Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 29 for “"Diesel-generator"”.
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Hardware simulation of diesel generator and microgrid stability
… A microgrid, a local collection of distributed generators, has the potential to offer a more flexible and customizable power generation system, while significantly improving its effect on the environment. In order to properly deploy and scale microgrids to meet diverse energy needs, there must …
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Efficient Operation of Diesel Generator Sets in Remote Conditions
Diesel engine and generator sets (gensets) have been extensively used for standby and remote power generation over the past hundred years. Due to their use for standby power, these diesel gensets are designed to operate in conjunction with the grid, which relates to a fixed speed operation with a …
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Dynamic Analysis of Diesel-Generator Sets Used in Nuclear Power Plants.
… a computer program for dynamic analysis of diesel-generator sets used in nuclear power plants to supply power to pump motors during accident conditions. First, a mathematical model for each component in a diesel-generator set is developed. Individual models are next combined into one …
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Risk-informed, performance-based regulatory implications of improved emergency diesel generator reliability
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering, 1998.
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Active Minimization of Acoustic Energy Density to Attenuate Radiated Noise from a Diesel Generator
… the tonal and broadband noise radiating from a diesel generator enclosure. The major goal of this research was to show that minimizing the noise within the enclosure can lead to an overall sound pressure level (SPL) reduction of radiated noise. The target levels for overall SPL reduction were at …
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Maintenance practices for emergency diesel generator engines onboard United States Navy Los Angeles class nuclear submarines
… age comes increasing importance of backup generators. In addition to the need for decay heat removal common to all (naval and commercial) nuclear reactors, naval vessels with nuclear reactors also require a backup means of propulsion. All underway Navy nuclear reactors are operated with …
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TRADEOFF ANALYSIS OF BACKUP POWER GENERATION SOLUTIONS FOR MILITARY BASES
… facilities through emergency stand-alone diesel generators. Research has recently indicated that networks of smaller diesel generators offer greater energy security benefits than a network of a few large diesel generators. However, existing research has not compared or analyzed the cost …
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Virtual Inertia Emulation to Improve Dynamic Frequency Stability of Low Inertia Microgrids
… 1 kW virtual inertia in a microgrid with a real diesel generator and a load. For a step change in load, the virtual inertia improved the frequency response of the system from 57.39 Hz to 58.03 Hz. This improvement in frequency response proves the concept of existing proportional derivative based …
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Mobile Hybrid Power System Theory of Operation
… ever increasing. Followed by the introduction of diesel generators, electricity has become available in more locations than ever. However, operating a diesel generator on its own is not the most energy efficient. This is because the high crest factor loads, of many applications, decrease the fuel …
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Modeling and design of a power boosted turbo-compression cooling system
… driven by low-grade waste heat in the shipboard diesel generator set jacket water and lubrication oil and was designed to be a drop-in replacement of electric chiller systems. A case study of a marine diesel generator set and electric chiller is presented, including annual engine loading and …
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Physical modeling of wind turbine generators in a small scale analog system
… micro-grid system, which consists of the grid, a diesel generator, a solar panel, and a wind farm. The hardware work includes the design of a 2.5kW inverter and a L-C-L grid filter (including inductor design and construction). The goal of this research is to better emulate the operation principles …
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The engine reformer : syngas production in engines using spark-ignition and metallic foam catalysts
… One of four cylinders in a Yanmar 4TNV84T marine diesel generator was converted to ignite methane POX mixtures using a spark plug. Intake temperatures > 350 °C were required to minimize misfire. Exhaust H2 to CO ratios of 1.4 were achieved with methane-air equivalence ratios (0m) up to 2.0, while …
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Design of oil consumption measuring system to determine the effects of evolving oil sump composition over time on diesel engine performance and emissions
… that will take effect in the near future. Diesel engine emissions are of particular interest because they are still less understood than gasoline powered internal combustion engines. On the solid side of the exhaust emissions picture, particulates, or Soot and Ash, play the most important …
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Design and modeling of an exhaust gas waste heat autoclave
… waste engine heat from the exhaust system of a diesel generator set to boil water and produce the pressurized steam conditions necessary for effective medical sterilization. Currently, the design utilizes a 0.59 meter, concentric tube cross-flow heat exchanger and high-temperature heat transfer …
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An Approach to Automotive Electrification and Testing
… to a fully electric Powertrain, with a diesel generator, and plug in charging capability. This paper will cover the electrical work performed on the vehicle during the summer prior to year three of the competition, EcoCAR 2 year three, and preliminary work for EcoCAR 3 year one …
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The Electricity Crisis in Nigeria : Building a New Future to Accommodate 20% Renewable Electricity Generation by 2030
… Renewable (HOMER) reveal Small hydro/Solar PV/Diesel generator/Battery design as the most cost-effective combination for power supply in remote/rural areas of Nigeria. Findings also highlight the better performance of this system in terms of fuel consumption and GHGs emission reduction. Lastly, …
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Performance evaluation of photovoltaic and diesel electricity generation applications in the Kruger National Park
… and economic performance of photovoltaic and diesel gensets as off-grid electrical power supply systems. The provision of reliable energy supply infrastructures has been identified as a key pre-requisite for social and economic development. The convenience and versatility of electricity have …
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Energy management system of a microgrid with distributed generation
… of Combined Heat and Power (CHP) plant, Diesel generator, Natural gas-fired generator, Photovoltaic (PV) generator and Wind generator. The EMS is tested for both grid-connected and islanded modes of operation to demonstrate the effectiveness of the optimization algorithms. In grid …
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Impact of System Impedance on Harmonics Produced by Variable Frequency Drives (VFDs)
… it may be necessary to supply the VFD from a Diesel Generator or Uninterruptible Power Supply (UPS). These sources have relatively high impedance when compared to a standard utility source, and will result in greater harmonic voltage distortion. This increases the likelihood of equipment …
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Islanded Wind Energy Management System Based on Neural Networks
… in microgrids. The doubly fed induction generator (DFIG) wind turbine is popular in the wind industry and thus has been researched in this Dissertation. In order to investigate reasons of harmonic generation in wind power systems, a DFIG wind turbine is modeled by using general vector …
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