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 37 for “"Internal Resistance"”.
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Internal resistance variances in lithium-ion batteries and implications in manufacturing
… issues in manufacturing that lead to cell DC internal resistance (DCIR) variance, provides an overview of generally accepted cell degradation mechanisms and modeling techniques associated with IR as a function of cycling, models the cycle life of a simple battery pack of two parallel-connected …
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The application of genetic algorithms to parameter estimation in lead-acid battery equivalent circuit models
… the parameters of the battery, including the internal resistances, SOC, and capacity. Simulation results show that the model is able to adequately simulate the battery discharge process. The aforementioned models were extended to a further investigation of the batteries state of health. There …
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The development of novel services for battery storage in domestic applications and communal mini-smart grids
… the battery over its lifetime results in gradual internal resistance growth due to electrochemical reactions leading to structural and chemical degradation. This study focuses on the utilisation of the Lithium-ion battery within residential applications and relevance in facilitating the …
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Development and assessment of an organisational readiness framework for emerging technologies : an investigation of antecedents for South African organisations' readiness for server virtualisation
… preparedness, Industrial relationships, Internal resistance and External influence), for assessing organisations’ readiness for emerging technologies and applications.
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Low Power IC Design with Regulated Output Voltage and Maximum Power Point Tracking for Body Heat Energy Harvesting
… and require the load to be matched to the TEG internal resistance for maximum power transfer to occur. This thesis research proposes a power management integrated circuit (PMIC) that steps up ultralow voltages generated by TEGs to a regulated 3 V, while matching the internal resistance. The …
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DEGRADATION ANALYSIS AND HEALTH MONITERING OF LITHIUM ION BATTERIES
… including current, voltage, temperature and internal resistance, was analyzed in order to find the best features that could be used to track and characterize battery performance degradation. Degraded samples were disassembled according to a newly developed disassembly methodology that …
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A Study on Remaining Useful Life Prediction for Prognostic Applications
… We modeled battery as a voltage source and internal resisters. By analyzing voltage change trend during discharge, we made the prediction of battery remain discharge time in one discharge cycle. By analyzing internal resistance change trend during multiple cycles, we were able to predict the …
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THE EFFECT OF RELATIVE ELECTRODE SIZE ON THE PERFORMANCE OF A SUPERCAPACITIVE MICROBIAL FUEL CELL DESIGN
… cathode area also had a positive effect on the internal resistance of the cell, lowering the equivalent series resistance by approximately 47%. Doubling the anode area increased peak power output slightly, with an 11% increase in peak power output observed. A model was constructed in order to …
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Biophysical interactions and stability at salt marsh margins
… more or less likely to persist over time. The resistance of salt marsh sediments to erosion is influenced by physicochemical and biological properties. So far, research on salt marsh margin erosion has largely focused on external forcing and margin response at scales much larger than those on …
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The Iranian Threat: Iran's Confrontation With The United States And Pursuit Of Middle Eastern Hegemony
… Iranian threat, including diplomacy, support for internal resistance movements, and military options. The recommendation of this thesis is that a military option is not only necessary, but inevitable, whether initiated by the United States, Israel, or Iran.
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Blast diagnostic tools and techniques: a review
… Piezoresistive sensors experience a change in internal resistance when the sensing material is subjected to mechanical strain, while piezoelectric sensors generate an electric charge when placed under a similar condition. In addition to the two industry standards the Manganin pressure sensor …
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NOVEL APPROACHES TO FAST OCV CHARACTERIZATION AND IMPROVED CAPACITY ESTIMATION IN LITHIUM ION BATTERIES
… which results in a voltage drop based on the internal resistance and charging/discharging current. This thesis presents an approach to counteract this voltage drop, by appropriately over-charging and over-discharging the battery to obtain the most accurate representation of the capacity of the …
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(S)CORE FOR SUSTAINABILITY. DRIVING CULTURAL TRANSFORMATION AND ACTION IN MEDITERRANEAN SPORTS ORGANISATIONS
… responsibility as key drivers, while internal resistance and limited expertise remain barriers. Collectively, the studies offer an updated understanding of sustainability in Mediterranean sports organisations and provide practical tools to support cultural, strategic, and operational …
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TiO2-doped Ionic Polymer-Metal Composite Actuator
… with increasing the content of TiO2, in spite of internal resistance drop in the samples. Above all, bending displacements of TiO2-IPMCs is decreased as increase of TiO2-content in the samples, while blocking force of each sample is increased with increase of amount of TiO2.
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Strategies to enhance extracellular electron transfer rates in wild-type cyanobacterium Synechococcus elongatus PCC7942 for photo-bioelectricity generation
… by constructing a more efficient design (lower internal resistance), which was fabricated with carbon fibres and nitrocellulose membrane, both inexpensive materials. To strategically obtain higher exoelectrogenic rates, S. elongatus PCC7942 was conditioned by iron limitation and CO2 enrichment. …
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Evaluation of the Cycle Profile Effect on the Degradation of Commercial Lithium Ion Batteries
… % compared to beginning of life. The change in internal resistance of the batteries over the course of the testing was also monitored and found to increase 21% and 12% compared to beginning of life for the pulse-heavy and square-wave profiles respectively. Cycling tests on coin cells with …
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Passive Stiffness Characteristics of the Scoliotic Lumbar Torso in Trunk Flexion, Extension, Lateral bending, and Axial Rotation
… or the range of motion where there is minimal internal resistance, was then calculated. Stiffnesses within the NZ and outside of the NZ were also calculated. Stiffness asymmetries were also computed within each trial. These parameters were statistically compared between factor of population and …
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Self-respect and The Obligation to Resist Oppression
… the bare minimum of this obligation is to resist internally. I will demonstrate that resisting internally leaves space for the oppressed to affirm the oppressors' false beliefs. Affirming the oppressor's false belief causes the oppressed person to disrespect themself. In order to understand why we …
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Racing the City: Intentional Integration and the Pursuit of Racial Justice in Post-World War II America
… structural, and cultural forces, and with internal resistance to change. In that sense, I speak to the larger debates over post-WWII urban space; my research, here, implies a cultural explanation complementing the political and economic narratives of white flight and urban crisis that …
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Investigation of new phase change material based thermal management systems for Li-ion batteries
… the required range at all discharge rates. The internal resistance of the cylindrical and prismatic Li-ion batteries is measured at different states of charge and operating temperatures. The obtained results are used to develop a model for the battery pack in MATLAB Simulink. The good agreement …
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