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27th International Conference on Electrical Machines and Systems, ICEMS 2024

作者： Gao, Hang Li, Xinmin Gu, Xin Chen, Wei Xia, Changliang School of Control Science and Engineering Tiangong University Tianjin China School of Electrical Engineering Tiangong University Tianjin China Zhejiang University Advanced Electrical Equipment Innovation Center Hangzhou China

ISBN: (纸本)9784886864406

While employing a single current sensor in a brushless dc motor (BLDCM) drive system can significantly reduce costs, it can also introduce the measurement dead-zone problem. To address this problem, this paper analyzes the relationship between DC-link current and phase current under various voltage vectors in Zone II. This paper employs a single DC-link current sensor (SDCS) to sample the DC-link current and reconstruct the phase currents, with the sampling method being free of measurement dead-zone across the entire speed range. For a BLDCM system, whose DC-link consists of a small capacitor and an insulated gate bipolar transistor (IGBT), this paper proposes a SDCS control strategy. The phase current and the actual speed of the motor are used to determine zone division, ensuring the BLDCM system with small capacitance operates reliably. Experimental results demonstrate the effectiveness of the proposed approach. © 2024 The Institute of Electrical Engineers of Japan.

关键词： Insulated gate bipolar transistors (IGBT)

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Inhibitory effect of coriander(Coriandrum sativum L.)extract marinades on the formation of polycyclic aromatic hydrocarbons in roasted duck wings

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Food science and Human Wellness 2023年第4期12卷 1128-1135页

作者： Yajie Yu Yiqun Cheng Chong Wang Suhong Huang Yang Lei Ming Huang Xibin Zhang Key Laboratory of Meat Processing and Quality Control MOEKey Laboratory of Meat ProcessingMOAJiangsu Collaborative Innovation Center of Meat Production and ProcessingQuality and Safety Controland College of Food Science and TechnologyNanjing Agricultural UniversityNanjing 210095China College of Environmental Science&Engineering Institute of Functional FoodAnhui Normal UniversityWuhu 241000China Shandong New Hope Liuhe Group Co.Ltd/Quality Control for Feed and Products of Livestock and Poultry Key Laboratory of Sichuan Province Chengdu 610023China

Coriander(Coriandrum sativum L.)is recognized for its antioxidant property,as a kind of natural phenolic-rich *** aromatic hydrocarbons(PAHs)present a class of heat-driven hazards in foods,especially the processed *** this study,the effect of coriander root and leaf extract on the formation and inhibition of PAH8 in roasted duck wings was firstly *** root extract(CRE)and coriander leaf extract(CLE)with five concentration groups(200,400,600,800,1000 mg/L)were prepared respectively to marinate the duck *** marinade exhibited greater inhibitory effect on PAH8 formation in roasted duck wings that ranged from 65.0%-87.4%.The electron spin resonance study indicated a significantly positive correlation between PAH8 and free radical level,suggesting the participation of radicals in PAHs ***,it was speculated that the inhibitory effect on PAH8 was related to the phenolic compounds identified in coriander *** made greater inhibitory effect on the formation of PAH8 and could be considered as a kind of natural source to mitigate PAHs in heat-processed meat products.

关键词： Polycyclic aromatic hydrocarbons Coriander extract Roast duck Inhibition Radical Phenolic compounds

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Contribution to the knowledge of the ladybird beetle genus Diomus Mulsant (Coleoptera: Coccinellidae), with description of a new species from China

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Zoological Systematics 2024年第4期49卷 320-330页

作者： Keke Bi Xinyue Liang Feng Peng Lizhi Huo Xiaosheng Chen Guangzhou Collaborative Innovation Center on Science-Tech of Ecology and Landscape Guangzhou Institute of Forestry and Landscape ArchitectureGuangzhou 510419China Department of Forest Protection College of Forestry and Landscape ArchitectureSouth China Agricultural UniversityGuangzhou 510640China Engineering Research Center of Biological Control Ministry of EducationGuangzhou 510642China

The genus Diomus Mulsant,1850(Coleoptera:Coccinellidae:Diomini)from China is herein *** species of Diomus are occurring in the Chinese fauna to date,including a new species from the Dafushan Mountains Forest Park,Guangzhou,Guangdong,namely *** Bi,Peng&Chen,*** history,diagnosis,illustrations and distribution were provided for each species.A key to the native species of Diomus from China is also presented.

关键词： Coccinelloidea Guangzhou Diomini Diomus new species

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An optimal flow rate allocation model of the oilfield treated oil pipeline network

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Petroleum 2024年第1期10卷 93-100页

作者： Hai Li Tianyou Fan Kun Wang Xueyuan Long Yu He Meng Wang Wen Cheng Qian Huang Huirong Huang Weichao Yu PetroChina Southwest Oil&Gasfield Company Chengdu 610056China China Petroleum Planning&Engineering Institute Beijing 100083China School of Petroleum Engineering Chongqing University of Science and TechnologyChongqing 401331China PipeChina Oil&Gas Control Center Dongtucheng RoadChaoyang DistrictBeijing 100028China

Oilfield treated oil pipeline network is the link connecting the upstream oilfields and the downstream *** to the differences in operating costs and transportation fee between different pipelines and the fluctuation in the demand and sales prices of the treated oil,there is an optimal flow allocation plan for the pipeline network to make the oilfield company obtain the highest social and economic *** this study,a mixed integer nonlinear programming(MINLP)model is developed to determine the optimal flow rate allocation plan of the large-scale and complex treated oil pipeline network,and both the social and economic benefits are considered *** optimization objective is the multi-objective which includes the largest user satisfaction and the highest economic *** model constraints include the oilfield production capacity,refinery demand,pipeline transmission capacity,flow,pressure,and temperature of the node and station,and the pipeline hydraulic and thermal *** 3.7 is utilized for the programming of the off-line calculation procedure and the MINLP model,and GUROBI 9.0.2 is served as the MINLP ***,the model is applied to a real treated oil pipeline network located in China,and three optimization scenarios are *** social benefit,the values of the user satisfaction of each refinery and the total network are 1 before and after optimization for scenarios 1,2,and *** economic benefit,the annual revenue can be increased by 0.227,0.293,and 0.548 billion yuan after the optimization in scenario 1,2,and 3,respectively.

关键词： Treated oil pipeline network Flow rate allocation Optimal User satisfaction Economic benefit

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Planning of a Single Flow Channel in Valve Blocks Based on Additive Manufacturing and the Ant Colony Algorithm

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Chinese Journal of Mechanical engineering 2024年第5期37卷 191-202页

作者： Jin Zhang Ziyang Li Yuying Zhang Yandong Liu Ying Li Xiangdong Kong School of Mechanical Engineering Yanshan UniversityQinhuangdao 066004China Hebei Provincial Key Laboratory of Heavy Machinery Fluid Power Transmission and Control Qinhuangdao 066004China National&Local Joint Engineering Research Center for Advanced Manufacturing Technology and Equipment Qinhuangdao 066004China State Key Laboratory of Fluid Power and Mechatronic Systems Hangzhou 310027China

As electro-hydrostatic actuator(EHA)technology advances towards lightweight and integration,the demand for enhanced internal flow pathways in hydraulic valve blocks ***,owing to the constraints imposed by traditional manufacturing processes,conventional hydraulic integrated valve blocks fail to satisfy the demands of a more compact channel layout and lower energy ***,the subjectivity in the arrangement of internal passages results in a time-consuming and labor-intensive *** study employed additive manufacturing technology and the ant colony algorithm and B-spline curves for the meticulous design of internal passages within an aviation EHA valve *** layout environment for the valve block passages was established,and path optimization was achieved using the ant colony algorithm,complemented by smoothing using B-spline ***-dimensional modeling was performed using SolidWorks software,revealing a 10.03%reduction in volume for the optimized passages compared with the original *** fluid dynamics(CFD)simulations were performed using Fluent software,demonstrating that the algorithmically optimized passages effectively prevented the occurrence of vortices at right-angled locations,exhibited superior flow characteristics,and concurrently reduced pressure losses by 34.09%-36.36%.The small discrepancy between the experimental and simulation results validated the efficacy of the ant colony algorithm and B-spline curves in optimizing the passage design,offering a viable solution for channel design in additive manufacturing.

关键词： Hydraulic valve block Flow channel B-spline curve Additive manufacturing Ant colony algorithm

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Quantitative evaluation framework and application for regional water sustainability under local energy transition

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Advances in Climate Change research 2023年第6期14卷 976-987页

作者： Lan-Tian ZHANG Ying-Ying LIU Sha CHEN Han-Bing LI Su-Mei LI Ke-Jun JIANG Ji GAO College of Environmental Science and Engineering Key Laboratory of Beijing on Regional Air Pollution ControlBeijing University of TechnologyBeijing 100124China Energy Research Institute Chinese Academy of Macroeconomic ResearchBeijing 100038China Environmental Defense Fund Beijing 100007China

Quantitatively analysing the impacts on regional water sustainability under the energy transition is vital to regional water management and specific technology selection,which is also relevant to dealing with climate *** study proposed a new multi-indicator evaluation framework for regional water sustainability under local energy transition to quantitatively evaluate the water withdrawal and water environment during the energy transition from a lifecycle *** integrated regional energy-water evaluation model was also developed based on the Low Emissions Analysis Platform with a combination of lifecycle assessment and water footprint *** province in China was then taken as a case study,and the impacts of its energy transition on regional water environmental sustainability,including quantity and quality,were investigated under five *** showed that the large-scale application of carbon capture,utilisation and storage technology and bio-energy equipped with carbon capture and storage technology could have additional advantages regarding CO_(2) ***,such technologies exhibit a minimal effect on improving water environmental quality and reducing water demand for the first time due to the leakage of absorbents,CO_(2) and other risky substances during capture,transportation and storage from a lifecycle *** finding drives the innovation of related breakthrough technologies with the promotion of water and end-treatment technologies in the future.

关键词： Water sustainability Energy-water nexus Transition path Spatial and temporal analyses

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D-Shaped Tellurite Photonic Crystal Fiber Hydrogen and Methane Sensor Based on Four-Wave Mixing With SPR Effect

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Photonic Sensors 2023年第1期13卷 25-39页

作者： Hai LIU Bo WU Cong CHEN Benlei ZHAO Xu ZHANG Hancheng ZHANG School of Information and Control Engineering China University of Mining and TechnologyXuzhou 221116China Engineering Research Center of Intelligent Control for Underground Space(Ministry of Education) China University of Mining and TechnologyXuzhou 221116China

A new D-shaped tellurite photonic crystal fiber sensor based on the four-wave mixing(FWM)effect with the surface plasmon resonance(SPR)effect is designed and *** substrate of the D-shaped photonic crystal fiber(D-PCF)is tellurite glass,and the polished surface is plated with the gold film and hydrogen gas-sensitive *** air hole of the inner cladding,which is plated with the gold film and methane gas-sensitive film,is selected as the second sensing channel to simultaneously measure the concentration of hydrogen and *** on the four-wave mixing,the wavelength shifts of the Stokes and anti-Stokes spectra resulting from the variation of the gas concentration can be used to accurately detect the concentrations of methane and ***,it is found that the SPR effect can increase the wavelength shifts,which means the sensitivity of methane and hydrogen *** parameter optimization,the maximum sensitivities of methane and hydrogen are 4.03 nm/%and-14.19 nm/%,*** the linearities are up to 99.9%.The resolution of methane is 1.25×10^(-2)%and hydrogen is 7.14×10^(-3)%.Moreover,the fiber length of this sensor is only 20mm,which is conducive to the construction of a compact or ultra-compact embedded FWM fiber sensor.

关键词： Four-wave mixing surface plasmon resonance D-shaped photonic crystal fiber gas sensing

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A Novel Variable Impedance PM Machines with Separated Fault Tolerant Ring

A Novel Variable Impedance PM Machines with Separated Fault ...

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2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023

作者： Wang, Runyu Fan, Xinggang Li, Dawei Qu, Ronghai Peng, Yongtao Zhao, Xiaopeng Huazhong University of Science and Technology State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Wuhan China Avic Xi'an Flight Automatic Control Research Institute National Key Laboratory of Science and Technology on Aircraft Control Xi'an China

ISBN: (纸本)9798350316445

This paper aims to analyze and design a novel variable impedance permanent magnet (PM) machine with separated fault tolerant ring for high reliability applications. The proposed topology automatically changes from low impedance to ultra-high impedance under turn-to-turn short-circuit without complex fault diagnosis and control strategies. First, the topology of the variable impedance PM machine is introduced. Then, the magnetic field distribution of the separate fault tolerant ring under health and fault is analyzed to qualitatively reveal the fault tolerance principle. Finally, a turn-to-turn short-circuit model considering the core saturation effect is developed for investigating the mechanism of fault tolerance performance improvement. It is found that the short-circuit current and torque ripple after the fault of the variable impedance machines are significantly lower than those of the conventional ones. © 2023 IEEE.

关键词： Permanent magnet machine separated fault tolerant ring turn-to-turn short-circuit variable impedance

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OFF-Board EV Charger Based on Interleaved AC-DC Boost Converter

OFF-Board EV Charger Based on Interleaved AC-DC Boost Conver...

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2024 International Telecommunications Conference, ITC-Egypt 2024

作者： Diab, Noher M. Abdelsalam, Ibrahim Hamad, Mostafa S. Technical Electricity Market Affairs Dep. Cairo Egypt College of Engineering & Technology Arab Academy for Science Technology & MaritimeTransport Electrical and Control Engineering Dep. Cairo Egypt Arab Academy for Science Technology and Maritime Transport Research and Innovation Center Alamein51718 Egypt

ISBN: (纸本)9798350351408

This paper presents an adaptable modular three-phase off-board electric vehicle (EV) fast charger. Each phase of the utility supplies is connected to a single-phase AC-DC module, and the DC output of each module is parallel connected. each AC-DC module is composed of 3-level interleaved boost converters (front-end converter) and galvanic isolation with a single active bridge (back-end converter) with a resonant circuit, to assure soft switching by employing zero voltage transition (ZVT). The proposed control strategy has been implemented to remove the harmonic component and maintain a stable charging current. Besides, keep the power factor close to unity. The proposed EV charger is a suitable fast charging service for EVs in less time with low distortion, less device stress, and an efficient way. MATLAB/SIMULINK Simulation test results of the proposed system are also presented, validating the proposed topology. © 2024 IEEE.

关键词： Resonant circuits

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Scene image recognition with knowledge transfer for drone navigation

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Journal of Systems engineering and Electronics 2023年第5期34卷 1309-1318页

作者： DU Hao WANG Wei WANG Xuerao ZUO Jingqiu WANG Yuanda School of Automation Southeast UniversityNanjing 210096China Autonomous Control Robot Laboratory Jiangsu Zhongke Institute of Applied Research on Intelligent Science and TechnologyChangzhou 213164China Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Nanjing University of Information Science and TechnologyNanjing 210044China

In this paper,we study scene image recognition with knowledge transfer for drone *** divide navigation scenes into three macro-classes,namely outdoor special scenes(OSSs),the space from indoors to outdoors or from outdoors to indoors transitional scenes(TSs),and ***,there are difficulties in how to recognize the TSs,to this end,we employ deep convolutional neural network(CNN)based on knowledge transfer,techniques for image augmentation,and fine tuning to solve the ***,there is still a novelty detection prob-lem in the classifier,and we use global navigation satellite sys-tems(GNSS)to solve it in the prediction *** results show our method,with a pre-trained model and fine tun-ing,can achieve 91.3196%top-1 accuracy on Scenes21 dataset,paving the way for drones to learn to understand the scenes around them autonomously.

关键词： scene recognition convolutional neural network knowledge transfer global navigation satellite systems(GNSS)-aided

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