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 52 for “"Hybrid Energy"”.
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Benefits of battery-uItracapacitor hybrid energy storage systems
… benefits of battery and battery-ultracapacitor hybrid energy storage systems (ESSs) in pulsed-load applications. It investigates and quantifies the benefits of the hybrid ESS over its battery-only counterparts. The metric for quantifying the benefits is charge efficiency - the amount of energy …
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Multiferroic BiFeO3 films and nanostructures for hybrid energy harvesters
… which aims to develop and integrate lead-free hybrid energy harvesters for the car industry, the following work has been focused on the deposition by metal-organic vapor phase deposition of multiferroic BiFeO3 films and nanostructures. BiFeO3 is a multiferroic material and can maintain its …
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The assessment of battery-ultracapacitor hybrid energy storage systems
Battery-ultracapacitors hybrid energy storage systems (ESS) could combine the high power density and high life cycle of ultracapacitors with the high energy density of batteries, which forms a promising energy storage system. In this thesis, an assessment of the benefits of the hybrid ESS relative …
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Variable energy pricing in stand alone community hybrid energy systems
… the demand for a more efficient and sustainable energy supply model has presented a new challenge for the energy industry. It has also created an opportunity for alternative and renewable sources of energy generation, which has led to a significant increase in the deployment of renewable …
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Modeling and control of fuel cell-battery hybrid energy sources
… and development in the area of alternative energy systems. Among various alternative energy systems, fuel cells and batteries have attracted significant attention both in academia and industry considering their superior performances and numerous advantages. In this dissertation, the modeling …
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Design of a hybrid energy-generation system for autonomous kayaks
… this research is to design and analyze a series-hybrid energy-production system for an autonomous kayak. Currently these vehicles have limited range due to energy storage in lead acid batteries. Extending the range would give the vehicles more operating time in their environments, and allow a …
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Analysis and optimal planning of nuclear-renewable hybrid energy systems for ships
… maritime vessels, and integration of Renewable Energy Sources (RESs) is one of them. Due to some limitations, RESs are not suitable for large ships and often mix with fossil fuel-based generators. Fossil fuel-based generators need to be replaced by emissions-free energy sources to make marine …
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Energy management of nuclear-renewable hybrid energy system for fast charging station
… and emissions. The application of renewable energy sources (RESs) is limited due to their intermittency problem. To address those issues, a nuclear-renewable hybrid energy system (N-R HES) is proposed in this thesis to support the load demand of a fast charging station. Key performance …
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Nuclear renewable oil shale hybrid energy systems : configuration, performance, and development pathways
… Oil Shale Systems (NROSS) are a class of large Hybrid Energy Systems in which nuclear reactors provide the primary energy used to produce shale oil from kerogen deposits and also provide flexible, dispatchable electricity to the grid. Kerogen is solid organic matter trapped in sedimentary shale, …
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Development and evaluation of Nuclear-Renewable Hybrid Energy System simulator with load following
… and optimization of Nuclear-Renewable Hybrid Energy Systems (N-RHES) with a focus on Load Following (LF) capabilities. The primary aim is to enhance the operational flexibility of nuclear reactors to adapt to dynamic power demands. A dynamic simulation tool was developed for different …
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Planning and optimization of nuclear-renewable micro hybrid energy systems for off-grid applications
… operation of medium/large scale off-grid energy systems is a key challenge for energy crisis solutions, which requires continuous and sustainable energy resources. In this context, microreactors are incorporated with renewables to provide a continuous, reliable, and sustainable energy …
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Energy Management System Modeling of DC Data Center with Hybrid Energy Sources Using Neural Network
… reliability. The continuing growth of renewable energy sources such as photovoltaics (PV) system presents an opportunity to reduce the long-term energy cost of data centers and to enhance reliability when used with utility AC power and energy storage. However, the inter-temporal and the …
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Development of a Parallel Hybrid Energy Management Strategy with Consideration of Drive Quality and State of Charge Dynamics
The development of a rule-based hybrid energy management strategy for a parallel P4 full hybrid without access to a functional prototype is presented. A simulation model is developed using component bench data and validated using EPA-reported fuel economy test data, including a proposal for …
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Signal and power integrity analysis of bidirectional DC-DC converters for hybrid energy storage systems with EMI/EMC optimization
Hybrid Energy Storage System (HESS) utilizes multiple energy storage architectures to achieve a broader range of characteristics in terms of power density, energy density and calendar life. A 500W bidirectional synchronous DC-DC converter design is implemented for the active topology of HESS. This …
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Process design, dynamics, and techno-economic analysis of a sustainable coal, wind, and small modular nuclear reactor hybrid energy system
… The push for large-scale renewable sources of energy has met problems with regards to energy storage and availability. The proposed coal, wind, and nuclear hybrid energy system would combine a renewable energy source, wind, with traditional and stable energy sources, coal and nuclear, to create …
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New and improved solutions for the configuration, management and operation of large-scale photovoltaic power plants using hybrid energy storage system
… the technological knowledge in the renewable energy (RE) field. The motivation of this study is based on the main disadvantages of photovoltaic (PV) solar power generation compared to conventional energy sources, such as intermittency, non-dispatchability, and unreliability. From those …
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Distribution system reliability improvement using distributed generators
Solar Energy is one of alternative source for rural electrification where no nearest grid connected available. However, since it is only depending on sun irradiation it only can feed customers need during day time only. Besides, a standalone solar energy cannot provide a continuous supply due to …
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Micro-Scale and Nonlinear Vibrational Energy Harvesting
This work addresses issues in energy harvesting that have plagued the potential use of harvesting through the piezoelectric effect at the MEMS scale. Effective energy harvesting devices typically consist of a cantilever beam substrate coated with a thin layer of piezoceramic material and fixed with …
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Power Interface Design and System Stability Analysis for 400 V DC-Powered Data Centers
… friendly data centers with address increasing energy prices and distributed energy developments. </p> <p>This dissertation work aims to study and investigate the suitable technologies of power interface and system level configuration for high efficiency and reliable data centers. </p> <p>A 400 …
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Energy Storage Planning and Operations For Power Systems
<p> Energy storage is essential to future power systems. Energy storage systems can be used to follow load, stabilize voltage and frequency, manage peak loads, improve power quality, defer infrastructure upgrade investments, and support renewables. Currently, there is no tool that can support the …
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