Open Access. Powered by Scholars. Published by Universities.®

Power and Energy Commons

Open Access. Powered by Scholars. Published by Universities.®

1632 Full-Text Articles 1753 Authors 1426567 Downloads 75 Institutions

All Articles in Power and Energy

Faceted Search

1632 full-text articles. Page 1 of 62.

دینامیک سیستم های قدرت, Hadi Zayandehroodi 2017 Department of Electrical Engineering, Kerman Branch, Islamic Azad University, Kerman, Iran

دینامیک سیستم های قدرت, Hadi Zayandehroodi

Dr. Hadi Zayandehroodi

No abstract provided.


Development Of Intermediate Band Solar Cell Through Ingan Quantum Well Structures, Kelly McKenzie 2017 University of Arkansas, Fayetteville

Development Of Intermediate Band Solar Cell Through Ingan Quantum Well Structures, Kelly Mckenzie

Electrical Engineering Undergraduate Honors Theses

In the search for high-efficiency solar cells, InxGa1-xN has come under scrutiny as a unique material with high potential. This is due to characteristics including an easily tunable bandgap, large range of potential bandgap values, and high heat resistance. However, one factor limiting its adaptation is the high density of crystal defects. In this thesis, the qualities of InGaN are discussed and the intermediate band solar cell structure is introduced. Additionally, the growth and characterization of two sets of InGaN-based solar cell devices are reported and evaluated.


Design And Implementation Of Power Electronics For An Electric Bicycle, Kyle Jackson Goodrick, Jared Baxter, Jacob Dyer 2017 University of Tennessee, Knoxville

Design And Implementation Of Power Electronics For An Electric Bicycle, Kyle Jackson Goodrick, Jared Baxter, Jacob Dyer

University of Tennessee Honors Thesis Projects

No abstract provided.


Peak Power Demand From Centrifugal Chillers Used To Comfort Condition The John C. Hodges Library, Summer F. Fabus, Jared A. Baxter, Kyle Jackson Goodrick, Divyani Rao, Kevin Chiang 2017 University of Tennessee, Knoxville

Peak Power Demand From Centrifugal Chillers Used To Comfort Condition The John C. Hodges Library, Summer F. Fabus, Jared A. Baxter, Kyle Jackson Goodrick, Divyani Rao, Kevin Chiang

University of Tennessee Honors Thesis Projects

No abstract provided.


Linear Quadratic Optimal Control For A Cascaded Converters-Based Microgrid, Amlam Niragire 2017 University of Arkansas, Fayetteville

Linear Quadratic Optimal Control For A Cascaded Converters-Based Microgrid, Amlam Niragire

Theses and Dissertations

There is a constant transformation of the electric grid due to an ongoing interest in the deployment of renewable energy resources and electric microgrid formation. This transformation, though advantageous in many ways, poses great challenges for the energy industry and there must be a constant improvement in modeling, simulation, analysis and control techniques in order to characterize and optimize the system design and operation. In this light, the scope of this thesis is focused on developing a linear model, analyzing the stability and designing an optimal linear quadratic regulator (LQR) for a microgrid system. The microgrid system used is inspired ...


5g-Ucda Multi Antenna-To-Logical Cell Circular Fifo Mapping Strategy For High-Speed Train Wireless Communications, Subharthi Banerjee 2017 University of Nebraska-Lincoln

5g-Ucda Multi Antenna-To-Logical Cell Circular Fifo Mapping Strategy For High-Speed Train Wireless Communications, Subharthi Banerjee

Theses, Dissertations, and Student Research from Electrical & Computer Engineering

2020 is the target year for the roll out of fifth generation wireless communication methodologies. The commercial vendors have characterized 5G as a collection of disruptive set of technologies to provide high throughput, low latency communication supporting a variety of services, i.e., machine to machine communication to next generation base stations and vehicle-to-vehicle communication to radio-over-fiber and high mobility channels. High-speed train wireless communication channels as a subset of high mobility channels have their clear advantages and disadvantages considering other vehicular channels. The speed of high-speed trains is going to reach 500km/hr and with Hyperloop it may reach ...


5‐Minute Power Ouptut Data For A 1.72kwp Pv System With Weather Variables, Lacour Ayompe, Aidan Duffy, Kevin O'Farrell 2017 Dublin Institute of Technology

5‐Minute Power Ouptut Data For A 1.72kwp Pv System With Weather Variables, Lacour Ayompe, Aidan Duffy, Kevin O'Farrell

Other resources

This dataset contains 5-minute power (AC and DC) power output date from a 1.72kWp PV system located in Dublin in 2009-10 together with input weather variables and system parameters. Details below.

Geographical site: FOCAS Institute building roof top, Dublin Institute of Technology, Kevin Street, Dublin 2, Ireland.

Situation: Latitude 53.4degN Longitude -6degE

Time zone GMT

Installation date: 4th April 2008

PV array orientation: Tilt 53deg Azimuth 0deg

Near shadings: No shadings

Building height: Approximately 12 m

PV array capacity: 1.72 kWp

Collection period: 4th April 2009 – 3rd April 2010

The data acquisition system consisted of ...


A Study Of The Reduction Of Excessive Energy Generated By Strong Winds On Power Lines Via A Velocity Damping Controller At The Transmission Tower, Donald W. Fincher Jr. 2017 Kent State University - Kent Campus

A Study Of The Reduction Of Excessive Energy Generated By Strong Winds On Power Lines Via A Velocity Damping Controller At The Transmission Tower, Donald W. Fincher Jr.

Undergraduate Research Symposium

In this research, we are pursuing the robustness of a self-excited vibrational system with negative damping. In practice, this is manifested as conductor galloping of overhead power lines, which is an oscillation of the lines caused by strong winds. Improved transmission tower designs are needed which are capable of combating excessive stresses exerted on the tower by the galloping power lines. Our model of this self-excited system shows that the oscillations can be controlled by adding a boundary velocity feedback controller at the transmission tower. Using a decomposition method, we show there is a closed form analytical solution which predicts ...


Off Grid Solar Array, Courtney Elliott 2017 California Polytechnic State University, San Luis Obispo

Off Grid Solar Array, Courtney Elliott

Electrical Engineering

No abstract provided.


Energy Harvesting From Exercise Machines: Buck-Boost Converter Design, Andrew E. Forster 2017 California Polytechnic State University, San Luis Obispo

Energy Harvesting From Exercise Machines: Buck-Boost Converter Design, Andrew E. Forster

Master's Theses and Project Reports

This report details the design and implementation of a switching DC-DC converter for use in the Energy Harvesting From Exercise Machines (EHFEM) project. It uses a four-switch, buck-boost topology to regulate the wide, 5-60 V output of an elliptical machine to 36 V, suitable as input for a microinverter to reclaim the energy for the electrical grid. Successful implementation reduces heat emissions from electrical energy originally wasted as heat, and facilitates a financial and environmental benefit from reduced net energy consumption.


Stakeholder Outcomes In A Wind Turbine Investment; Is The Irish Energy Policy Effective In Reducing Ghg Emissions By Promoting Small-Scale Embedded Turbines In Sme's?, Tony Kealy 2017 Dublin Institute of Technology

Stakeholder Outcomes In A Wind Turbine Investment; Is The Irish Energy Policy Effective In Reducing Ghg Emissions By Promoting Small-Scale Embedded Turbines In Sme's?, Tony Kealy

Articles

As a member state of the European Union (EU), Ireland has adopted an energy policy which includes promoting wind powered electricity generators as an economically viable, GHG-reducing, alternative to environmentally damaging fossil-fuel driven electrical generators. This longitudinal, inductive in-depth study investigates the outcomes for the government and other stakeholders involved in a wind turbine project investment by a Small-to-Medium-Enterprise (SME) based in rural Ireland. A case study research methodology is used to acquire and analyse quantitative numerical data from multiple sources including electrical power and energy meters, historical electricity bills and company sustainability reports. The study found that the installation ...


Energy Management System Modeling Of Dc Data Center With Hybrid Energy Sources Using Neural Network, Khalid Althomali, Khalid Althomali 2017 California Polytechnic State University, San Luis Obispo

Energy Management System Modeling Of Dc Data Center With Hybrid Energy Sources Using Neural Network, Khalid Althomali, Khalid Althomali

Master's Theses and Project Reports

As data centers continue to grow rapidly, engineers will face the greater challenge in finding ways to minimize the cost of powering data centers while improving their reliability. The continuing growth of renewable energy sources such as photovoltaics (PV) system presents an opportunity to reduce the long-term energy cost of data centers and to enhance reliability when used with utility AC power and energy storage. However, the inter-temporal and the intermittency nature of solar energy makes it necessary for the proper coordination and management of these energy sources.

This thesis proposes an energy management system in DC data center using ...


Ocean Renewable Power Company, James Donegan 2017 Ocean Renewable Power Company

Ocean Renewable Power Company, James Donegan

MARENER 2017

No abstract provided.


Lighting Standards For Ship And Alternative Solutions For Energy Efficiency, Efe Akyurek 2017 Istanbul Technical University

Lighting Standards For Ship And Alternative Solutions For Energy Efficiency, Efe Akyurek

MARENER 2017

Lighting has an important role amongst human life. In this respect, an adequate lighting on board gives moral, motivation also helps to improve safety and security for ships’ crew. This paper aims to both determine an adequate lighting for crew and bring energy efficiency with optimal lighting considering existing regulations on shipboard lighting. After a brief introduction, on the first part the preferred lighting tendencies to be discussed at maritime regulatory base including SOLAS, MLC with comparing ILO 92/133 Conventions. The second part initially defines optimal lighting for crew accommodation and working areas with demonstrating an example on a ...


Overcoming The Challenges To Maritime Energy Efficiciency In The Caribbean Region, Deniece Aiken 2017 Caribbean Maritime Institute

Overcoming The Challenges To Maritime Energy Efficiciency In The Caribbean Region, Deniece Aiken

MARENER 2017

Maritime energy efficiency in the Caribbean appears to be predicated on two key requirements; regulatory controls over the vessels operating in the region and the availability and use of efficient technology. While many Caribbean territories have ratified MARPOL AnnexVI, implementation of the standards therein, presents challenges that are familiar to maritime administrators of the region. These challenges include insufficient resources and inadequate implementation of relevant standards. These issues have traditionally plagued the region. The paucity of data and monitoring in this part of the world also contributes to ineffective policy interventions. There is also a need to identify the gap ...


The Law Of Conservation Of Energy Towards Defining Maritime Cluster Dynamics, Peter J. Stavroulakis, Stratos Papadimitriou, Ioannis Koliousis 2017 University of Piraeus

The Law Of Conservation Of Energy Towards Defining Maritime Cluster Dynamics, Peter J. Stavroulakis, Stratos Papadimitriou, Ioannis Koliousis

MARENER 2017

Industrial clusters have for many decades been considered as the stepping stone for regional and national competitiveness, due to the fact that within these systems of economies, many propitious qualities seem to flourish. Competition and cooperation are witnessed to complement one another, firms can thrive through the marvels of knowledge creation and innovation, and positive externalities are seen to blossom into an interconnected system of collective prosperity. This system bears semblance to many occurrences in nature, and thus can guide the reflection of natural dynamics that may pave an industrial cluster’s threads. Maritime clusters in particular, are distinct vanguards ...


Costs And Benefits Of Lng Economic Development In The Baltic And Arctic Regions, Fabio Ballini, Lawrence Kuroshi 2017 World Maritime University

Costs And Benefits Of Lng Economic Development In The Baltic And Arctic Regions, Fabio Ballini, Lawrence Kuroshi

MARENER 2017

Global warming is becoming increasingly evident. However, rising temperatures also offer new economic opportunities, such as new maritime routes in previously ice-locked waters. Valuable minerals in the Arctic region are also becoming more accessible. Maritime stakeholders are therefore seeking to operate in this remote region safely and efficiently. Accommodating these developments from a regulatory standpoint, IMO has amended the International Convention for the Prevention of Pollution from Ships (MARPOL) to include Chapter 9 of Annex I, prohibiting the use of heavy-grade marine fuels as well as heavy-duty oils as cargo carriage in the seas beyond 60th parallel south. In addition ...


Energy Consumption Of Small Scale Fishing Vessel Operations In Indonesia: A Case Study In Palabuhanratu, Indonesia, Vita R. Kurniawati, Richard W. Birmingham, Alan J. Murphy 2017 Newcastle University, UK

Energy Consumption Of Small Scale Fishing Vessel Operations In Indonesia: A Case Study In Palabuhanratu, Indonesia, Vita R. Kurniawati, Richard W. Birmingham, Alan J. Murphy

MARENER 2017

About 79% of the global fishing fleet is small motorized boats typically operating in coastal areas, supplying local markets, and contributing to human well-being through food supplies and economic development. For example, Indonesian fisheries which predominantly are artisanal fishing, have supported 54% of animal protein intake, accounted for 2% of employment level and increased the fishermen’s prosperity index by 2.44%. However, they cause significant environmental impacts including fish resource depletion and intensive energy use. Balancing the benefits and challenges, sustainably managing these fishing operations is an important yet complex task given the requirements to proportionally account for fish ...


Energy Awareness – Do We Need A Definition In Order To Implement It Onboard?, Signe Jensen 2017 Svendborg International Maritime Academy

Energy Awareness – Do We Need A Definition In Order To Implement It Onboard?, Signe Jensen

MARENER 2017

Energy optimization and the awareness about the issue has become an important topic in the maritime industry. An energy management study from 2015 performed by DNV GL, shows that energy awareness has moved from rank fifteen to be the most important measure to be implemented as a success factor to realize actual savings. However - What exactly is energy awareness, and how can it be defined and implemented? Are Ship Energy Efficiency Management Plans (SEEMP), noon reports and decision support software the right tools to raise awareness and improve energy efficiency for all shipping companies. Previous studies show that smaller shipping ...


Comparison Of Ac And Dc Led Light Bulb Efficiency For The Dc House Project, Brandon Stafford 2017 California Polytechnic State University, San Luis Obispo

Comparison Of Ac And Dc Led Light Bulb Efficiency For The Dc House Project, Brandon Stafford

Electrical Engineering

This project investigates the efficiency of using LED light bulbs when operated under two different electrical systems: AC and DC systems. The project is in conjunction with the implementation of the DC House system in urban areas. More specifically, this project looks at whether having a hybrid AC and DC system in a typical urban house will increase the efficiency in operating the LED light bulbs, and thus reducing energy consumption and cost. The efficiency of the LED light bulbs are measured by looking at their lumens per watt output. Several light bulbs at four different wattage levels were tested ...


Digital Commons powered by bepress