Results 91 to 100 of about 7,970 (166)
Gaoya dianqi, 2020 针对交流电场无线取能电源取能功率低,难以满足输电线路铁塔在线监测装置的用电需求,对交流电场无线取能电源进行了优化设计。首先,理论分析了取能电源的电路模型,给出了取能功率方程以及影响取能的关键因素;其次,通过有限元软件仿真计算确定了取能极板的形状和尺寸,并通过理论分析与仿真计算优化了放电电路的参数;最后,通过仿真优化计算得到了当耦合电容为15 pF,取能电容为0.1μF,充电电压为200 V时,500Ω的负载能获得25 mW的取能功率,相比于未进行优化的取能电源功率提升了2.5倍 ...
王黎明 +4 more
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等离子体增强热氧化法制备氧化锌纳米棒及其反应机制 [PDF]
, 2018 提出一种等离子体热氧化法,即通过自制的等离子体增强水平管式炉沉积系统,将金属锌箔在氧气与氩气混合气体中放电生成氧化锌纳米棒,并考察了反应温度、氩气与氧气的流量比以及放电电流对生成的氧化锌的形貌和微观结构的影响.结果发现:在反应温度为500℃、氩气与氧气流量比(体积比)为9∶1时,有比较均匀、稳定的氧化锌纳米棒的生成;并且随着电流值不断增大,氧化锌纳米棒变长.此外,还提出了在等离子体条件下合成氧化锌纳米棒的生长机制:金属锌在适当的温度条件下加热,形成锌蒸汽并在锌箔表面凝结成金属颗粒;然后在O2-Ar气氛中,
傅骏驰, 渠亚洲, 程其进, 郭斌
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Guangtongxin yanjiu, 2018 采用双包层掺镱光纤作为增益介质,多模连续泵浦激光二极管作为泵浦源,构造了两级光放大系统;采用电路直接调制的半导体激光器作为种子源,研制了主振荡功率放大结构全光纤化脉冲光纤激光器。对不同脉冲宽度、重复频率下的激光器输出功率特性和二级放大器的增益特性进行了实验研究。在一级泵浦光功率为2 W、二级泵浦光功率为31 W的条件下,通过对种子源直接调制,得到了中心波长为1.06μm、峰值功率为10.4kW、最大平均功率为21.3 W的脉冲激光输出。在900kHz重复频率下具有最高增益16.7dB。实验结果表明 ...
陈圳, 任海兰
doaj
A Market Mechanism for Participation of Electric Vehicles and Disptachable Loads in Distribution System Congestion Management [PDF]
, 2014 Liu, Weijia, Wen, Fushuan, Wu, Qiuwei
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, 2011 低碳经济是以低能耗、高能效、低排放、低污染为基础的经济模式,提高能源开发、生产、输送、转化和利用过程中的效率并且减少能源消耗,以便在经济发展中减少能源使用上的碳排放。低碳产业意味着资源节约型、生态环保型的产业,这些产业通过技术创新和制度创新,实现清洁能源结构和高能源效率 ...
黄俊凌
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High Density Electrochemical Energy Storage via Regenerative Fuels [PDF]
, 2019 The ever-increasing consumption of finite resources of fossil fuels and global environmental concerns have accelerated the efforts to develop efficient and affordable electrochemical energy storage and electricity generation devices.
Chen, George, Lan, Xia
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Optimization Scheduling of Cold-Heat-Electricity Integrated Energy System Under Pumped Storage Gray Start [PDF]
ObjectivesPumped storage units have gray start potential. Integrating this capability with the multi-energy complementary advantages of an integrated energy system (IES) makes it suitable for system recovery under extreme events.
HOU Hui +7 more
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Low-Carbon Economic Scheduling of Integrated Energy System Considering Diversified Utilization of Hydrogen Energy [PDF]
ObjectivesIn the context of “dual-carbon” goals, achieving low-carbon economic operation of integrated energy system (IES) is of paramount importance. However, existing IES models incorporating power-to-gas (P2G) technology often overlook energy losses ...
LI Ji, MA Kai, YUAN Zhi
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Gaoya dianqi, 2010 为了优化介质阻挡放电（DBD）反应器设计,提高放电效率,提出一种针阵列芒刺状棒电极结构。利用电压-电荷Lissajous图形法,研究了光滑铜棒、螺纹铜棒和针阵列芒刺状铜棒电极等反应器电极结构对DBD放电参数的影响。实验结果表明,随着外加激励电压的升高,5种电极结构的放电功率P和平均放电电流Im及周期传输电荷量Q都随之增大。相同激励电压下,针阵列芒刺状棒电极的P、Im、Q值最大。针阵列芒刺状铜棒电极的气隙等效电容Cg随电压的升高呈震荡形式增加,而光滑电极和螺纹电极的Cg随电压的升高呈减小的趋势 ...
周波, 王晓静, 孙才新
doaj
Preparation and Stability Evaluation of Pumpkin Seed Oil Microcapsules Using Pumpkin Seed Protein-Modified Flaxseed Gum as Wall Material [PDF]
Using pumpkin seed oil (PSO) as the core material, pumpkin seed protein nanoparticles (PSP) and modified flaxseed gum (MFG) as the wall materials of microcapsules, pumpkin seed oil microcapsules were prepared by freeze-drying method through different ...
Hongbin WU, Zhanxia LIU
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