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 29 for “"Renewable Energy System"”.
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Increasing renewable energy system value through storage
Intermittent renewable energy sources do not always provide power at times of greatest electricity demand or highest prices. To do so reliably, energy storage is likely required. However, no single energy storage technology is dominant when comparing cost intensities of the energy capacity and …
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Data driven artificial intelligence techniques in renewable energy system
… is composed of different kinds of distributed energy resources (DER) such as solar panels, wind farms, batteries and power transformers. DERs often come with data interfaces and IoT sensors which generate large amounts of data. Besides monitoring device status, those data can be utilized to …
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High Efficiency Single-stage Grid-tied PV Inverter for Renewable Energy System
… and decrease the peak of Q, which help the system be controlled easier and more stable. Thus, interleaved multiple phases structure is proposed to have small equivalent inductance, meanwhile the ripple can be decreased, and the inductor size can be reduced as well. A two-phase interleaved …
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Modeling and simulation of standalone hybrid PV-wind renewable energy system base case study: Iraq
Energy is very important for countries growth and economy. The global warning of using fossil fuel to generate electricity increase which plays an important role to increase the demand for renewable energy to generate electricity. Renewable energy is the energy that collected from renewable sources …
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Factors Affecting the Optimal Sizing of Generators and Storage in Stand-Alone Hybrid Renewable Energy System
… is a need to provide low cost electric power systems in a number of locations around the world. However, the size and cost of renewable energy generators and storage increase when they are used alone, due to the stochastic nature of sources. Reliability similar to the grid power supply can …
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Development of an ambient temperature alkaline electrolyser for integrating with the electrical grid and renewable energy system
… alkaline electrolyser is considered a promising energy storage technology that integrates renewable energy sources such as wind, solar, wave and tidal energy with the electrical grid. Hydrogen energy systems consisting of conventional temperature (at 80°C) alkaline electrolysers have been widely …
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An Investigation into the Contribution of Hybrid Renewable Energy System to Utility Grid in the Regions with Arid Climate
… the future concern of the world carbon-based energy and economy, particularly, developing countries that heavily dependent on Oil, such as the Kingdom of Saudi Arabia (KSA) which is the case study of this research. It has a power sector which is heavily reliant on fossil fuels. The fuel types …
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Renewable Energy and the Smart Grid: Architecture Modelling, Communication Technologies and Electric Vehicles Integration
Renewable Energy is considered as an effective solution for relieving the energy crisis and reducing the greenhouse gas emissions. It is also be recognized as an important energy resource for power supplying in the next generation power grid{smart grid system. For a long time, the unsustainable and …
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Modelling a hybrid system pv/wind grid connected with static synchronous compensator (STATCOM)
… power grid is enhanced. But this combined hybrid system needs controlling and Compensation, to overcome this problem, we use Static x Synchronous Compensator (STATCOM) to stabilize the power supply at the grid side after many disturbances via Voltage Sag, load changes, Distortion etc. This thesis …
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Improving Inverter Efficiency at Low Power Using a Reduced Switching Frequency
The inverter is a major component of a renewable energy system and its performance affects the overall performance of the system. For typical household applications in rural areas, often there is need to operate at low power conditions where inverter efficiency can drop dramatically. Efficient …
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Relationship Between Wind and Solar Electrical Energy Potential in the Texas Hill Country: A Study at the Texas State Freeman Ranch Center
… to environmental concerns creating a need for renewable energy sources. The purpose of this study is to analyze metrological data collected at the Freeman Ranch Center to determine if there is the potential for wind energy to supplement solar energy, creating more consistent and reliable energy …
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Integrated Tandem Dye Sensitized Solar Cell (DSSC)-Lithium Ion Battery
<p>Efficient renewable energy harvesting and storage are needed for present challenges related to clean environment and increasing energy demand. Different types of energy harvesting technologies such as solar, thermal and wind require excess energy to be stored in batteries, which further adds to …
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Implementations of electric vehicle system based on solar energy in Singapore assessment of solar thermal technologies
To build an electric car plus renewable energy system for Singapore, solar thermal technologies were investigated in this report in the hope to find a suitable "green" energy source for this small island country. Among all existing solar thermal technologies, parabolic trough power plants represent …
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A Parallel-Series Two Bridge DC/DC Converter for PV Power Conditioning Systems Used in Hybrid Renewable Energy Systems
… The intended application is power 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 …
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The role of concentrating solar power in a South African large scale renewable energy scenario
… thesis investigates a hypothetical large scale renewable energy system for South Africa over the long term future using 2050 as a nominal year of analysis. Simulation modeling was used to assess the integration of three renewable energy technologies, which are currently being installed at …
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Feasibility Study of Sustainable Energy to Power Wastewater Treatment Plants for Islands
… and public health. Wastewater treatment is very energy intensive as it involves operation of large motors, drives, pumps and other equipment on a 24 hour-a-day basis. Improving quality of sewage treatment to produce more environmentally safe effluent requires more energy. Conventional energy …
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Structural fatigue assessment and optimisation of offshore wind turbine jacket foundations.
… Wind Turbine (OWT) is an expensive type of renewable energy system, and there is a continuous effort to lower the capital and operational costs. Jacket foundations are increasingly used in offshore wind due to their relatively light weight and adaptability in deep waters. However, the …
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Energy efficiency's role in a zero energy building: simulating energy efficient upgrades in a residential test home to reduce energy consumption
… have realized that meeting these ever-growing energy demands could potentially devastate the environment. In the United States, generating electrical power constitutes the largest source of carbon dioxide emissions and the majority of this power is used to electrify buildings both in the …
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A comparative analysis and optimisation of thermo-mechanical energy storage technologies
Electrical Energy Storage (EES) can decouple energy production from its consumption and is urgently needed by both conventional energy system for load leveling and renewable energy system for intermittency smoothing. Currently, Pumped Hydro Energy Storage (PHES) and Compressed Air Energy Storage …
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Decision aiding in off-grid electrification projects: the role of uncertainty acknowledgement and objectives alignment
… decision process is quantified for two examples: renewable energy system sizing, where an adequacy confidence index is proposed, and renewable energy resource estimation, where the accuracy and applicability of RETScreen and Homer within a South African climatic context are analysed. Finally, the …
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