Now showing items 1-10 of 1499
Design and Analysis of a Small-Scale Wind Energy Conversion System
(Virginia Tech, 2014-03-26)
This dissertation aims to present detailed analysis of the small scale wind energy conversion system (WECS) design and implementation. The dissertation will focus on implementing a hardware prototype to be used for testing ...
Resonant Cross-Commutated Dc-Dc Regulators with Omni-Coupled Inductors
(Virginia Tech, 2018-08-29)
The switching noise in a hard-switched point-of-load (POL) converter may result in false turn on, electromagnetic interference issues, or even device breakdown. A resonant cross-commutated buck (rccBuck) converter operates ...
An analog/hybrid computer solution of electromagnetic scattering problems
(Virginia Tech, 1976-06-15)
High-Speed Quasi-Distributed Optical Fiber Sensing Based on Ultra-Weak Fiber Bragg Gratings
(Virginia Tech, 2017-01-25)
Invention of silica based optical fiber not only led to revolution in communication but also provided fundamental basis for many research areas. One example area is distributed optical fiber sensing, which has been attracting ...
Active Source Management to Maintain High Efficiency in Resonant Conversion over Wide Load Range
(Virginia Tech, 2015-09-18)
High-frequency and large amplitude current is a driving requirement for applications such as induction heating, wireless power transfer, power amplifier for magnetic resonant imaging, electronic ballasts, and ozone generators. ...
Form-Factor-Constrained, High Power Density, Extreme Efficiency and Modular Power Converters
(Virginia Tech, 2018-12-18)
Enhancing performance of power electronics converters has always been an interesting topic in the power electronics community. Over the years, researchers and engineers are developing new high performance component, novel ...
Very High Frequency Integrated POL for CPUs
(Virginia Tech, 2017-05-10)
Point-of-load (POL) converters are used extensively in IT products. Every piece of the integrated circuit (IC) is powered by a point-of-load (POL) converter, where the proximity of the power supply to the load is very ...
A Real-time Management of Distribution Voltage Fluctuations due to High Solar Photovoltaic (PV) Penetrations
(Virginia Tech, 2017-01-24)
Due to the rapid growth of grid-tied solar photovoltaic (PV) systems in the generation mix, the distribution grid will face complex operational challenges. High PV penetration can create overvoltages and voltage fluctuations ...
Differential Network Analysis based on Omic Data for Cancer Biomarker Discovery
(Virginia Tech, 2017-06-16)
Recent advances in high-throughput technique enables the generation of a large amount of omic data such as genomics, transcriptomics, proteomics, metabolomics, glycomics etc. Typically, differential expression analysis ...
Investigating the Modification of Spontaneous Emission using Layer-by-Layer Self-Assembly
(Virginia Tech, 2013-02-04)
The process of spontaneous emission can be dramatically modified by optical micro- and nanostructures. We studied the modification of fluorescence dynamics using a polymer spacer layer fabricated through layer-by-layer ...