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Articles 1 - 4 of 4
Full-Text Articles in Engineering
Optimal Power Flow Control Of Networked Dc Microgrids, Eddy H. Trinklein
Optimal Power Flow Control Of Networked Dc Microgrids, Eddy H. Trinklein
Dissertations, Master's Theses and Master's Reports
The US military is moving toward the electrification of many weapon systems and platforms. Advanced weapon systems such as high energy radar, electro-magnetic kinetic weapons and directed energy pose significant integration challenges due to their pulsed power electrical load profile. Additionally, the weapons platforms, including ships, aircraft, and vehicles can be studied as a mobile microgrids with multiple generation sources, loads, and energy storage. There is also a desire to extend the mission profile and capabilities of these systems. Common goals are to increase fuel efficiency, maintaining system stability, and reduce energy storage size as typically required to enable pulsed …
Networked Microgrid Optimization And Energy Management, Robert S. Jane
Networked Microgrid Optimization And Energy Management, Robert S. Jane
Dissertations, Master's Theses and Master's Reports
Military vehicles possess attributes consistent with a microgrid, containing electrical energy generation, storage, government furnished equipment (GFE), and the ability to share these capabilities via interconnection. Many military vehicles have significant energy storage capacity to satisfy silent watch requirements, making them particularly well-suited to share their energy storage capabilities with stationary microgrids for more efficient energy management. Further, the energy generation capacity and the fuel consumption rate of the vehicles are comparable to standard diesel generators, for certain scenarios, the use of the vehicles could result in more efficient operation. Energy management of a microgrid is an open area of …
Lithium-Ion Battery Degradation Evaluation Through Bayesian Network Method For Residential Energy Storage Systems, Khalid Khan
Lithium-Ion Battery Degradation Evaluation Through Bayesian Network Method For Residential Energy Storage Systems, Khalid Khan
Dissertations, Master's Theses and Master's Reports
Batteries continue to infiltrate in innovative applications with the technological advancements led by Li-ion chemistry in the past decade. Residential energy storage is one such example, made possible by increasing efficiency and decreasing the cost of solar PV. Residential energy storage, charged by rooftop solar PV is tied to the grid, provides household loads. This multi-operation role has a significant effect on battery degradation. These contributing factors especially solar irradiation and weather conditions are highly variable and can only be explained with probabilistic analysis. However, the effect of such external factors on battery degradation is approached in recent literature with …
Development Of The Coil Volume Method For Time-Domain Simulation Of Internal Faults In Transformers, Elizaveta Egorova
Development Of The Coil Volume Method For Time-Domain Simulation Of Internal Faults In Transformers, Elizaveta Egorova
Dissertations, Master's Theses and Master's Reports
A power transformer is a very important and expensive asset for a utility. As for any other power equipment, the transformer is subject to internal faults. The extent of transformer damage depends on the fault duration. Therefore, the protective relays should provide for sensitivity, selectivity, and speed of operation to minimize the effects of damaging conditions. High sensitivity of the relay allows it to identify internal faults quickly. However, the relay should not jeopardize the normal operation of the transformer. To determine desirable relay settings, a transformer model for simulation of internal faults is required.
Transformer models, shown in the …