Engineering Commons^™

Design And Analysis Of A Traveling Wave Fault Locator, Gerald Austin Taylor

Master's Theses

The accuracy of fault location is an integral part of power system operations. Improved fault location can reduce maintenance time, increase efficiency, and save money. When a fault occurs, it sends a disturbance in the current and voltage in each direction at almost the speed of light. This disturbance is called a traveling wave, and can be used to locate faults. In efforts to increase accuracy, the use of traveling wave theory to locate faults has become more popular.

This thesis goes through the process of designing and testing a traveling wave fault locator. The design includes analog and digital …

Spring-Guided Electromagnetic Vibrations Energy Harvester, Ghufran Jaber Aldawood

Master's Theses

In recent years, vibration based energy harvesting techniques showed a promising alternative to power wireless sensor networks (WSN). Billions of low power sensors are currently used widely in wireless sensor networks (WSN) and the Internet of Things environment (IoT). These sensors are currently powered by a traditional power source, i.e. a disposable battery. Vibrations are an abundant source of kinetic energy that can serve as the power source for these sensor nodes. This approach eliminates the necessity for frequent battery replacement due to their short-life span and hazardous disposal process. The adverse and irreversible effect from the disposal of these …

Surface Engineering Solutions For Immersion Phase Change Cooling Of Electronics, Brendon M. Doran

Master's Theses

Micro- and nano-scale surface modifications have been a subject of great interest for enhancing the pool boiling heat transfer performance of immersion cooling systems due to their ability to augment surface area, improve wickability, and increase nucleation site density. However, many of the surface modification technologies that have been previously demonstrated show a lack of evidence concerning scalability for use at an industrial level. In this work, the pool boiling heat transfer performance of nanoporous anodic aluminum oxide (AAO) films, copper oxide (CuO) nanostructure coatings, and 1D roll-molded microfin arrays has been studied. Each of these technologies possess scalability in …