, and Reliability in Thin Film Photovoltaics
… the features of TFPV module reliability under partial shading using this circuit simulation, and propose a geometrical design solution for shade tolerant TFPV modules.</p> <p>The most important theme of this thesis is to establish that TFPV technologies share many universal performance, …
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Deep Reinforcement Learning-Based Approaches for the MPPT Control of Standalone Solar PV Systems
… like buildings, clouds, trees, etc., can produce shading on the series-connected solar panel, thus, changing how each panel behaves. This phenomenon is known as solar PV “partial shading conditions (PSCs)”. This phenomenon can create “one global MPP (GMPP) and multiple local MPPs (LMPPs)” on the …
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Photovoltaic Source Simulators for Solar Power Conditioning Systems: Design Optimization, Modeling, and Control
… the system allows for the creation of the partial shading effect on PV characteristic. This dissertation investigates the dynamic performance of commercial and non-commercial solar power conditioning systems using the proposed simulator in steady-state and transient conditions. Closed-loop …