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 15 of 15 for “"Hybrid energy storage"”.
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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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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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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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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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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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Nanostructure materials based supercapattery for next generation pacemaker
… is a new terminology to define the hybrid energy storage system, which combines the high energy-storage-capability of conventional batteries with the high power-delivery-capability of supercapacitors. With the benefit of combining battery-type material and capacitive material, …
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Management and control of energy storage systems for stationary and automotive applications
… has presented a number of scenarios in which Energy Storage Systems (ESSs) can be usefully employed for increasing energy system performances. Particularly, after introducing the State-of-the-Art of ESS technologies (Chapter 1), reference has been made to some stationary and automotive …
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Energy harvesting-aware design of wireless networks
Recent advances in low-power electronics and energy-harvesting (EH) technologies enable the design of self-sustained devices that collect part, or all, of the needed energy from the environment. Several systems can take advantage of EH, ranging from portable devices to wireless sensor networks …
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DFIG-Based Split-Shaft Wind Energy Conversion Systems
In this research, a Split-Shaft Wind Energy Conversion System (SS-WECS) is investigated to improve the performance and cost of the system and reduce the wind power uncertainty influences on the power grid. This system utilizes a lightweight Hydraulic Transmission System (HTS) instead of the …
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Design, analysis, and control of switched supercapacitor banks for e-transportation electric energy storage systems
The hybridization of supercapacitors (SCs) with batteries in electric vehicles (EVs) improves the battery life, acceleration, and driving range. However, the efficiency of the power interface that unites the batteries and SCs are affected due to wide voltage variations at the SC bank terminals. …
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Independent power flow control of multiple energy sources using a single electric machine
… an independent power flow control of different energy sources connected to a single electric machine with a multitude of three-phase winding sets has been investigated. These machines are highly suitable for high power and critical applications. Additionally, these machines utilise the …
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Design of electric vehicle propulsion system incorporating flywheel energy storage
… to meet the requirements of sufficient power and energy, quick recharge, safety, low cost and sufficient life. However the battery can either provide high power or high energy but not both. Hybridisation of the energy source is one of the methods to improve the energy efficiency of the vehicle, …
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Control Hierarchies for Critical Infrastructures in Smart Grid Using Reinforcement Learning and Metaheuristic Optimization
… characterized by high penetration of distributed energy resources (DERs), and 2) DC-rail transportation systems in congested urban areas. The rising integration of DERs into the power grid is causing a paradigm shift in the power distribution network. Consequently, new control challenges for …
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A hybrid solution for distributed energy storage for microgeneration in microgrids: Design of the electronic power and control system
… Electronic Converters (PECs) used to interface Hybrid Energy Storage Systems (HESSs) to Direct Current (DC) microgrids and nanogrids. In such type of power systems, a DC bus acts as the power link between the grid Voltage Source Inverter (VSI) converter, the energy storage DC/DC converters and …