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.
Results
Showing 1 to 20 of 30 for “"PV array"”.
-
Improvement of the Operating Efficiency and Initial Costs of a Utility-Scale Photovoltaic Array through Voltage Clamping
The utility-scale PV array systems must be designed to operate normally at maximum power point VMPP, but must also withstand the very high voltage level of open-circuit voltage VOC which seldom occur in reality operation, if they are shut down or otherwise power grid unable to receive the full …
-
Multi-Phase Smart Converter for PV System
… the advantages of cascaded smart converter PV system over traditional centralized and string PV system. However, even by adopting the cascaded smart converter, it is not always possible to track maximum power point (MPP) for all the panels under heavy shading condition, and a central …
-
A Parallel-Series Two Bridge DC/DC Converter for PV Power Conditioning Systems Used in Hybrid Renewable Energy Systems
… conditioning systems (PCS) of photovoltaic (PV) arrays used in hybrid renewable energy system architectures. The proposed topology provides two degrees of freedom which allows the PV-PCS to regulate the DC-link voltage, while tracking the maximum power point (MPP) of the PV array. This …
-
Modeling and multi-objective optimization of a photovoltaic-thermal based multigeneration system
… and optimized. It consists of GaAs based PV (Photo-Voltaic) arrays connected in series. Light is being concentrated on those arrays using lenses or mirrors. Concentrated light increases the cell temperature significantly. The cell is cooled down using a heat transfer fluid. This heat is …
-
Optimization of Small Grid-tied and Off-grid PV Systems with Energy Management
… for the integration of photovoltaics (PV) into the grid. As a result there is need to better understand how to optimize grid tied PV systems in no-net metering situations using load management, considering current technology and tariffs. The objectives of this research were to optimize …
-
Model-based optimisation approaches for system energy performance improvement and evaluation
… the number of voltage sensors in photovoltaic (PV) fault diagnosis, improve PV maximum power generation through rearranging PV modules, and also measure and verify energy savings.;For this purpose, three objectives are set in this study: i) To summarise existing model-based optimisation …
-
Enhanced Cal Poly SuPER System Simulink Model
… system. This model includes a photovoltaic (PV) array, a lead-acid gel battery with temperature effects, a wind turbine model, a re-designed DC-DC converter, a DC microgrid, and multiple loads. This thesis will also include several control algorithms such as a temperature controlled …
-
Degradation-Induced Mismatch Losses and Their Mitigation in Utility-Scale PV Systems
… tracking (MPPT) in utility-scale photovoltaic (PV) power plants is essential to maximise energy harvesting from all PV modules. In conventional systems, a central MPPT (CMPPT) is typically used to track the global maximum power point (GMPP) of the PV array. However, when the electrical …
-
SEARCHING FOR THE FACTOR OF SAFETY: A STUDY OF WOOD ROOF SYSTEM CAPACITY AS IT APPLIES TO SOLAR PHOTOVOLTAIC INSTALLATION
… to carry the additional load of a photovoltaic (PV) array. This research seeks to address how the addition of PV installations can affect the structural capacity of residential wood roof systems and to investigate the current methods in which roof systems are assigned their working strengths. …
-
Improving the Maximum Power Point Tracking Efficiency of Photovoltaic Arrays via Machine Learning and Deep Learning
… 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 …
-
Asynchronous differential power processing for true maximum power point tracking of photovoltaic sub-modules
… power point tracking (MPPT) at the photovoltaic (PV) sub-module level, but in the context of large arrays. Central communication carries large overheads, and neighbor-to-neighbor communication can have long propagation times in large arrays, so a communication-less solution was explored. An MPPT …
-
Evaluation of two prototype three phase photovoltaic water pumping systems
… photovoltaic pump systems (Solvo, ML T) and a DC PV pump (Miltek) were tested on a farm borehole in Namibia (latitude 21°6', longitude 17°6'). The PV array consisted of twelve modules (636Wpeak) mounted on a single-axis passive tracker. The depth of the water was 75m and a progressive cavity pump …
-
Maximizing efficiency of solar energy harvesting systems supplying a microgrid using an embedded system
… the high initial capital cost of photovoltaic (PV) panels and their low conversion efficiency, it is imperative to operate the PV system at its maximum power point (MPP). In this context, the goal in this thesis is to develop and improve the PV system, by contributing to the optimization of …
-
Cal Poly SuPER System Photovoltaic Array Universal DC-DC Step Down Converter
… to the converters. However, a photovoltaic (PV) array has the I-V characteristics of a current source not a voltage source. This thesis details the design process of modifying the standard Buck and synchronous Buck converter topologies to function with either a voltage or current source …
-
Offshore floating solar with compressed air storage as a baseload power plant for a data center
… each comprising a 5×5 photovoltaic (PV) array mounted above a matrix of submerged compressed air storage cylinders anchored below the floating platform, addressing the energy resilience and spatial constraints of coastal computing infrastructure. This scalable configuration enables …
-
Transactive control of electric railway networks
… within 1% after just 3 iterations for a single PV array and one train and within 4 iterations for two PV arrays and two trains.
-
Control and operation of SMES and SMES/PV systems
… compensation for fluctuations in photovoltaic (PV) power generation are the primary applications discussed. It is demonstrated that a SMES system implemented with standard AC/DC converters offers energy storage capacity large enough, and dynamic response fast enough, to compensate for PV …
-
Dynamic Aggregation of Grid-tied Inverters
… model is extended for photovoltaic (PV) inverters, where a PV array, a maximum power point tracking (MPPT) algorithm, and a dc-link capacitor are incorporated into the three-phase inverter model. Furthermore, a network-cognizant aggregation approach for distribution networks …
-
Modular Photovoltaic (PV) Step-up Converter With A Coupled Power Balancing Scheme for DC-Distributed System
… increasing exponentially, with photovoltaic (PV) energy having 25% growth rates along with a continual decrease in cost. A high-power PV energy conversion system typically consists of a medium voltage (MV) grid that collects power from individual PV arrays. In a MV Direct Current (DC) …
-
Technoeconomic Assessment of a Gossamer, Planar, Gigawatt-Scale Space-Based Solar Power System
… based on two metrics: the net present value (NPV) and the levelized cost of electricity (LCOE). Although SBSP is deemed practical from an engineering perspective, the study concludes that it has yet to make financial sense. Its technical practicality is evidenced by the fact that all the …
Page 1 of 2