共查询到20条相似文献，搜索用时 578 毫秒
1.
再生制动是汽车节能的一项重要举措.目前汽车上常采用的4种再生制动能量储能方式是蓄电池储能、超级电容储能、超高速飞轮储能和液压储能.文章在介绍以上4种储能方式特点的基础上,对比分析了它们的技术参数,总结了当前储能方式的各种方案,并对未来发展趋势进行了预测. 相似文献
2.
电能储存技术的分类及特点 总被引：1，自引：0，他引：1
王光亮 《江西电力职业技术学院学报》2008,21(3)
按照其能量转化形式,对各种电能存储技术做了分类;着重从经济性、技术性、安全可靠性等方面分析了各种电能储存技术的特点和实际应用中需要解决的问题;指出运用电能储存技术同时也是节约能源、保护环境的一项重要措施。 相似文献
3.
自动化立体仓库中库位优化模型研究 总被引：7，自引：0，他引：7
在研究现有自动化立体仓库存储模式的基础上，提出库位优化的思想。根据货物存放最低能量原则，建立了库位优化的数学模型。按该库位优化模型存储货物，不仅节省物资出入库过程的能量消耗，降低立体仓库的运行成本，而且提高物资出入库的节奏。 相似文献
4.
本研究以全钒液流电池储能系统为研究对象,通过电力系统分析综合程序建立了包含能量限制模块的全钒液流电池储能系统模型。综合考虑了储能系统换流器的容量大小、荷电状态等因数,通过仿真分析对比两种控制策略以及模型在不同大小的储能电池中的适用性,验证了理论分析的准确性及模型的工程实用性。仿真结果表明,该模型既能通过限制无功功率传输保证传输的能量不超出换流器容量,又能根据实际有功功率大小调整无功功率上限,充分发挥储能系统的调节作用。 相似文献
5.
Chen Tianmei Jin Yi Lv Hanyu Yang Antao Liu Meiyi Chen Bing Xie Ying Chen Qiang 《天津大学学报(英文版)》2020,26(3):208-217
In the electrical energy transformation process,the grid-level energy storage system plays an essential role in balancing power generation and utilization.Batteries have considerable potential for application to grid-level energy storage systems because of their rapid response,modularization,and flexible installation.Among several battery technologies,lithium-ion batteries(LIBs) exhibit high energy efficiency,long cycle life,and relatively high energy density.In this perspective,the properties of LIBs,including their operation mechanism,battery design and construction,and advantages and disadvantages,have been analyzed in detail.Moreover,the performance of LIBs applied to grid-level energy storage systems is analyzed in terms of the following grid services:(1) frequency regulation;(2) peak shifting;(3) integration with renewable energy sources;and(4) power management.In addition,the challenges encountered in the application of LIBs are discussed and possible research directions aimed at overcoming these challenges are proposed to provide insight into the development of grid-level energy storage systems. 相似文献
6.
王新月 《乐山师范学院学报》2006,21(5):135-137
脂肪是人体内贮存能量的最重要的物质之一,又是运动中能量的一个重要来源,它比糖元的贮量大10倍。一些研究表明,低到中等强度的有氧运动过程中脂肪供能有着重要的作用,尤其是运动持续时间长达3～4h以上时,脂肪供能可以占到总能量代谢的70%～90%之多。人们采用许多手段和方法,以期增加运动时脂肪氧化供能的比例,节省体内糖消耗,提高机体耐力。另一方面,耐力运动又可以适当消耗脂肪,起到减少体内脂肪堆积、预防高脂血症、改善血脂水平的作用。 相似文献
7.
Xiayue Fan Bin Liu Jie Liu Jia Ding Xiaopeng Han Yida Deng Xiaojun Lv Ying Xie Bing Chen Wenbin Hu Cheng Zhong 《天津大学学报(英文版)》2020,26(2):92-103
Grid-level large-scale electrical energy storage(GLEES) is an essential approach for balancing the supply–demand of electricity generation, distribution, and usage. Compared with conventional energy storage methods, battery technologies are desirable energy storage devices for GLEES due to their easy modularization, rapid response, flexible installation, and short construction cycles. In general, battery energy storage technologies are expected to meet the requirements of GLEES such as peak shaving and load leveling, voltage and frequency regulation, and emergency response, which are highlighted in this perspective. Furthermore, several types of battery technologies, including lead–acid, nickel–cadmium, nickel–metal hydride, sodium–sulfur, lithium-ion, and flow batteries, are discussed in detail for the application of GLEES. Moreover, some possible developing directions to facilitate efforts in this area are presented to establish a perspective on battery technology, provide a road map for guiding future studies, and promote the commercial application of batteries for GLEES. 相似文献
8.
Study on performance of a packed bed latent heat thermal energy storage unit integrated with solar water heating system 总被引：1，自引：0，他引：1
NALLUSAMY N. SAMPATH S. VELRAJ R. 《浙江大学学报(A卷英文版)》2006,7(8):1422-1430
INTRODUCTION Efforts of rational and effective energy man-agement, as well as environmental considerations, increase the interest in using renewable energy sources, especially solar energy. Because of discrep-ancy between the energy supply and demand in solar heating applications, a thermal energy storage (TES) device has to be used for the most effective utilization of the energy source. Energy storage combined with solar collectors and photovoltaic systems have been developed over the… 相似文献
9.
刘亚丽 《郧阳师范高等专科学校学报》2014,(3):20-23
碳纳米结构储氢是近几年研究的热门话题.通过对过渡金属Ti掺杂石墨烯、碳纳米管和富勒烯储氢性能分析研究.发现在Ti掺杂碳纳米结构储氢中,它们的储氢能力都达到了大约8wt%左右,满足美国能源部的标准. 相似文献
10.
基于ADVISOR电动汽车的开发和仿真 总被引：1，自引：0，他引：1
基于电动汽车仿真软件ADVISOR,开发了双电机分散驱动轮式电动汽车ELVEC.ELVEC由车身、电动机、能量管理和能量存储(电池组)等模块组成.进行了ELVEC电动汽车的加速性能、爬坡能力、行驶车速和燃料经济性的分析.结果表明,该车具有良好的动力学性能和燃料经济性,适合在低速、频繁启动的市区内行驶.同时,对电动机特性和能量存储(电池组)及能量管理特性进行了仿真分析,得出ELVEC电动汽车的电动机、电池和驱动系统等均具有较高的效率,能源管理系统和模糊逻辑控制在能量的分配、管理上十分有效. 相似文献
11.
以绿色农业应用为背景,融入现代科技设计创新实践教学平台。系统设计了清洁能源系统、能源储存系统、信息采集系统、智能温室控制系统、中央控制系统、人机交互以及云平台应用系统,实现能源自给自足、环境信息采集与存储、无线区域组网、系统信息显示与预警、智能控制等功能。系统内各功能部分,采用独立的模块化设计,易于组装移植,综合性、开放性和扩展性强。有助于培养学生工程实践能力、解决复杂工程问题能力和创新精神。 相似文献
12.
Alec Bodzin 《International Journal of Science Education》2013,35(8):1255-1275
This study investigated urban eighth-grade students’ knowledge of energy resources and associated issues including energy acquisition, energy generation, storage and transport, and energy consumption and conservation. A 39 multiple-choice-item energy resources knowledge assessment was completed by 1043 eighth-grade students in urban schools in two cities in Pennsylvania, USA. Mean scores for the entire assessment measure indicated low conceptual energy knowledge of the eighth-grade students. Subscale means revealed that student understandings of energy resource acquisition, energy generation, storage and transport, and energy consumption and conservation are not satisfactory. Distractor analysis identified many misunderstandings that eighth-grade students hold with regard to energy resources. Findings revealed that students did not have a sound knowledge and understanding of basic scientific energy resources facts, issues related to energy sources and resources, general trends in the US energy resource supply and use, and the impact energy resource development and use can have on society and the environment. Implications for teacher enactment of energy resources curriculum activities are discussed. 相似文献
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14.
随着经济的发展和社会的进步,人们对能源提出了越来越高的要求。寻找新能源已成为当前人类面临的迫切课题。太阳能的清洁性、安全性、资源的广泛性和充足性,使太阳能成为了当今世界最重要的能源之一。本文设计了新型混合储能式太阳能LED照明系统的等效模型及该系统所能实现的主要功能。 相似文献
15.
Xie Zhiyuan Du Liang Lv Xiaojun Wang Qing Huang Jianglei Fu Tianyi Li Shengyue 《天津大学学报(英文版)》2020,26(3):228-235
Interest in the development of grid-level energy storage systems has increased over the years.As one of the most popular energy storage technologies currently available,batteries offer a number of high-value opportunities due to their rapid responses,flexible installation,and excellent performances.However,because of the complexity,multifunctionality,and wide deployment of power grids,trade-offs in battery performance exist,especially when considering economics,environmental effects,and safety.Therefore,establishing a comprehensive assessment of battery technologies is an urgent undertaking.In this work,we present an analysis of rough sets to evaluate the integration of battery systems(e.g.,lead-acid batteries,lithium-ion batteries,nickel/metal-hydrogen batteries,zinc-air batteries,and Na-S batteries) into a power grid.Specifically,technological properties,economic significance,environmental effects,and safety of these battery systems are evaluated on the basis of rough set theory.In addition,some perspectives are provided to promote the development of battery technologies for grid-level energy storage. 相似文献
16.
A power system with proton exchange membrane fuel cells (PEMFC) was designed for thermal underwater glider.Heat generated by PEMFC is used as the propulsion power of the glider,and the electricity is used in the control and sensor system.An electric energy storage system (ESS) is required which possesses high power density with good cycle life.Ultracapacitors which exhibit high power density and cycle life are considered as energy storage devices.Simulations based on a specific voyage condition indicate that ESS with ultracapacitors has positive effects on reducing the output power demand of PEMFC and lightening the power system.Experimental results show that the state of charge (SOC) is related to the capacitance and resistance in ultracapacitor ESS. 相似文献
17.
相变蓄能技术是近年来材料领域新兴的研究热点,该技术对建筑节能、解决能源紧张有着重要的研究价值．文章将硅藻土和膨胀石墨作为吸附基体,吸附适合相变点的石蜡相变材料,制成三元复合相变蓄能材料掺入水泥砂浆中,并以火电厂炉渣代替黄砂作为砂浆中的细骨料,制成轻质高强蓄热地板,同地暖系统相结合,并利用太阳能或者工业废热等清洁能源对相变材料进行间歇式蓄热,以达到节能环保的功效．对制成的相变蓄能地板模型进行热工性能模拟的试验结果表明：相变蓄能地板具有良好的蓄热能力和经济环保效益,可以作为今后南方冬季取暖的一条有效途径,以缓解南方因采用集中供暖而造成能源紧缺的问题． 相似文献
18.
研究了周期系统中电磁场的储能问题以及周期系统中的功率流,为分析周期系统中的各种电磁现象提供了能量守恒的依据. 相似文献
19.
针对降低纯电驱动汽车能耗的问题,以纯电驱动汽车为对象,阐述了再生制动原理,指出再生制动技术对于电动汽车发展的必要性．介绍了再生制动技术,对电动汽车再生制动系统中的储能方式进行了分类与优缺点综述．针对不同电动汽车的运行工况,对再生制动进行了分类,分析了几种典型的再生制动控制策略和实现方法,以及每种控制策略对能量回收的利用率． 相似文献
20.
CHERALATHAN M VELRAJ R. RENGANARAYANAN S. 《浙江大学学报(A卷英文版)》2006,7(11):1886-1895
INTRODUCTION Cool thermal energy storage (CTES) using the latent heat concept as an alternative to sensible heat storage offers a good option because of its high storage density and the nearly constant temperature heat removal characteristics during the discharging cycle. Since the principle of latent cool storage nec- essarily involves a change of state, heat transfer must occur in different modes depending on the state of charging and discharging. During the periods of low cooling dema… 相似文献