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Full-Text Articles in Physical Sciences and Mathematics
System For Detection Of Defects In Cables Of Bridge Structures, Emad Ismail Abdel Salam
System For Detection Of Defects In Cables Of Bridge Structures, Emad Ismail Abdel Salam
Theses and Dissertations
Over the last 75 years, many cable-supported bridges have been built in America, Europe, Asia and other parts of the world. However, over the years these bridges have aged and been exposed to environmental conditions such as rain, snow, de-icing and harmful chemicals. These conditions cause various levels of deterioration in bridges, particularly corrosion. Corrosion causes a loss of cross-section in the steel, adversely affecting the bridge's capacity to carry its service loads, and can possibly cause bridge failures. Although many methods have been attempted to inspect these bridges, most have offered limited success. In the recent years, it has …
Dc Microgrid Modeling And Energy Storage Placement To Enhance System Stability, Carl Westerby
Dc Microgrid Modeling And Energy Storage Placement To Enhance System Stability, Carl Westerby
Theses and Dissertations
The work of this thesis represents a joint venture between the University of Wisconsin-Milwaukee and the University of Wisconsin-Madison. A DC microgrid is selected for the efficiency benefits, lack of reactive power in the system, and ease of connecting to an AC grid. The system modeling relies on physical parameters and industry standard methods for the estimation of loads and lines. An example model is created for the University of Wisconsin - Milwaukee's Campus. Due to the high penetration of renewable energy sources in the example model, system stability is a concern. To help mitigate stability issues, analysis is performed …