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13991.新型CMOS电流模式带隙基准
[电力、热力、燃气及水生产和供应业,电气机械和器材制造业] [2015-09-02]
In this paper,a novel BiCMOS current steering bandgap is presented,which includes reference core,start-up circuit,and output circuit,of which the reference core is used to produce the temperature-stable current,the start-up to start up the reference core when powered on,and the output circuit to proportionally transport the reference current to other cells on the same chip.Compared to the traditional voltage-mode bandgap reference,because of the adoption of the current-steering mode,the reference proposed in this paper,has the merits of being immune to variation of the power supply,minimum transport consumption,better matches,temperature stability,smaller area,auto-startup,and so on,which are specially needed in AD/DA application.The simulation shows that the proposed current-mode reference circuit has full temperature range coefficient of 8.9ppm,which is better than that of the traditional voltage-and current-mode reference circuits.
关键词：负反馈；偏差；旁路电容；工作点
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13992.SB8模仿工艺流程研究主要结果
[电力、热力、燃气及水生产和供应业,电气机械和器材制造业] [2015-09-02]
Key technically reviewed results are presented here in support of the Defense Waste Processing Facility (DWPF) acceptance of Sludge Batch 8 (SB8). This report summarizes results from simulant flowsheet studies of the DWPF Chemical Process Cell (CPC). Results include: Hydrogen generation rate for the Sludge Receipt and Adjustment Tank (SRAT) and Slurry Mix Evaporator (SME) cycles of the CPC on a 6,000 gallon basis. Volume percent of nitrous oxide, N2O, produced during the SRAT cycle. Ammonium ion concentrations recovered from the SRAT and SME off-gas. Dried weight percent solids (insoluble, soluble, and total) measurements and density. These items relate to Safety Class (SC) items in HLW-TTR-2012-0004, Rev. 0 as called out in an attachment, a copy of which can be found in Appendix A.
关键词：污泥；放射性废物处理；铵化合物；蒸发器
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13993.锂离子的一维硅/碳阳极孔隙结构
[电气机械和器材制造业,电力、热力、燃气及水生产和供应业] [2015-09-02]
In this report, we Si/C composite with porous and yolk-shell structure, carbon coated mesoporous Fe2O3, C/CuO and S/C composites using aerosol pyrolysis, electrospray and CVD techniques. The electrochemical peroformances of these materials were tested, and the mechanism for long cycling stability and high rate capability of these materials were investigated. The findings were published in top journals. The objectives of this project in the year-two are to develop porous Si/C and C/S composite electrodes for high performance lithium ion batteries and to investigate the mechanism how the porous carbon matrix enhances the cycling stability of Si and S electrodes.
关键词：锂电池；电解质材料；电池结构
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13994.分子束外延（MBE）增长未掺杂GaAs/AlGaAs构成双异质的非辐射寿命的优化（DH）
[电力、热力、燃气及水生产和供应业,电气机械和器材制造业] [2015-09-02]
In this report, we present results of an ongoing study aimed at measuring and optimizing the nonradiative lifetime and the internal radiative quantum efficiency of molecular beam epitaxy (MBE)-grown gallium arsenide (GaAs) solar cells that are grown at the U.S. Army Research Laboratory (ARL) using different substrate growth temperatures and arsenic (As)/gallium (Ga) flux ratios to determine the growth parameters that maximize the bulk GaAs minority carrier nonradiative lifetime. We report a significant increase in the nonradiative lifetime and the internal radiative quantum efficiency of MBE- grown GaAs/aluminum gallium arsenide (AlGaAs) double heterostructure (DH) structures grown at ARL with a growth temperature of 595 C and an As/Ga flux ratio = 15. Our results show that the nonradiative lifetime and internal radiative quantum efficiency of the DH structures grown using these parameters are comparable to those of the highest quality reported MBE-grown GaAs.
关键词：铝镓砷化物；外延生长；量子效率；太阳能电池
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13995.光子晶体太阳能电池的应用
[电气机械和器材制造业,电力、热力、燃气及水生产和供应业] [2015-09-02]
Photonic crystals have been widely applied to improve the efficiency of solar cells due to its capability to manipulate photon transmission.Both theoretical and experimental research have shown that photonic crystals can significantly improve the absorption and conversion efficiency of solar cells.Solar cells that have photonic crystals back reflectors,intermediate reflectors,and window layers have higher photoelectric conversion efficiency.In this paper,the state-of-the-art applications of PCs in solar ceils are summarized.Various fabrication methods for photonic crystals and their associated performance are discussed.
关键词：光子晶体；太阳能电池；吸收；转换效率
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13996.光伏组件资质测试
[电力、热力、燃气及水生产和供应业,电气机械和器材制造业] [2015-09-02]
As the photovoltaic (PV) industry continues to develop, the vast size of deployments today requires optimization of product reliability. The safe operation, requisite service life, reliability, and durability of PV modules become increasingly important as incentives are reduced and the value of an investment in PV is reflected in the kilowatt hours (kWh) generated over the lifetime of the product. Solar electricity can be cost competitive in many electricity markets today (1) if solar panels can perform to warranted specifications for at least the length of their warranty, which is typically 25 years. But, it can be difficult to identify which PV modules will meet their warrantied performance level. Design qualification testing using tests such as IEC 61215 (2) and IEC 61730 (3,4) has been key for achieving high reliability. The continued maintenance of these standards and the development of new standards that address wear-out mechanisms will continue to improve the durability and reliability of products going into the field.
关键词：设计；耐久性；电力；市场；光伏电池
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13997.锂离子电池组的活性能量平衡系统
[电力、热力、燃气及水生产和供应业,电气机械和器材制造业] [2015-09-02]
In this paper,a cell balancing circuit for the Lithium-ion battery pack based on the Flyback topology is proposed.Balancing the lithium-ion battery pack is often employed to improve the energy utilization and lifetime of the battery.The proposed circuit uses the minimized power path to simplify the circuit and optimize the balancing efficiency.This paper shows the details of the balancing circuit structure and working principle,introduce the design of the balancing transformer and its theoretical analysis.Finally,experimental results are presented to verify the theoretical analysis.
关键词：锂离子电池；平衡电路；激拓扑；能量传递
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13998.微流控芯片抽样和采样系统的热室水溶液处理流调查的最新成果，全球2013
[电气机械和器材制造业,电力、热力、燃气及水生产和供应业] [2015-09-02]
A Fuel Cycle Research and Development project has investigated an innovative sampling method that could evolve into the next generation sampling and analysis system for metallic elements present in aqueous processing streams. Initially sampling technologies were evaluated and microfluidics sampling chip technology was selected and tested. A conceptual design for a fully automated microcapillary-based system was completed and a robotic automated sampling system was fabricated. The mechanical and sampling operation of the completed sampling system was investigated. In addition, the production of a less expensive, mass produced sampling chip was investigated to avoid chip reuse thus increasing sampling reproducibility/accuracy. The microfluidic based robotic sampling systems mechanical elements were tested to ensure analytical reproducibility and the optimum robotic handling of microfluidic sampling chips.
关键词：燃料循环；微流控；采样；制造；热电池
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13999.空间应用的锂离子电池热电化学分析新技术
[电气机械和器材制造业,电力、热力、燃气及水生产和供应业] [2015-09-02]
The overall goal of this study was achieved: Replicated the numerical assessment performed by Chen et. al. (2005). Displayed the ability of Thermal Desktop to be coupled with thermo-electrochemical analysis techniques. such that the local heat generated on the cells is a function of the model itself using logic blocks and arrays. Differences in the TD temperature vs. depth of discharge profiles and Chen's was most likely due to differences in two primary areas: Contact regions and conductance values. Differences in density and specific heat values. center dot The model results are highly dependent on the accuracy of the material properties with respect to the multiple layers of an individual cell.
关键词：电动电池；电化学；锂；锂电池
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14000.薄膜材料和加工技术用于新一代光电器件的合作研究和开发，最终报告
[电力、热力、燃气及水生产和供应业,电气机械和器材制造业] [2015-09-02]
Several solution routes to low cost photovoltaic absorber materials have been explored. These routes include different ink chemistries as well as deposition and processing methods. The thin film absorber materials have been integrated into photovoltaic devices.
关键词：薄膜；光伏电池；成本；沉积；油墨
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