Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 4 of 4
Full-Text Articles in Engineering
Design Of An Asymmetric Reluctance Machine For A Generator Application, Bryan David Marquet
Design Of An Asymmetric Reluctance Machine For A Generator Application, Bryan David Marquet
Open Access Theses
This work compares an Asymmetric Reluctance Machine (ARM) to a Uniform air Gap Reluctance Machine (UGRM) for a generator application. The ARM employs an asymmetric rotor pole to increase machine performance, specifically increasing torque density. A multi-objective optimization is employed to minimize mass and loss subject to design constraints. Two machines are compared in terms of their Pareto-optimal fronts.
Optimization Of Wireless Power Networks For Biomedical Applications, Kyle A. Thackston
Optimization Of Wireless Power Networks For Biomedical Applications, Kyle A. Thackston
Open Access Theses
Successful physiological integration of electronics will open the doors to new methods of treatment and diagnoses. One of the key challenges of this integration is designing devices as small as possible while still maintaining high functionality, such as bio-signal recording, processing, telemetry, and stimulation. Wireless power transfer (WPT) can help shrink a device’s footprint by removing the need for bulky batteries. While many modalities of WPT exist for biomedical applications, the optimal power transfer efficiency (PTE) is seldom achieved due to improper impedance matching. Existing methods for determining the optimal impedance matching conditions tend to be application specific and make …
Finfet Device Optimization At 15nm For Near-Threshold Operation, Jolene Singh
Finfet Device Optimization At 15nm For Near-Threshold Operation, Jolene Singh
Open Access Theses
Much of the current research in the electronic industry focuses on reducing power consumption of digital circuits. Towards the same many attempts are being made to reduce the operating voltage of the circuits. It has been shown through device and circuit analysis that a circuit consumes minimum energy when operated near threshold voltage. In this thesis I vary device parameters and study their effects on energy consumption and delay of the device for the two regions of operation - superthreshold and near-threshold, using LUTs of IV and CV characteristics, verilogA and hSpice. Finally, device parameters are obtained for an optimum …
Time Domain Simulation Of Novel Photovoltaic Materials, Haejun Chung
Time Domain Simulation Of Novel Photovoltaic Materials, Haejun Chung
Open Access Theses
Thin-film silicon-based solar cells have operated far from the Shockley- Queisser limit in all experiments to date. Novel light-trapping structures, however, may help address this limitation. Finite-difference time domain simulation methods offer the potential to accurately determine the light-trapping potential of arbitrary dielectric structures, but suffer from materials modeling problems. In this thesis, existing dispersion models for novel photovoltaic materials will be reviewed, and a novel dispersion model, known as the quadratic complex rational function (QCRF), will be proposed. It has the advantage of accurately fitting experimental semiconductor dielectric values over a wide bandwidth in a numerically stable fashion. Applying …