This thesis forms part of a larger study that aims to develop a renewable energy demonstration plant at the Naval Postgraduate School Turbopropulsion Laboratory. The architecture and design approach of the demonstration plant is outlined in this thesis. While all the components of the system are commercially available, the integration of the components is challenging. The results of the design approach presented the optimal way of integrating wind turbines, an electrical system, chiller units, and thermal storage tanks. Modular ice thermal tanks with polypropylene tubing were chosen for storage. The ice thermal storage units were selected over battery storage as they are more cost effective and potentially safer. A statistical analysis was performed using wind data from Monterey Airport, which was beneficial for choosing which wind turbines to implement in the system. The analysis determined that total energy captured by two, 4-kW vertical axis wind turbines was 2,554.8 kW-hours annually. Additionally, ANSYS Fluent was used to analyze the ice growth around the tubing at various ice and tube thicknesses. The ANSYS Fluent analysis showed that ice thickness affects the ice volume growth and change in enthalpy change more than wall thickness affects these conditions.

关键词：能源存储；热性能；冷却；电气设备

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Electronic transformer Manager nature is a will simulation volume transformation for digital volume of device, they will simulation of current and the voltage signal in as possible near signal source of local used most has price of reliable way will its transformation for digital volume,electronic type transformer Manager and merged unit as digital substation of component, and traditional transformer Manager compared to has insulated simple, and dynamic range wide, and anti-saturated performance strong, and Advantages of data output.combined digital substation with IEC61850 in the text, examined issues such as data synchronization of electronic instrument transformers, made recommendations on engineering practice.

关键词：电子变压器；数字化变电站；数据同步；合并单元格

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Free-standing carbon nanotube (CNT) electrodes were developed as suitable light-weight current collectors to effectively incorporate novel cathode nanoparticles towards high energy lithium ion batteries. The use of CNT additives with commercial high capacity lithium rich cathodes was shown to increase areal loadings and specific capacity compared to using carbon black additives. Synthesis of alternative lithium rich cathode active materials exhibited room temperature capacity of 170 mAh/g, and a high temperature capacity of 240 mAh/g. Modeling results indicate that the use of these particles coated onto CNT current collectors can result in battery energy density increases up to 15% (vs. mesocarbon microbead (MCMB)).

关键词：能量密度；轻量级；锂电池

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Mercury cadmium telluride (HgCdTe) alloy is of great importance to infrared sensing, and much of the research and development work is carried out for cooled operations. At ambient temperatures, intrinsic carriers are dominant, resulting in high dark currents. This technical report describes ways to reduce intrinsic carriers in ambient temperatures and, in particular, addresses reducing minority carriers in non-equilibrium operation under reverse biases.

关键词：长波长；汞镉碲化物；光电电池（半导体）；砷

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A thermal energy storage system capable of receiving, absorbing, and collecting solar energy, and storing it within a phase change material, has been designed as part of a power and propulsion system for use in low Earth orbit. The design includes thermophotovoltaic cells for the conversion of stored heat to electrical energy for various satellite systems, as well as a heat exchanger imbedded in the phase change material for propellant heating during thrust maneuvers. Through computational analysis, the likely thrust was evaluated as well as the impact of the propellant flow on the thermal to electric conversion. For the scenario analyzed, a propellant exit temperature of 1500 K, translating to an Isp of 300 seconds, was achieved. Passing the propellant through the phase change material decreases the temperature of the emitter used to power the thermophotovoltaics and resulted in a 20% decrease in electric power output.

关键词：人工卫星；冷气体；地球轨道；电力；储能

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Many sources of fuel are present aboard current spacecraft, with one especially hazardous source of stored energy: lithium ion batteries. Lithium ion batteries are a very hazardous form of fuel due to their self-sustaining combustion once ignited, for example, by an external heat source. Batteries can become extremely energetic fire sources due to their high density electrochemical energy content that may, under duress, be violently converted to thermal energy and fire in the form of a thermal runaway. Currently, lithium ion batteries are the preferred types of batteries aboard international spacecraft and therefore are routinely installed, collectively forming a potentially devastating fire threat to a spacecraft and its crew. Currently NASA is developing a fine water mist portable fire extinguisher for future use on international spacecraft. As its development ensues, a need for the standard evaluation of various types of fire extinguishers against this potential threat is required to provide an unbiased means of comparing between fire extinguisher technologies and ranking them based on performance.

关键词：锂离子电池；能量存储；手提灭火器

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This report is part of an effort by the U.S. Geological Survey to update existing mineral deposit models and to develop new ones. The global transition away from hydrocarbons toward energy alternatives increases demand for many scarce metals. Among these is lithium, a key component of lithium-ion batteries for electric and hybrid vehicles. Lithium (Li) brine deposits account for about three-fourths of the world's lithium production (U.S. Geological Survey, 2011). Updating an earlier deposit model by Asher-Bolinder (1991), we emphasize geologic information that might directly or indirectly help in exploration for lithium brine deposits, or for assessing regions for mineral resource potential. Special attention is given to the best-known deposit in the world - Clayton Valley, Nevada (Kunasz, 1974; Davis and others, 1986; Price and others, 2000; Zampirro, 2004); Munk and others (2011a, b) - and to the giant Salar de Atacama, Chile (Risacher and others, 2003; Lowenstein and Risacher, 2009).

关键词：电池；碳氢化合物；过渡金属化合物

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Energy harvesting is being investigated as an alternative to batteries for powering various Army systems. A piezoelectric system that generates energy from the oscillation of a mass on a spring (set in motion by the launch acceleration) is being developed. Typically, this energy is stored on an electrolytic capacitor for use during flight. Here we investigate a number of electrolytic capacitors and electrochemical double layer capacitors (aka, supercapacitors) for storing this energy. Supercapacitors are of interest, as they are potentially smaller, lighter, and more reliable. Here, we have investigated capacitors of different sizes as well as fast and slow supercapacitors for storing the energy. We find that capacitors of similar size store similar amounts of energy, with a system-dependant optimum size for maximum stored energy, and that the faster capacitors charge more quickly.

关键词：电容器；能量收获；蓄电池

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In order to obtain maximum battery lifetime and efficient operation, rechargeable batteries require unique charging profiles with an end-state, low current trickle charge. The series loaded resonant (SLR) charging system presented in this thesis meets the needs of an efficient, sensor integrated, and galvanically isolated trickle charger. The SLR DC-DC converter was successfully modeled in Simulink, and simulation results are verified in a laboratory application. The Simulink model and hardware are tested at several operating points. Component stresses are quantified and weak points are identified.

关键词：电池充电器；转换器；蓄电池

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NASA's rigorous certification process is being followed for the R2 high voltage battery program for use of R2 on International Space Station (ISS). Rigorous development testing at appropriate levels to credible off-nominal conditions and review of test data led to design improvements for safety at the virtual cell, cartridge and battery levels. Tests were carried out at all levels to confirm that both hardware and software controls work. Stringent flight acceptance testing of the flight battery will be completed before launch for mission use on ISS.

关键词：电动工具；氢气燃料电池；寿命周期成本

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