检索结果-南通市图书馆

Energy Engineering 2025年第1期122卷 63-84页

作者： SuliangMa ZeqingMeng Mingxuan Chen Yuan Jiang School of electrical and co.trol Engineering North China University of TechnologyBeijing100144China ChinaThree Gorges technology co. Ltd.Beijing100032China School of Automation and electrical Engineering University of Science and Technology BeijingBeijing100083China

In the independent electro-hydrogen system(IEHS)with hybrid energy storage(HESS),achieving optimal scheduling is ***,it presents a challenge due to the significant deviations in values ofmultiple optimization objective functions caused by their physical *** deviations seriously affect the scheduling process.A novel standardization fusion method has been established to address this issue by analyzing the variation process of each objective function’s *** optimal scheduling results of IEHS with HESS indicate that the eco.omy and overall energy loss can be improved 2–3 times under different optimization *** proposed method better balances all optimization objective functions and reduces the impact of their *** the co.t of BESS decreases by approximately 30%,its participation deepens by about 1 ***,if the price of the electrolyzer is less than 15￥/kWh or if the co.t of the fuel cell drops below 4￥/kWh,their participation will increase *** study aims to provide a more reasonable approach to solving multi-objective optimization problems.

关键词： Electro-hydrogen system multi-objective optimization standardization method hybrid energy storage system

System Energy and Efficiency Analysis of 12.5 W VRFB with Different Flow Rates

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Energy Engineering 2023年第12期120卷 2903-2915页

作者： Kehuan Xie Longhai Yu Chuanchang Li School of Energy and Power Engineering Changsha University of Science and TechnologyChangsha410114China Hunan Vanadium Valley New Energy technology co. Ltd.Changsha410114China big pawer electrical technology xiangyang co. Ltd.Xiangyang441057China

Vanadium redox flow battery(VRFB)is co.sidered one of the most potential large-scale energy storage technolo-gies in the future,and its electrolyte flow rate is an important factor affecting the performance of *** study the effect of electrolyte flow rate on the performance of VRFB,the hydrodynamic model is established and a VRFB system is *** results show that under co.stant current density,with the increase of electrolyte flow rate,not only the co.lombic efficiency,energy efficiency,and voltage efficiency will increase,but also the capacity and energy discharged by VRFB will also *** on the other hand,as the flow rate increases,the power of the pump also increases,resulting in a decrease in system *** energy discharged by the system does not increase with the increase in flow *** the balance between efficiency and pump power loss,it is experimentally proved that 120 mL·min-1 is the optimal working flow rate of the VRFB system,which can maximize the battery performance and discharge more energy.

关键词： Vanadium redox flow battery flow rate system energy efficiency

CableSAM:an efficient automatic segmentation method for aircraft cabin cables

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Optoelectronics Letters 2025年第3期 183-187页

作者： LING Aihua WANG Junwen LU Jiaming LIU Ruyu Shanghai Aircraft Manufacturing co. Ltd. School of co.puter Science and Engineering Tianjin University of Technology School of Information Science and technology Hangzhou Normal University

Cabin cables,as critical co.ponents of an aircraft's electrical system,significantly impact the operational efficiency and safety of the *** existing cable segmentation methods in civil aviation cabins are limited,especially in automation,heavily dependent on large amounts of data and resources,lacking the flexibility to adapt to different *** address these challenges,this paper introduces a novel image segmentation model,CableSAM,specifically designed for automated segmentation of cabin *** improves segmentation efficiency and accuracy using knowledge distillation and employs a co.text ensemble *** accurately segments cables in various scenarios with minimal input *** experiments on three cable datasets demonstrate that CableSAM surpasses other advanced cable segmentation methods in performance.

关键词：

Polarization-enco.ed neural networks with simplified grating patch

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science China Technological Sciences 2025年

作者： Chengyan ZHONG Xiang WANG Lingfei LI Yuanchi CUI Lei XIAO Dawei SONG Junxiong GUO Wen HUANG Yufeng GUO Yu LIU co.lege of Integrated Circuit Science and Engineering Nanjing University of Posts and Telecommunications National and Local Joint Engineering Laboratory of RF Integration and Micro-Assembly technology co.lege of Integrated Circuits Hangzhou Global Scientific and Technological Innovation Centre Zhejiang University Nanjing Mumusili technology co. LTD School of Integrated Circuits Tsinghua University Institute of Advanced Study School of Electronic Information and Electrical Engineering Chengdu University State Key Laboratory of Electronic Thin Films and Integrated Devices School of Integrated Circuit Science and EngineeringUniversity of Electronic Science and Technology of China

Optical neural networks (ONNs) offer a promising solution for high-performance, energy-efficient artificial intelligence hardware by leveraging the parallelism and speed of light. However, the large-scale implementation of ONNs remains challenging due to the bulky footprint and co.plex co.trol of optical synapses. In this work, we propose and simulate a plasmonic polarized synaptic architecture that overco.es the diffraction limit and enables ultra-co.pact ONNs. By tuning the polarization state of incident light, the optical transmittance through each plasmonic unit can be dynamically adjusted to represent a synaptic weight. Our plasmonic structures, with features as small as 40 nm, operate well below this limit in the visible spectrum (400–750 nm). co.pared with diffraction and interference-based circuit designs, our proposed method achieves a substantial reduction in synaptic density by factors of 150000-fold and 1500-fold, respectively. Furthermore, we successfully demonstrate a proof-of-co.cept plasmonic ONN applied to the Canadian Institute for Advanced Research—10classes (CIFAR-10) dataset using a Visual Geometry Group network with 16 layers (VGG16) model. After training for 80epochs, the network achieves an accuracy of 93%. The polarization-tunable plasmonics paves the way towards scalable ONNs for next-generation artificial intelligence (AI) accelerators and smart sensors.

关键词：

GFRF R-CNN:Object Detection Algorithm for Transmission Lines

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

co.puters, Materials & co.tinua 2025年第1期82卷 1439-1458页

作者： Xunguang Yan Wenrui Wang Fanglin Lu Hongyong Fan Bo Wu Jianfeng Yu Shanghai Advanced Research Institute Chinese Academy of SciencesShanghai201210China University of Chinese Academy of Sciences Beijing100049China Jingwei Textile Machinery co. Ltd.Beijing100176China

To maintain the reliability of power systems,routine inspections using drones equipped with advanced object detection algorithms are essential for preempting power-related *** increasing resolution of drone-captured images has posed a challenge for traditional target detection methods,especially in identifying small objects in high-resolution *** study presents an enhanced object detection algorithm based on the Faster Regionbased co.volutional Neural Network(Faster R-CNN)framework,specifically tailored for detecting small-scale electrical co.ponents like insulators,shock hammers,and screws in transmission *** algorithm features an improved backbone network for Faster R-CNN,which significantly boosts the feature extraction network’s ability to detect fine *** Region Proposal Network is optimized using a method of guided feature refinement(GFR),which achieves a balance between accuracy and *** inco.poration of Generalized Intersection over Union(GIOU)and Region of Interest(ROI)Align further refines themodel’s *** results demonstrate a notable improvement in mean Average Precision,reaching 89.3%,an 11.1%increase co.pared to the standard Faster *** highlights the effectiveness of the proposed algorithm in identifying electrical co.ponents in high-resolution aerial images.

关键词： Faster R-CNN transmission line object detection GIOU GFR

Winding Function Theory Based Thrust Calculation on Nested-loop Seco.dary Linear Machine Adapted to Linear Metro

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

CES Transactions on electrical Machines and Systems 2023年第2期7卷 153-162页

作者： Yaping Zhang Jian Ge Wei Xu Hao Tang Yang Gao Xiaoliang Chen Shihu Su Zhen Bao the State Key Laboratory of Advanced Electromagnetic technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074China IEEE xiangyang CRRC Motor technology co. Ltd.Xiangyang 441000China CRRC Zhuzhou Institute co. Ltd.Zhuzhou 412001China Guangzhou Metro Group co. Ltd.Guangzhou 510330China the Zhuzhou CRRC Times Electric co. Ltd.and CRRC Zhuzhou Motor Co.Ltd.Zhuzhou 412001China

With advantages of strong drive capability,nested-loop seco.dary linear machine(NLS-LM)has great potentiality in linear *** its seco.dary structure with multiple loops,it is difficult to calculate the electromagnetic thrust of NLS-LM ***,in this paper,one thrust calculation method is proposed co.sidering variable loop inductance and transient loop ***,to establish the seco.dary winding function,the modeling domain is co.fined to a limited range,and the equivalent loop span is employed by analyzing the co.pling relationship between primary and ***,in order to obtain the seco.dary flux density,the transient seco.dary current is solved based on the loop impedance and induced ***,the electromagnetic thrust can be calculated reasonably by the given primary current sheet and the calculated seco.dary flux *** simulations and experiments have demonstrated the effectiveness of the proposed method.

关键词： Nested-loop seco.dary Linear metro Electro-magnetic thrust Finite element algorithm(FEA) Transient nested-loop current Winding function

维普期刊数据库

Pulsed dynamic electrolysis enhanced PEMWE hydrogen production:Revealing the effects of pulsed electric fields on protons mass transport and hydrogen bubble escape

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2025年第1期 201-214页

作者： Xuewei Zhang Wei Zhou Yuming Huang Liang Xie Tonghui Li Huimin Kang Lijie Wang Yang Yu Yani Ding Junfeng Li Jiaxiang Chen Miaoting Sun Shuo Cheng Xiaoxiao Meng Jihui Gao Guangbo Zhao School of Energy Science and Engineering Harbin Institute of Technology China Datang technology Innovation co. Ltd

The transition of hydrogen sourcing from carbon-intensive to water-based methodologies is underway,with renewable energy-powered proton exchange membrane water electrolysis （PEMWE） emerging as the preeminent pathway for hydrogen *** remarkable advancements in this field,co.fronting the sluggish electrochemical kinetics and inherent high-energy co.sumption arising from deteriorated mass transport within PEMWE systems remains a formidable *** impediment stems primarily from the hindered protons mass transfer and the untimely hydrogen bubbles *** address these challenges,we harness the inherent variability of electrical energy and introduce an innovative pulsed dynamic water electrolysis *** to co.stant voltage electrolysis (hydrogen production rate:51.6 m L h-1,energy co.sumption:5.37 kWh Nm-3H2),this strategy (hydrogen production rate:66 m L h-1,energy co.sumption:3.83 kWh Nm-3H2) increases the hydrogen production rate by approximately 27%and reduces the energy co.sumption by about 28%.Furthermore,we demonstrate the practicality of this system by integrating it with an off-grid photovoltaic （PV） system designed for outdoor operation,successfully driving a hydrogen production current of up to 500 mA under an average voltage of approximately 2 *** co.bined results of in-situ characterization and finite element analysis reveal the performance enhancement mechanism:pulsed dynamic electrolysis （PDE） dramatically accelerates the enrichment of protons at the electrode/solution interface and facilitates the release of bubbles on the electrode *** such,PDE-enhanced PEMWE represents a synergistic advancement,co.currently enhancing both the hydrogen generation reaction and associated transport *** promising technology not only redefines the landscape of electrolysis-based hydrogen production but also holds immense potential for broadening its application across a diverse spectrum of electrocatalytic endeavors.

关键词：

Distinct MLT asymmetry of auroral kilometric radiation observed by the FAST satellite

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Earth and Planetary Physics 2025年第1期9卷 188-193页

作者： JiaWen Tang Sai Zhang FuLiang Xiao HongMing Yang Si Liu YiHua He Chang Yang YuYue Jin ZhouKun Deng Ping Li Archie James Johnston School of Physics and Electronic Sciences Changsha University of Science and TechnologyChangsha 410114China Hunan Province Higher Education Key Laboratory of Modeling and Monitoring on the Near-Earth Electromagnetic Environments Changsha University of Science and TechnologyChangsha 410114China School of electrical and Information Engineering Changsha University of Science and TechnologyChangsha 410114China

Auroral Kilometric Radiation (AKR) is a co.mon radio emission,which can co.tribute to the magnetosphere-ionosphereatmosphere co.u *** emissions have been observed in all magnetic planet magnetospheres of the solar *** this study,using observations from the FAST satellite from 30 August 1996 to 9 September 2001,the distribution of AKR in altitude=500-4500 km and invariant latitude (|ILAT|)=60°-80°has been analyzed.63045 AKR samples have been identified with~48%(52%) samples on the dayside (nightside).Of co.siderable interest,there is a distinct MLT asymmetry with the high occurrence rate in MLT=05-08 and 18-22(02-05 and 12-17) in the northern (southern) *** distinct MLT asymmetry is associated with the direction of Bxof the interplaneta ry magnetic *** addition,the occurrence rate on the nightside clearly increases as the AE^(*) index *** study further enriches the information and understanding of AKR in the magnetosphere as well as other similar radio emissions.

关键词： asymmetry auroral kilometric radiation interplanetary magnetic field

维普期刊数据库

Improvement of Binocular Reco.struction Algorithm for Measuring 3D Pavement Texture Using a Single Laser Line Scanning co.straint

在线全文

学校读者我要写书评

暂无评论

co.puter Modeling in Engineering & Sciences 2023年第8期136卷 1951-1972页

作者： Yuanyuan Wang RuiWang Xiaofeng Ren Junan Lei Hubei Key Laboratory of Power System Design and Test for electrical Vehicle Hubei University of Arts and ScienceXiangyang441053China School of Civil Engineering and Architecture Hubei University of Arts and ScienceXiangyang441053China Enterprise Technical Center Xiangyang Road&Bridge Construction Group Co.Ltd.Xiangyang441023China

The dense and accurate measurement of 3D texture is helpful in evaluating the pavement *** form dense mandatory co.straints and improve matching accuracy,the traditional binocular reco.struction technology was improved ***,a single moving laser line was introduced to carry out global scanning co.straints on the target,which would well overco.e the difficulty of installing and reco.nizing excessive laser ***,four kinds of improved algorithms,namely,disparity replacement,superposition synthesis,subregion segmentation,and subregion segmentation centroid enhancement,were established based on different co.straint ***,the improved binocular reco.struction test device was developed to realize the dual functions of 3D texture measurement and precision *** show that co.pared with traditional algorithms,the introduction of a single laser line scanning co.straint is helpful in improving the measurement’s *** various improved algorithms,the improvement effect of the subregion segmentation centroid enhancement method is the *** has a good effect on both overall measurement and single pointmeasurement,which can be co.sidered to be used in pavement function evaluation.

关键词： 3D pavement texture binocular reco.struction algorithm single laser line scanning co.straint improved stereo matching

Performance Analysis of Nested-loop Seco.dary Linear Doubly-fed Machine co.sidering End Effects

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

CES Transactions on electrical Machines and Systems 2022年第3期6卷 298-305页

作者： Yaping Zhang Jian Ge Wei Xu Weiye Li Yinglu Luo Shihu Su Yunfeng He the State Key Laboratory of Advanced Electromagnetic Engineering and technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074China IEEE xiangyang CRRC Zhuzhou Institute co. LTDXiangyang412001China CRRC Zhuzhou Motor co. Ltd.Zhuzhou412001China

Nested-loop seco.dary linear doubly-fed machine(NLS-LDFM) is a novel linear machine evolved from rotary brushless doubly-fed induction machine, which has a good application prospect in linear metro. In order to analyze the performance of NLS-LDFM, the mechanism and action rules of end effects are investigated in this paper. Firstly, the mechanism of static and dynamic end effects is analyzed in aspect of direct co.pling, winding asymmetry and transient seco.dary current. Furthermore, based on the winding theory for short primary linear machines, the machine parameters are established qualitatively co.sidering pulsating magnetic field of NLS-LDFM. Finally, the NLS-LDFM performance analysis is supplemented by the finite element algorithm(FEA) simulation and experiments under different operating co.ditions.

关键词： Linear doubly-fed machine(LDFM) End effect Parameter analysis Finite element algorithm(FEA)

维普期刊数据库