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 235 for “"discharging"”.
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Charging and discharging of Lichtenberg electrets
<p>The research presented here describes a unique way to deposit a large amount of charge onto the surface of a thin dielectric sheet to create a Lichtenberg electret that can be discharged elsewhere to form spectacular Lichtenberg figures. This study examines how the amount of charge deposited …
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Modification of solidification structures by pulse electric discharging
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1985.
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Active balancing of lithium-ion cells for maximum power discharging
The future of Electric Vehicle’s (EV) depends on the adoption of the technology. Currently the limiting factor for EV adoption is mainly the initial cost, the driving range, charging capability, and the battery life. The Battery Management System (BMS) in any Lithium chemistry battery system is …
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An analysis of water quality discharging into the Berg River at Paarl, Western Cape
In densely settled urban and peri-urban areas of South Africa, stormwater infrastructure is frequently being used as a conduit for the daily discharge of effluents resulting in the deterioration of rivers and other receiving water bodies. This study investigates the pollution load from urban …
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An analysis of circumstantial evidence in discharging the burden of proof: A critical review of the Zambian Jurisprudence
… the law relating to circumstantial evidence in discharging the burden of proof and has sought to criticize the Zambian jurisprudence in that regard. In order to come up with the contents herein I sought help from the institutions themselves such as the police and the courts and the roles of the …
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A study of the processes of charging and discharging constant volume tanks with air by C.K. Wagner, F.D. Skinner.
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1953.
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Numerical Design of a 3-Stage Cascaded Thermal Energy Storage System for Solar Application
… between the HTF and PCM during the charging and discharging cycles leading to improved performance of the system. This dissertation investigates the performance and transient response of a packed bed operating under high-temperature conditions with phase change materials in varying encapsulations …
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A Robust Charge/Discharge Monitor for Lead Acid Batteries
… bulk charging cycles. When the batteries are discharging, lead sulfate deposits will accumulate on the electrode, which is a common reason for battery failure, and this conditioning charge can help to reduce this problem. One reason conditioning charging is not performed properly is that the …
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Improvements to a Bi-directional Flyback DC-DC Converter for Battery System of the DC House Project
… 48W with efficiency at 82% for both charging and discharging. The improvements to the control scheme allowed for better management of charging and discharging cycles of the battery.</p>
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Contribution of Recharge Along Regional Flow Paths to Discharge at Ash Meadows, Nevada
… in the Ash Meadows, Nevada wetland area are discharging groundwater at a high volume that cannot be sustained by local, present-day precipitation and associated recharge. Previous groundwater flow models for this region have required groundwater to flow through complex geology for long …
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Energy recovery at thermodynamic expansion and thermal boosting through convection in flat plate solar thermal systems.
… are limited due to restrained charging and discharging rates caused by low thermal conductivity of PCM. Hence, this research is focused on numerical and experimental analyses conducted in developing an efficient and effective TES technology with novel heat transfer mechanism and novel …
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Analytics and Decision Making in Sustainable Operations
… dynamic optimization for the charging and discharging of electric vehicles. We characterize policies that are interpretable to drivers to address distrust of automatized discharging of car batteries and prove analytically the regimes under which such policies are optimal. Finally, we work …
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Potential impact of proposed "just cause" legislation on discipline and discharge procedures in nonunion firms
… to establish just or reasonable cause for discharging an employee. Such legislation has been proposed, but not enacted, in several states. The purpose of the research was to determine the probable impact of just cause legislation on the discipline and discharge procedures of nonunion, …
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Diffusion of Three-Dimensional Slot Jets With Deep and Shallow Submergence
… receiving water thoroughly and quickly. By discharging the heated water with high initial velocity it behaves like a non-buoyant jet. The velocity discontinuity between the jet and the receiving water gives rise to strong shearing action generating turbulence, which diffuses the heated water …
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A Game-theoretic Framework to Investigate Conditions for Cooperation between Wind Power Producers and Energy Storage Operators
… storage parameters like storage size, charging/discharging limits, charging/discharging efficiency, and other market parameters like energy imbalance penalties, efficiency of up/down regulation, and electricity market prices is studied and necessary conditions for cooperation are presented.
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NOVEL APPROACHES TO FAST OCV CHARACTERIZATION AND IMPROVED CAPACITY ESTIMATION IN LITHIUM ION BATTERIES
… 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 battery.
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Aviation Propulsive Lithium-Ion Battery Packs State-of-Charge and State-of-Health Estimations and Propulsive Battery System Weight Analysis
… estimator. By reading the system measurements (discharging currents and terminal voltages) with persistent excitation, the proposed estimator can determine the present internal parameters of the battery cells and further interpolate them into state-of-charge, state-of-health, and the remaining …
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Output Capacitance Loss Measurement and Validation for Low-Voltage Silicon and GaN Devices in DC-DC Converter Applications
… exists due to the difference in charging and discharging output capacitance. In order fully utilize the potential of these novel soft-switching topologies, we need to investigate further into the origins of these losses or loss mechanisms, methods to measure or compute these losses, and then …
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Estocagem por estratificação térmica de líquido em reservatório
… the normal operating conditions (charging, discharging and static node). The theoretical results are compared to the existing experimental data. Also, the influence of the height to diameter ratio (H/D) of the vessel on the exergy efficiency is studied.
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