Results 11 to 20 of about 6,834 (170)
Key technologies and bottlenecks of multi-energy complementary DC microgrid for residual coalbed methane drainage in abandoned mine [PDF]
, 2023 In terms of the collaborative utilization of residual energy and space resources in abandoned mines, under the framework of a green low-carbon multi-energy complementary system, a multi-energy complementary DC microgrid integrating wind-solar-gas-storage
Bin LI +7 more
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The study of bidirectional DC-DC converter in the DC microgrid [PDF]
, 2016 作为新能源的有效利用方式之一的直流微电网没有无功功率的损耗，不需要跟踪频率和相位，可靠性和可控性有较大程度的提高，更适合分布式能源的接入和应用。双向DC-DC变换器承担着母线与储能之间能量双向流动的重要作用。同时，它还可以作为直流微电网之间的互联元件，具有十分重要的研究价值。 本文针对全桥拓扑结构的双向DC-DC变换器展开较为深入的研究。 首先，详细分析了在移相控制方式下，双向DC-DC变换器的在降压方向和升压方向的工作原理及零电压开关（ZVS，Zerovoltageswitching）的具体过程 ...
纪承承
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Comprehensive framework for assessing and optimizing existing research networks
Conservation Biology, EarlyView.Abstract Conservation, monitoring, and research networks, or collections of ecological research sites unified under a common mission of data collection or a research mission, are essential infrastructure for understanding large landscapes. However, most networks developed opportunistically over decades rather than through systematic design, creating ...
Alyson East +2 more
wiley +1 more source
, 2019 直流供电与交流供电相比,具有供电效率高、线损少、安全可靠性高等优点,而且方便与光伏发电、蓄电池等直流电源结合,减少逆变损失和逆变器硬件成本,实现电力负荷的移峰填谷,对降低电网装机容量和初投资成本、减少电网低负载运行时间、提高电网效率等具有重要作用,因此直流供电及蓄电与智能微网整合是建筑供电系统的发展方向。本文讨论了建筑直流供电及蓄电系统的优化设计、优化运行策略、直流供电与交流供电的实验对比、仿真对比,并在实际建筑中进行了示范应用,展示了直流供电及蓄电系统的优势。国家重点研发计划项目 ...
孟超 +5 more
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Secondary frequency control of islanded microgrid considering wind and solar stochastics
, 2023 As the high penetration of wind and photovoltaic distributed generation (DG) in the microgrid, the stochastic and low inertia emerge, bringing more challenges especially when the microgrid operates in isolated islands.
Chen, Jikai +4 more
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT The utilization of carbonaceous anodes in electrochemical systems, particularly potassium‐ion batteries (PIBs), remains hindered by sluggish kinetics and modest capacities, which are caused by the intrinsic ion storage mechanisms and constrained interlayer spacings.
HaiSong Chen +7 more
wiley +1 more source
Design and Implementation of the Wechat Online Service Platform Based on .Net [PDF]
, 2015 得益于互联网技术的飞速发展以及智能移动设备在普通民众中的普及，微信作为一款新兴的移动社交即时通讯软件受到了广大用户的欢迎。根据国家工信部最新数据显示，自2011年发布至今，使用微信的中国网民爆发式增长，截至到目前最新数据已经突破六亿，并将继续保持增长。 持续增长的用户，使得随后推出的微信公众服务平台受到了许多政府部门的重视，建立微信在线服务平台的必要性越来越强烈。通过微信在线服务平台的建立有助于抢占舆论阵地、扩大舆论影响力。有助于促进政民互动、有助于加强舆情引导与控制 ...
林耀宗
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, 2015 Ｉｎ ｉｓｌａｎｄｅｄ ｍｉｃｒｏｇｒｉｄｓ，ｔｈｅ ｔｒａｄｉｔｉｏｎａｌ ｗｉｒｅｌｅｓｓ ａｃｔｉｖｅ ｐｏｗｅｒ ｃｏｏｒｄｉｎａｔｅｄ ｃｏｎｔｒｏｌ ｍａｙ ｌｅａｄ ｔｏ ｔｈｅ ｓｔａｔｅ ｏｆ ｃｈａｒｇｅ （ＳＯＣ）ｏｆ ｔｈｅ ｂａｔｔｅｒｙ ｅｎｅｒｇｙ ｓｔｏｒａｇｅ ｓｙｓｔｅｍ （ＢＥＳＳ）ｇｅｔｔｉｎｇ ｂｅｙｏｎｄ ｔｈｅ ｓａｆｅ ｏｐｅｒａｔｉｏｎ ｒｅｇｉｏｎ ｉｆ ｉｍｂａｌａｎｃｅ ｂｅｔｗｅｅｎ ｐｏｗｅｒ ｃｏｎｓｕｍｐｔｉｏｎ ａｎｄ ...
Guerrero, Josep M. +4 more
core +2 more sources
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT In this study, a newly developed seeded electromagnetic confinement directional solidification (EMCDS) technique was employed to fabricate large‐scale TiAl single crystal ingots with a diameter of 32 mm, overcoming the long‐standing size limitations that have hindered their industrial application.
Wei Wang +9 more
wiley +1 more source
基于CNN-Bi-LSTM功率预测的海岛综合能源系统优化调度 [PDF]
, 2023 合理构建海岛综合能源系统对沿海能源清洁化转型意义重大，其优化调度更是实现海岛能源供需平衡的有效途径。为此，提出了一种考虑风光功率预测的海岛综合能源系统优化调度方法。首先，搭建包含氢能设备、海水源热泵、海水淡化装置、波浪能发电装置等新型能源转换设备的系统模型。其次，海上气候多变会导致新能源发电不稳定，故采用含环境变量重要性排序的一维卷积神经网络和双向长短时记忆神经网络（convolutional neural network-bi-directional long short-term memory ...
刘继彦 +4 more
core +1 more source