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 “"Battery degradation"”.
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Charge Scheduling of Plug-in Hybrid Electric Vehicles (PHEVs) for Minimized Li-ion Battery Degradation
… of V2G for profit will result in the accelerated degradation of the Li-ion batteries of the PHEVs. Thus, it is necessary to have charging schedules that would meet the requirements of all parties. Swarm intelligence techniques are used in this thesis in order to devise strategies that would help …
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Enhancing the study of battery degradation using machine learning to get more out of data
… climate change. This work investigates the degradation of two key technologies for energy storage. Lithium-ion batteries (LIBs) are the most promising candidate for use in electric vehicles and portable electronics, whilst redox flow batteries (RFBs) are a promising candidate for grid-level …
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Non-equilibrium thermodynamics in porous media : battery degradation, and sorption and transport in porous materials
… In this thesis I examine two such problems: the degradation of lithium-ion batteries, and sorption and transport of fluids in porous materials. The dominant capacity fade mechanism in many lithium-ion batteries is the loss of cyclable lithium to a solid-electrolyte interphase layer on the surface …
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In-depth study and analysis of lithium-ion battery states using battery degradation data from electrochemical impedance spectroscopy
… focuses on the study and analysis of lithium-ion battery (LIB) degradation mechanisms throughout the battery life. The performance of LIB deteriorates due to chemical and mechanical degradation that occurs during the battery operation affecting the health of the batteries. It is critical to …
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Modeling the impact of battery degradation within lifecycle cost based design optimization of heavy-duty hybrid electric vehicles
… on HEV powertrain design have either ignored battery degradation, or failed to holistically capture its impact from a lifecycle cost perspective. The focus of this effort is the development of a model-based framework that enables parametric optimization of the design and control of hybrid …
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Smart control architecture for microgrid application
… reduce the billing cost for power incorporating battery degradation mechanism.</p> <p>Three works are discussed in this research that discusses methodologies to improve the operation of a three phase grid connected inverters. The first work discusses a globally stable estimation architecture for …
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Batteries in Electricity Markets: Economic Planning and Operations
… 1800, while it is till recently that grid-scale battery energy storage become commercially viable and are seeking merchant opportunities in electricity markets. Battery energy storage have faster ramp speed compared to other types of generation units, and are extremely valuable for facilitating …
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STATISTICAL MODELS AND INFERENCE FOR LI-ION BATTERY PROGNOSTICS
… statistical models and inference for the Li-ion battery prognostics based on the easy to measure operational profiles. The three models include a Bayesian hierarchical model which is good at long term predictions of battery degradation state, a state space based model which is appropriate for …
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A multistage-constant-current, temperature-controlled, health-conscious fast charging algorithm for lithium-ion batteries
… affect the health and cycle life of the battery due to excessive temperature rise resulting in accelerated degradation of the battery chemistry. Especially in subzero conditions, the chemical reactions are much slower, resulting in increased internal impedance. This leads to a higher rate …
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Adaptive, Federated, and Resilient Health Monitoring via Novel Online Collaborative Learning Algorithms
… world applications including cognitive degradation monitoring in Alzheimer’s Disease (AD) and battery degradation monitoring.
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Learning the Electrochemistry of Degradation and Safety in Graphite Porous Electrodes for Lithium-ion Batteries
… time and cost requirements. However, modeling battery degradation is challenging as it not only is hard to visualize in-operando, but also affects cell performance at multiple scales - from single particle to porous electrode to the battery pack. Insights obtained from experimentation on a …
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Li-ion battery electrode state of charge and degradation monitoring using battery casing as the reference electrode
Lithium-ion battery (LIB) internal state such as state of charge (SOC), electrode capacity, and available lithium-ion monitoring is helpful for effective battery degradation monitoring. Monitoring these internal parameters is challenging due to the weak observability of the electrode parameters and …
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Optimal electric vehicle scheduling : A co-optimized system and customer perspective
… using a moving-horizon approach. Further, battery degradation costs have been explored with vehicle-to-grid implementations, thus accounting for customer net-revenue and vehicle utility for grid support. A Pareto front, thus obtained, provides the nexus between customer and system desired …
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Reduction of the Premature Aging of PEM Fuel Cell - Battery systems by Implementing an Advanced Hybrid Control System Based on Double PID, Neural Network Load Predicting Algorithm and Optimal Battery Sizing Algorithm.
… level of abstraction to reduce FC internal degradation. The proposed work does not focus on current FC global research trends. Instead, it addresses the different fuel cell challenges by proposing new solutions to the external factors (dynamic of the load, battery size, etc.) affecting a FC …
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Optimizing In-Garage Charging Schedules to Maximize Electrified Mileage for Electric Bus Fleets
… block schedules, energy requirements, and battery capacity. To solve this complex problem in a reasonable timeframe, we further decompose the problem into two phases. The initial phase involves determining which blocks should be serviced by the same bus and establishing a schedule that …
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Optimizing battery swapping stations for electric vehicles and power system integration
… like long waiting times at charging stations and battery degradation due to fast charging are some of the major barriers to widespread EV deployment. Battery swapping stations (BSS) arise as a promising alternative by enabling quick battery replacements. Moreover, BSS has a critical role in …
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Optimal Architectures for Electric Vehicle Fast Charging and Impacts on Grid and Battery Life
… quality disturbances on the grid and accelerated degradation of EV battery life. Therefore, a optimally structured approach is required to achieve scalable megawatt-scale future EVFS. This thesis proposes optimal EVFS architecture that addresses both grid and battery related challenges posed by …
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Integration of EVs and DGs into the Electric Power System for Grid Modernization
… of EVs in the system, faster charging, shorter battery reaction time, and vehicle-to-grid services, EVs could be attractive sources for system operators (SOs) to improve system reliability while creating opportunity for EV owners to gain monetary benefits. In addition, the potential benefits of DG …
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Revealing Interfacial Reactions and Charge Transfer Kinetics in Electrochemical Energy Storage and Conversion
… accounted for interface impedance build-up and battery capacity fading. Based on the proposed mechanism, strategies to suppress battery degradation were further demonstrated and discussed. Next, the kinetic mechanism for Li-ion intercalation was investigated, and experimental evidence from a …
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Designing Electrolytes for Durable and Fast-Charging Alkali-Ion Batteries
… Li-ion batteries have become the dominant battery chemistry since the 1990s. They reliably power smartphones, laptops, and electric vehicles, making them indispensable to modern society. As the demand for sustainable energy solutions continues to rise, advancements in battery technology are …
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