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.
Results
Showing 1 to 16 of 16 for “"Electrical vehicles"”.
-
Architecture and method for providing priority charging for government authorized emergency electrical vehicles (AEEV)
… government predicts more than 1 million electric vehicles (EVs), on U.S. roadways by 2015, and these numbers will increase exponentially in the future. However, the power grid cannot furnish the charging for numerous EVs at a given time mainly because of its energy production capabilities, peak …
-
High Power Density and High Temperature Converter Design for Transportation Applications
… by modern transportation applications like electrical vehicles and more electric aircraft where the space and carrier capability is limited. However, there are several challenges related to transportation applications such as fault tolerance for safety concern, high temperature operation in …
-
A smart motor drive system for domestic and industrial applications
… region. Constant power, when referred to an electrical motor, is characterised by a constant mechanical output power of the motor at any rated torque and speed. The mechanical output power of a motor is the product of its torque and speed. For constant power operation, this means that at low …
-
Constant-temperature constant-voltage charging method for lithium-ion battery technology
Lithium-ion batteries are the Electrical Vehicles' (EVs) best choice of Energy Storage Systems (ESS) on account of their energy density, power density, and life cycle. In order for the EVs to compete with conventional vehicles, they need faster-charging methods to have equivalent refueling time. …
-
Renewable Energy and the Smart Grid: Architecture Modelling, Communication Technologies and Electric Vehicles Integration
… with the rapid growth of the number of electrical vehicles and the widely established of the fast power charging stations in urban and rural area, the unpredictable power charging demand will become another challenge to the power grid in a few years. In this thesis we propose the …
-
Technology assessment and market analysis of solid state ultracapacitors
… to have huge application potential as the electrical energy storage device in Hybrid Electrical Vehicles (HEVs) due to the projected high energy density. The potential high energy density of SSUs is achieved through engineering dielectric materials to possess high breakdown voltage and/or …
-
Probabilistic assessment of the impact of integrating large-scale high-power fast charging stations on the power quality in the electric power distribution systems
… method is used to probabilistically estimate the electrical vehicles (EV) power demand when charging from the fast charging stations. The IEEE 34-bus standard test distribution system is employed to simulate the different impacts from different chargers’ manufactures. The results have shown that …
-
Development and modeling of novel battery thermal management systems for electric and hybrid electric vehicles
… the lithium ion batteries in battery packs for electrical and hybrid electrical vehicles. This thesis studies, develops and models novel battery thermal management systems for the battery packs in hybrid electric vehicles and electric vehicles. The systems’ thermal performances are assessed …
-
Variable Ratio Matrix Transformer based LLC Converter for Two-Stage Low-Voltage DC-DC Converter Efficiency Improvement
The low-voltage dc-dc converter (LDC) in electrical vehicles (EVs) is to convert high dc voltage (270V~430V) from traction battery to low dc voltage (12.5V~15.5V) for the vehicle auxiliary systems. Galvanic isolation is required in the LDC due to safety considerations. Three challenges exist in the …
-
Air quality analysis of nitrogen oxides and relationships with ozone pollution
… as using urea to reduce NOx emission for diesel vehicles and developing all-electrical vehicles and plug-in hybrid electric vehicles. This research focused on the data analysis of NO₂ and ozone concentrations in Chicago from the SASA project. Other analyses also provided some data for states and …
-
Knowledge Discovery for Sustainable Urban Mobility
… however, the impact of high adoption of electric vehicles on different units such as electricity grid should be precisely addressed. In this dissertation, we use data analytics methods in order to tackle major issues in SUM. We focus on mobility and energy issues of SUM by characterizing …
-
Silica Nanoparticle-Based Platform for Rare Earth Element Recovery and Separation
… energy technologies including batteries for electrical vehicles, wind turbines and LED screens due to their unique magnetic, optical, and electronic properties. Efficient methods for their recovery and separation are urgently needed to meet the growing demands of a rapidly evolving green …
-
Ultrasonic synthesis of materials for energy conversion devices
… the market more than ever, and battery-powered electrical vehicles are no longer a dream. However, the energy conversion and storage devices are the bottleneck in technological innovation, since the materials which applied to these devices have not shifted a lot from the early 20th century; …
-
Optimization and State Estimation of Li Ion Cells Using Single Particle Model
… laptops, cell phones) to automotive (e.g. Hybrid Electrical Vehicles) and aerospace (e.g. satellite power sources). Battery modeling is a key factor to design, optimize and control Li ion cells. Due to reliability and robustness, physics-based models are of great interests with respect to …
-
Independent power flow control of multiple energy sources using a single electric machine
… integration of hybrid energy storage systems on electrical vehicles such that the regenerative power can be directed to a super-capacitor while the cruising power is consumed from a battery bank. Nevertheless, this technique can be envisaged for different applications, from wind turbines to …
-
Incumbentes vs. challengers na indústria automóvel: o caso Volkswagen
A indústria automóvel tradicional enfrenta o dilema da cada vez maior popularidade dos veículos elétricos, forçando a uma transição generalizada por parte das incumbentes. Sendo inevitável responder às necessidades dos mercados, assim como de atingir as metas ambientais definidas por múltiplos …