Results 71 to 80 of about 78,542 (219)

±800kV单12脉动特高压直流输电工程避雷器布置与换流阀过电压研究

Gaoya dianqi, 2018
研究±800 kV双12脉动特高压直流输电工程避雷器布置方案,基于巴西美丽山工程提出±800 kV单12脉动特高压直流输电工程的避雷器布置方案。进一步研究整流站换流阀过电压、阀避雷器承受的能量和电流,选取交流相间操作冲击、6脉动换流器闭锁和Y/Y换流变阀侧绕组单相接地3种典型故障仿真计算,给出了整流站换流阀最大过电压,阀避雷器的最大能量和最大电流。研究结果为±800 kV单12脉动特高压直流输电工程相关设备的设计、生产和试验提供参考。
范彩云, 张志刚, 任静, 王宇丁, 高仕龙, 刘路路, 司志磊   +6 more
doaj  

Switchable Thermal Mid‐IR Conducting Polymer Antenna Arrays

Advanced Functional Materials, EarlyView.
This study presents switchable mid‐infrared plasmonic resonances in PEDOT antenna arrays. Their optical extinction peaks can be reversibly switched ‘OFF’ and ‘ON’ by tuning the polaronic charge carrier concentration via the polymer's redox state, offering modulation of optical responses in the thermal mid‐infrared range including around 10 µm ...
Pravallika Bandaru, Mohammad Shaad Ansari, Suraya Kazi, Dongqing Lin, Alexander Yu Polyakov, Magnus P. Jonsson   +5 more
wiley   +1 more source

Laser‐Welded Cellulose‐Carbon Nanotube Nanocomposites as a 3D Scaffold of Si Anodes for High‐Performance Lithium‐Ion Batteries

Advanced Functional Materials, EarlyView.
A Si anode comprising entangled networks of cellulose and SWCNT (C‐CNT) nanocomposites as an anode electrode for a high‐performance LIB is realized by fully utilizing the generated microstructure of a novel conductive 3D scaffold via a low‐temperature and eco‐friendly process. Additionally, localized heating via photo‐thermal conversion can be utilized
Boeun Ryu, Younghoon Jung, Hojin Son, Min‐Young Kim, Jinsub Lim, Changhun Yun   +5 more
wiley   +1 more source

基于Midas Gen的±800 kV直流极线RI电容器组抗震性能评估及防风加固研究

Gaoya dianqi
新疆地区高地震带强风沙环境条件对±800 kV直流极限RI电容器组的抗震和抗风性能影响较大，文中以新疆某特高压直流工程换流站±800 kV直流极限RI电容器组为研究对象，采用通用有限元软件Midas Gen进行有限元分析。首先定义材料和截面，建立±800 kV直流极限RI电容器组的Midas Gen模型，然后施加边界条件和载荷工况，仿真分析得到电容器塔架的模态、振型、应力和位移，结果表明±800 kV直流极线RI电容器组满足8度（0.2g）抗震要求。针对新疆地区强风沙环境对电容器塔架位移振动的影响 ...
杨结春, 朱杰鸿, 马维勇
doaj  

基于模拟负载法±800kV换流阀多重阀绝缘试验技术研究

Gaoya dianqi, 2012
针对±800 kV换流阀多重阀绝缘试验因试验回路尺寸大、试验电压高等造成试验实施难度很大的问题,笔者通过采用等效模拟负载模拟部分阀段,试验研究了±800 kV换流阀多重阀的直流电压试验技术、雷电冲击试验技术、操作冲击试验技术。研究表明,此种试验方法是可行的。
张小勇, 李博, 李侠, 行鹏, 李强, 党原, 胡宇, 王建生   +7 more
doaj  

High Entropy Wide‐Bandgap Borates with Broadband Luminescence and Large Nonlinear Optical properties

Advanced Functional Materials, EarlyView.
High‐entropy rare‐earth borates exhibit excellent nonlinear optical and broadband luminescence properties arising from multi‐component doping, chemical disorder, increased configurational entropy, and increased lattice and electronic anharmonicity. This formulation enabled us to obtain a large, environmentally stable single crystal with 3X higher laser‐
Saugata Sarker, Yu Wang, Yongwen Sun, Caeli Benyacko, Saeed S.I. Almishal, Tao Zhou, Zhiyu Zhang, Jadupati Nag, Himirkanti Sarkar, Jeffrey Shallenberger, Hemant Yennawar, Yang Yang, Jon‐Paul Maria, Zhiqiang Mao, Venkatraman Gopalan   +14 more
wiley   +1 more source

Research on Application Reliability of IGBT Device in Non-standard Operating Conditions

Kongzhi Yu Xinxi Jishu, 2016
As for DC link voltage is up to 2 kV, both 3.3 kV and 4.5 kV IGBTs can meet the requirements of real engineering application. For 3.3 kV power devices, normal DC link voltage is configured with the range of 1 500~1 800 V, impacts on the reliability of 3 ...
LIU Wenye, LI Yanyong, YANG Jinfeng, WANG Hongfeng, WANG Liping   +4 more
doaj  

Dense Nanofibrillar Collagen–Silica Hybrids with High Strength and ECM‐Mimetic Tissue Integration

Advanced Functional Materials, EarlyView.
Dense nanofibrillar collagen–silica hybrids are engineered by synchronizing collagen fibrillogenesis with silica condensation, producing printable scaffolds that unexpectedly approach native extracellular matrix organization and strength. These cell‐free constructs guide endogenous cell‐infiltration, enable localized matrix remodeling, and integrate ...
Norein Norein, Shima Tavakoli, Philipp Wolf, Xie Ling, Veronica Rondahl, Klaus Leifer, Gry Hulsart‐Billström, Jöns Hilborn   +7 more
wiley   +1 more source

Vibration characteristics of ± 800 kV converter transformers part Ⅱ: Under load conditions

International Journal of Electrical Power & Energy Systems
As the second part of the investigation on vibration characteristics of ± 800 kV converter transformers, this part focuses on load conditions. A full-load thermal stability test is carried out on 12 YY and YD converter transformers in a converter station.
Menghao Qian, Fanghui Yin, Yao Yuan, Peiyu Jiang, Liming Wang, Linjie Zhao   +5 more
doaj   +1 more source

Trap‐Assisted Transport and Neuromorphic Plasticity in Lead‐Free 2D Perovskites PEA2SnI4

Advanced Functional Materials, EarlyView.
An artificial retina built from lead‐free layered perovskite (PEA)2SnI4 converts light input into a persistent photocurrent and sums successive flashes over time. Micro/nanocrystals integrated on electrodes act as synapse‐like pixels that perform temporal integration directly in hardware. This in‐sensor preprocessing merges detection and computation on
Ofelia Durante, Valeria Demontis, Karl Jonas Riisnaes, Lam Hoi Tung, Sebastiano De Stefano, Daniela Marongiu, Adolfo Mazzotti, Aditya Bhardwaj, Francesco Mattana, Elisa Pili, Selene Matta, Federico Paolucci, Michele Saba, Andrea Mura, Giovanni Bongiovanni, Monica F Craciun, Saverio Russo, Antonio Di Bartolomeo   +17 more
wiley   +1 more source