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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
221

A Decomposition-based Multidisciplinary Dynamic System Design Optimization Algorithm for Large-Scale Dynamic System Co-Design

Sherbaf Behtash, Mohammad 25 October 2018 (has links)
No description available.
222

Energy Optimal Routing of Vehicle Fleet with Heterogeneous Powertrains

Arasu, Mukilan T. January 2019 (has links)
No description available.
223

Control of Criteria Emissions and Energy Management in Hybrid Electric Vehicles with Consideration of Three-Way Catalyst Dynamics

Jankord, Gregory J. January 2020 (has links)
No description available.
224

Hybrid Electric Vehicle Model Development and Design of Controls Testing Framework

Satra, Mahaveer Kantilal January 2020 (has links)
No description available.
225

Look-Ahead Optimal Energy Management Strategy for Hybrid Electric and Connected Vehicles

Perez, Wilson 10 August 2022 (has links)
No description available.
226

Control Strategy For Maximizing Power Conversion Efficiency And Effectiveness Of Three Port Solar Charging Station For Electric Vehicles

Hamilton, Christopher 01 January 2010 (has links)
Recent trends in the energy sector have provided opportunities in the research of alternative energy sources and optimization of systems that harness these energy sources. With the rising cost of fossil fuel and rising concern about detrimental effects that fossil fuel consumption has on the environment, electric vehicles are becoming more prevalent. A study put out in 2009 gives a prediction that in the year 2025, 20% of new vehicles will be PHEVs.[1] As energy providers become more concerned about a growing population and diminishing energy source, they are looking into alternative energy sources such as wind and solar power. Much of this is done on a large scale with vast amounts of land used for solar or wind farms to provide energy to the grid. However, as population grows, requirements of the physical components of a power transmission system will become more demanding and the need for remote micro-grids will become more prevalent. Micro-grids are essentially smaller subsystems of a distribution system that provide power to a confined group of loads, or households. Using the idea of micro grid technology, a solar charging station can be used as a source to provide energy for the immediate surroundings, or also to electric vehicles that are demanding energy from the panels. Solar charging stations are becoming very popular, however the need for improvement and optimization of these systems is needed. This thesis will present a method for redesigning the overall architecture of the controls and power electronics of typical carports so that efficiency, reliability and modularity are achieved. Specifically, a typical carport, as seen commonly today, has been built on the University of Central Florida campus in Orlando. This iii carport was designed in such a way that shifting from conventional charging methods is made easy while preserving the fundamental requirements of a practical solar carport.
227

High Temperature Packaging For Wide Bandgap Semiconductor Devices

Grummel, Brian 01 January 2008 (has links)
Currently, wide bandgap semiconductor devices feature increased efficiency, higher current handling capabilities, and higher reverse blocking voltages than silicon devices while recent fabrication advances have them drawing near to the marketplace. However these new semiconductors are in need of new packaging that will allow for their application in several important uses including hybrid electrical vehicles, new and existing energy sources, and increased efficiency in multiple new and existing technologies. Also, current power module designs for silicon devices are rife with problems that must be enhanced to improve reliability. This thesis introduces new packaging that is thermally resilient and has reduced mechanical stress from temperature rise that also provides increased circuit lifetime and greater reliability for continued use to 300°C which is within operation ratings of these new semiconductors. The new module is also without problematic wirebonds that lead to a majority of traditional module failures which also introduce parasitic inductance and increase thermal resistance. Resultantly, the module also features a severely reduced form factor in mass and volume.
228

A Hybrid Energy Storage System Using Series-Parallel Reconfiguration Technique

Tu, Chia-Hao January 2016 (has links)
Technology advancements enable and encourage higher system electrifications in various applications. More electrified applications need more capable and higher performing sources of energy in terms of power delivery, power regeneration, and energy capacity. For example, in electric, hybrid electric, and plug-in hybrid electric vehicle applications (EVs, HEVs, and PHEVs), the power and energy ratings of the vehicle energy storage system (ESS) have a direct impact on the vehicle performance. Many researchers investigated and studied various aspects of hybrid energy storage systems (HESS) wherein multiple ESSs are combined together to share system loads, increase ESS capabilities, and cycle life. Various configurations and their application specific topologies were also proposed by other researchers; the potential of HESS has been proven to be very promising. In this research, the goal is to present the theory of a HESS configuration that has not been discovered thus far. This HESS configuration is called a series-parallel reconfigurable HESS (SPR-HESS) since it is capable of recombining multiple storage systems into different series, parallel, or series-parallel configurations, via power electronic converters, to accommodate different operation modes and load requirements. Simulations, as well as experimental verifications, are presented in this thesis. / Thesis / Doctor of Philosophy (PhD)
229

Entwicklung eines Berechnungsprogramms für disruptive hybrid-elektrische Flugantriebe

Wiegand, Marcus 30 May 2023 (has links)
Die Reduktion klimaschädlicher Emissionen ist ein wesentliches Ziel im modernen Luftverkehr. Dafür geeignete Ansätze stellen unter anderem emissionsoptimierte Flugprofile sowie der Einsatz hybrid-elektrischer Antriebstechnologien dar. Um damit verbundene Vorteile identifizieren und quantifizieren zu können, wurde am Lehrstuhl für Turbomaschinen und Flugantriebe der TU Dresden ein modularisiertes 1D-Triebwerksmodell entwickelt, welches die Leistungsrechnung und die Emissionen thermischer Flugantriebe im Auslegungspunkt sowie Off-Design (quasi-stationär) abbilden kann. Im Rahmen dieser Forschungsarbeit wird zunächst die Validierung des bestehenden Modells vertieft und dieses um ausgewählte thermische Triebwerksarchitekturen erweitert. Dabei stehen die Emissionsberechnung und der Off-Design-Betrieb aller Triebwerkskomponenten im Fokus. Von besonderer Bedeutung und Hauptteil der Arbeit ist die Integration hybrider Antriebskonzepte am Triebwerk selbst sowie hinsichtlich notwendiger Komponenten wie bspw. E-Maschinen und Batterie. Teil dessen ist die Literaturrecherche der Funktionsweise und die Ausarbeitung von Modellierungsansätzen zur Umsetzung hybrid-elektrischer Teilkomponenten und deren Verknüpfung zu Triebwerksarchitekturen. Die Implementierung und Validierung für stationäre On- und Off-Design-Berechnungen ist wesentlicher Bestandteil der Arbeit. Das entwickelte Triebwerksmodell kann für die vergleichende Betrachtung ausgewählter Triebwerksarchitekturen und Flugzyklen angewendet werden und liefert somit eine Grundlage für de-ren Optimierung. Der Brennstoffverbrauch und entstehende Emissionen können für verschiedene Triebwerke und Flugmissionen konkret ausgerechnet und abgeschätzt werden. Die Ergebnisse dienen als Grundlage für die Entwicklung neuer hocheffizienter Triebwerke. Dies ermöglicht die gezielte Reduzierung von Emissionen im Luftverkehr für konventionelle sowie für revolutionäre, fortschrittliche und noch in der Entwicklung befindliche Triebwerke.:Problem Zielstellung Methodik Ergebnisse Zusammenfassung
230

Driving Pattern Generation for Customized Energy Control Strategy in Hybrid Electric Vehicle Applications

Zhu, Qiujun 18 August 2014 (has links)
No description available.

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