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Full-Text Articles in Engineering
Hybrid Wall Outlet For Ac Or Dc Power Delivery, Garrett Knoller, Kerr Allan, Greg Perini
Hybrid Wall Outlet For Ac Or Dc Power Delivery, Garrett Knoller, Kerr Allan, Greg Perini
Electrical Engineering
The goal of this project is to develop hybrid DC and AC wall outlets for an efficient, flexible power interface. A DC plug standard is also proposed to allow DC devices to be safely powered by the outlet with the correct DC voltage for each device. The primary objective is to create a power outlet compatible with the proposed DC plug as well as NEMA 5-15 AC plugs, enabling the same outlet to power both types of load as needed. The outlet is intended for buildings and systems transitioning to an isolated DC grid to encourage DC development and adoption. …
Development Of Cal Poly’S Hybrid Ac/Dc House, Eduardo Andres Muñoz, Giovanni Ramirez Angel
Development Of Cal Poly’S Hybrid Ac/Dc House, Eduardo Andres Muñoz, Giovanni Ramirez Angel
Electrical Engineering
The Hybrid House provides an example for what sustainable housing solutions could look like. It also functions as a potential solution to the current rural electrification issues many developing countries face. The use of a DC-DC MISO converter allows for combining multiple power sources into a single DC bus. The Hybrid House integrates the DC bus by employing the use of DC-DC converters for home use. This system may potentially improve the overall system efficiency by avoiding the losses associated with AC-DC converters. The use of the DC bus further leverages the Solar Panel renewable energy solution to become a …
Hybrid Ac/Dc House: The Road To A Sustainable Future, Nicholas Mcadams, Luis Rodriguez
Hybrid Ac/Dc House: The Road To A Sustainable Future, Nicholas Mcadams, Luis Rodriguez
Electrical Engineering
The Hybrid AC/DC house is a sustainable alternative to preexisting residential power systems. The implementation of a DC bus in current homes will allow inefficient DC-AC and AC-DC conversions to be circumvented. This provides a direct path for current to flow to DC loads from DC sources such as solar panels to minimize power losses. In doing so, this will give users the ability to power their homes strictly from renewable sources and substantially decrease reliance on the utility. For this purpose, the hybrid AC/DC house is also designed in such a way to be entirely grid-independent to provide power …
Hybrid Ac/Dc House, Vinh Q. Tran, Casey Winans, Erin O'Rourke
Hybrid Ac/Dc House, Vinh Q. Tran, Casey Winans, Erin O'Rourke
Electrical Engineering
The Hybrid AC/DC house is a proof of concept implementing a DC bus in residential power systems. The implementation of the DC bus is motivated by efficiency through a direct path for DC sources and loads. The avoidance of DC-to-AC and AC-to-DC conversions used in typical residential systems especially those with DC sources such as solar panels could experience higher efficiencies through only DC-to-DC conversions between the sources and the loads.
Efficiency Optimization Of Miso Converter, Gabriel Leonides, Christopher S. Peters, Lauren N. Rotsios
Efficiency Optimization Of Miso Converter, Gabriel Leonides, Christopher S. Peters, Lauren N. Rotsios
Electrical Engineering
In recent years, there has been a rapidly growing need for sustainable energy sources. This need comes from the increasing threat of climate change, significant population growth, as well as the effort to bring electricity to rural and underdeveloped areas across the world. The DC House project at Cal Poly aims to address these issues. The Multiple Input Single Output (MISO) converter is an integral part of the DC House project. The MISO converter is a system that connects multiple power sources to a DC bus. This allows the DC House to be powered by multiple types of renewable energy …
Analysis And Design Of An Off-Grid Residential Power System, Christopher Rotsios
Analysis And Design Of An Off-Grid Residential Power System, Christopher Rotsios
Master's Theses
This thesis aims to provide a recommended power system design for optimal efficiency, reliability, and cost in off-grid applications. The power system examined in this project is a residence in an off-grid community called Quail Springs that generates its energy from roof mounted solar panels. The existing system was analyzed to see what equipment can remain, what needs to be upsized, and what needs to be added to the system. Two power systems are considered for the residence: a fully AC power system and a hybrid AC/DC power system. Simulations were run in PSCAD to compare the efficiencies of the …
Dc House Smart Pathway Lighting System, Benjamin H. Tan, Rafael Santiago, Brendan Schoemehl
Dc House Smart Pathway Lighting System, Benjamin H. Tan, Rafael Santiago, Brendan Schoemehl
Electrical Engineering
The Student Experimental Farm (SEF) is a two-acre site where students are able to create projects and experiments. It is also the location of the DC House project, a house with electricity provided by DC power as opposed to the traditional AC power. The motive of the DC house project is to provide affordable and renewable electricity for people living in remote areas where ac power grids are not available. Currently, the SEF does not have any lighting, so students would have to work in the dark after the sun sets. By creating a smart lighting system for the pathway …
The Dc House Project: Electrical System Design & Construction, John Bradley
The Dc House Project: Electrical System Design & Construction, John Bradley
Electrical Engineering
This project entails the design and assembly of the photovoltaic system, switchboard panel enclosure, and battery enclosure for the DC House’s main electrical system. The intended purpose of this project is to provide the electrical framework necessary for future students to easily modify and add to this rendition of the DC House. The principle design implements a variety of renewable energy sources, however this senior project only uses solar power in order to maintain a manageable scope. Each of these renewable energy sources are stepped down to a voltage of 24V and input to a Multi Input Single Output DC …
Merry-Go-Round Human Powered Generator, Sarah Lorraine Ashe, Salvador Navarro
Merry-Go-Round Human Powered Generator, Sarah Lorraine Ashe, Salvador Navarro
Electrical Engineering
How do you bring electricity to families who have limited resources in a developing country? The DC House project, advised by Dr. Taufik, provides a way for kids to have fun, exercise and generate power for their homes – play-park human powered generators. This project intends to create a more efficient and cost effective way for playground equipment to be implemented for power generation. The redesigned and reconstructed merry-go-round human powered generator converts mechanical energy into electrical energy to power the DC house. This was a fully functioning generator that needed a better voltage gain, as well as, a more …
Human-Powered Swing Generator, Danny Cai, Timothy Lai, Brandon Wong
Human-Powered Swing Generator, Danny Cai, Timothy Lai, Brandon Wong
Electrical Engineering
Many developing countries lack sufficient resources to provide enough electricity for every family to live with a satisfying level of comfort and convenience. Our project proposes a solution that provides families with an alternative access to electricity using a playground swing. This project addresses the design and construction of the Human-Powered Swing Generator, which converts mechanical energy to electrical energy for charging a battery. The charged battery serves as a source of DC energy for potential DC purposes, such as charging a cell phone.
Design Improvement For The Smart Dc Wall Plug, Cory Yee, Haoyan Huang
Design Improvement For The Smart Dc Wall Plug, Cory Yee, Haoyan Huang
Electrical Engineering
The DC smart wall plug is a subsystem within the Cal Poly DC House Project. The previous version faces challenges supplying DC voltage to meet household appliances’ nominal values. Specifically, it can only output the minimum required voltage for DC appliances to operate, resulting in unwanted power loss. In addition, the maximum output voltage is rated at 15V, which is insufficient to power most DC appliances. This design improvement project incorporates NFC technology as a solution to overcome the power loss and a new buck converter configuration to increase the output voltage range. Additionally, the new design introduces short-circuit and …
Portable Nano Hydro Generator For The Dc House Project, Caleb David Fink, Victor Olusoji Ojewole, Christopher Mapua Tan
Portable Nano Hydro Generator For The Dc House Project, Caleb David Fink, Victor Olusoji Ojewole, Christopher Mapua Tan
Electrical Engineering
This Senior Project entails the design and testing processes of the Portable Nano Hydro Generator for the continuing DC House Project. No natural resources should go unused, especially in developing countries where they are found in abundance. Small streams in particular have potential to further Professor Taufik's DC House Project that will provide electricity to 1.6 billion people in the world without access to electricity upon completion. The goal of this project is to create a small portable generator that utilizes the discharge from small streams and convert it into useable electricity that could charge a car battery as an …
Integration Of Pv & Simulated Dc Sources For The Dc House, Arvind Ramesh, Kevin Gingrich, Scott Chau
Integration Of Pv & Simulated Dc Sources For The Dc House, Arvind Ramesh, Kevin Gingrich, Scott Chau
Electrical Engineering
The DC House, an ever improving project, uses only pure DC power which most renewable energy sources generate, from solar to wind power. The DC House and this project expect a donation of photovoltaic modules to supply a constant source of DC power. At the moment, the DC House desperately needs power sources because not only does the house have various loads unaccounted for, but the distribution system to determine proper power flow needs a redesign. The project chose to account for these issues by implementing a solar panel onto the DC House and a power distribution module to have …
Smart Wall Outlet Design And Implementation For The Dc House Project, Kevin Roy Mendoza
Smart Wall Outlet Design And Implementation For The Dc House Project, Kevin Roy Mendoza
Master's Theses
Most everyday AC appliances are designed to operate off of 120V coming from the wall outlet in our homes. This voltage is a standard set from our established infrastructure. Unlike AC devices, DC devices do not have any set standard of voltage they all will run off of. This presents a problem for the DC house as the various loads that will be used will have different required input voltages. One set voltage for a wall outlet will not suffice for the DC House. This Smart Wall Outlet is designed with a DC-DC converter that will have its output voltage …
Improvements To A Bi-Directional Flyback Dc-Dc Converter For Battery System Of The Dc House Project, Michael Wu
Improvements To A Bi-Directional Flyback Dc-Dc Converter For Battery System Of The Dc House Project, Michael Wu
Master's Theses
The DC House project relies primarily on renewable energy sources to provide DC power to the various loads of the house. However, not all renewable sources are capable of providing power at all times of the day. A back-up energy source in the form of a battery storage system must be available to meet the electrical needs of the house. A bi-directional flyback power converter was initially designed to allow a battery to charge from as well as discharge to the 48V bus line of the DC House. The design provided a 35W prototype to demonstrate the converter’s feasibility. Further …
Wind And Hydroelectric Power Simulation For The Dc House Project, Randy Lormand, Christopher Goloskie
Wind And Hydroelectric Power Simulation For The Dc House Project, Randy Lormand, Christopher Goloskie
Electrical Engineering
This project details the design and integration of a wind and hydroelectric power simulation system in correlation with the DC House Project. The simulator uses variable speed drives to rotate a DC motor which then drives a generator to produce output. This output is then regulated using a DC to DC converter which holds the voltage level constant making it easier to interface with other power sources for the house. The test results indicate that the simulator will be able to produce two separate power outputs that will provide at least 70 Watts of power in the acceptable speed range …
Design Of Improved Distribution Panel For The Dc House, Nolan Joksch
Design Of Improved Distribution Panel For The Dc House, Nolan Joksch
Electrical Engineering
The DC House is a humanitarian project intended to provide electricity to rural areas that would benefit from electricity, but are too remote to have access to it. This particular project is to design and construct the feeder box for the electrical distribution system to distribute power to the system as well as protect it. Building an electrical panel that is easily maintained and, above all, safe for the user is key to this project.
Dc House Distribution Panel, Khanh Ho
Dc House Distribution Panel, Khanh Ho
Electrical Engineering
This paper details the process in designing the distribution panel, or circuit breaker box for a DC house. The main purpose of the project is to design a distribution panel that will provide electrical power to the DC house while also providing an electrical system protection through the use of circuit breakers, or fuses. An actual hardware design for the distribution panel was built and tested. The results demonstrate the functionality of the breaker box to supply power to the DC House ensuring safe operation of the DC House.
12 Volt Wall Outlet For The Dc House Project, Dylan Van Lant, Chenxi Zhang
12 Volt Wall Outlet For The Dc House Project, Dylan Van Lant, Chenxi Zhang
Electrical Engineering
The purpose of this project is to build a DC-DC converter for the wall outlet of the DC House. This report focuses on the development of the DC -DC converter, and explains the design process as well as summarize the final results. The proposed system using the Buck or Step Down topology takes input voltage of 48V and output 12V at 100W. Results show the ability of the converter to fulfill such tasks while maintaining efficiency about 90% at all load.
Dc House Model Design And Construction, Mark Cabaj
Dc House Model Design And Construction, Mark Cabaj
Electrical Engineering
Approximately 1.6 billion people currently live without electricity. The only sensible solution to their energy problems is the use of renewable energy in an off-grid, autonomous home which is powered directly by direct current, rather than alternating current coming from a power line, which probably cannot be found nearby. The purpose of this project is to construct a prototype of the DC House. More specifically, this project focuses on the development and construction of the power distribution system of the DC House. The system will be put in place starting from the source side model down to the load side …
Cell Phone Charger For The Dc House Project, Andrew Hefner, Antonio Magdaleno
Cell Phone Charger For The Dc House Project, Andrew Hefner, Antonio Magdaleno
Electrical Engineering
The goal of this project is to create a multiple output cell phone charger for the DC House project. The cell phone charger is essentially a DC-DC converter. The converter takes an input of 48 volts from the outlet in the DC House and decreases the voltage level to 5 volts; the input voltage level of all cellular devices. By designing an isolated flyback converter with initial specification in LTSpice simulation software, a converter was created. By monitoring the input and output voltage and current using the multi-meters and electronic load, we determined the charger to be 71% efficient when …
Retrofitting A Car Alternator For Low-Speed Power Generation, Yuri Carrillo
Retrofitting A Car Alternator For Low-Speed Power Generation, Yuri Carrillo
Electrical Engineering
This report presents the analysis and methods taken to appropriately modify a car alternator to operate as a low speed generator for wind or hydro power generation. A Toyota car alternator taken from a junkyard is characterized via an Open-Circuit test to evaluate its operating specifications. The car alternator is also measured to determine its physical dimensions. The acquired values are used with the generated voltage equation to determine the machine’s unknown rotor values— the product of the rotor winding factor and the number of rotor windings (kfNf). Using the generated voltage equation with the determined machine parameters, the number …
Wind Power Generator Design For The Dc House Project, Evan Lim, Samson Liu
Wind Power Generator Design For The Dc House Project, Evan Lim, Samson Liu
Electrical Engineering
The purpose of this project is to introduce a cost efficient alternative in converting wind into energy for third world countries. Currently there are approximately 1.6 billion people who have limited access to electricity. As part of the DC House project, we hope to develop a solution for them as the use of electricity is becoming an essential part of life. One of the natural energy resources to provide power to the DC House is wind. The components used for the project are a DC motor and DC-DC converter to translate wind into power and produce DC voltage and current, …
Hydro-Electric Generation System For The Dc House Project, Dennis Kwan, Mitchell Krug
Hydro-Electric Generation System For The Dc House Project, Dennis Kwan, Mitchell Krug
Electrical Engineering
This paper focuses on the design, integration, and construction of a system that harnesses energy from flowing water. The system will be used in conjunction with the DC House Project. The proposed system employs a DC generator and DC-DC Boost-converter to provide electricity to the DC House at approximately 200-300W. Results of the testing and measurement show that the goal of the system is feasible, but currently limited. The generator could not output the specified power. Details of the design, along with ideas for further improvement, are presented in this report.