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2014 2nd International Conference on Manufacturing engineering and technology for Manufacturing Growth, METMG 2014

作者： Yan, Rong Ge Wang, Xi Feng Zhu, Li Hua Yang, Qing Xin Province-Ministry Joint Key Lab. of Electromagnetic Field and Electrical Apparatus Reliability Hebei University of Technology Tianjin 300130 China Tianjin Key Laboratory of Advanced Technology of Electrical Engineering and Energy Tianjin Polytechnic University Tianjin 300387 China

ISBN: (纸本)9783038350354

An important source of transformer core vibration is magnetostriction of the thin silicon-steel lamination. In the power grid, direct current (DC) may form by solar magnetic storms and DC transmission. Transformer core supersaturation and harmonic increase in current caused by DC bias will intensify magnetostriction and produce additional transformer core vibration. In order to obtain transformer core vibration under DC bias, the magnetization curve and magnetostriction characteristics of thin silicon-steel lamination are measured. Then, this paper establishes a numerical magneto-mechanical strong coupling model including magnetostrictive effect under DC bias for three-phase three-column dry transformers. On the basis of the proposed model, and the measured magnetic characteristics of the thin silicon-steel lamination, transformer core vibration under DC bias and no-load condition has been calculated. In order to verify the proposed model, transformer core vibration under DC bias and no-load condition is studied experimentally. Numerical calculation results together with experimental results confirm the validity of the proposed method. © (2014) Trans Tech Publications, Switzerland.

关键词： Finite element method

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Giant magnetostrictive freezing rain sensor

Giant magnetostrictive freezing rain sensor

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2014 2nd International Conference on Manufacturing engineering and technology for Manufacturing Growth, METMG 2014

作者： Yan, Rong Ge Jia, Yu Long Zhu, Li Hua Yang, Qing Xin Province-Ministry Joint Key Lab. of Electromagnetic Field and Electrical Apparatus Reliability Hebei University of Technology Tianjin 300130 China Tianjin Key Laboratory of Advanced Technology of Electrical Engineering and Energy Tianjin Polytechnic University Tianjin 300387 China

ISBN: (纸本)9783038350354

As a disastrous weather, hazards of freezing rain can not be ignored. The important thing to be solved at present is using advanced technology and material to correctly detect and improve the forecasting ability of freezing rain. Based on the damage of freezing rain and excellent properties of the giant magnetostrictive materials, this paper gives a giant magnetostrictive freezing rain sensor. When there is different thickness of freezing rain, natural frequency of the sensor will change. Resonance is regained by adjusting the frequency of the power. From natural frequency change, the thickness of the freezing rain can be known. Using COMSOL software, modal analysis of different thickness freezing rain for the giant magnetostrictive freezing rain sensor is studied. The results show that there is big difference in natural frequency with difference thickness of freezing rain, which is easy to achieve automatic frequency tracking and monitor. © (2014) Trans Tech Publications, Switzerland.

关键词： Natural frequencies

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Coordinated Optimal Operation of Hybrid Energy Storage in Power System Accommodated High Penetration of Wind Power

Coordinated Optimal Operation of Hybrid Energy Storage in Po...

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International Conference on Electric Utility Deregulation and Restructuring and Power Technologies

作者： Tianmeng Yang Suhua Lou Xiangcheng Zhang Xu Tian Zuoxia Bai State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and Technology Wuhan China Qinghai Province Key Laboratory of Grid-connected Photovoltaic Technology Xining China Economic Institute of Technology Qinghai Province Electric Power Company Xining China

ISBN: (纸本)9781467371070

The variability and nondispatchable nature of wind power presents sustainable challenges for power system's steady operation and security. In order to accommodate high penetration of wind power and increase the utilization rate of renewable resources, a model of hybrid energy storage system consisting of battery energy storage system and pumped storage power station is proposed in this paper, and a coordinated optimal operation method in the power system is presented. Based on the restriction of upper wind power fluctuation rate limit, a determination method of grid-connected wind farm power output is presented, which can improve the scheduling performance of wind power. The power difference between the original wind farm power output and grid-connected wind farm power output is mitigated by BESS due to its quick response capacity. Pumped storage power station is used for peak regulation in power system. The proposed model and operation method are verified on a modified RTS-96 system, the results are presented to prove the feasibility and effectiveness of the proposed model and method.

关键词： hybrid energy storage determination method of grid-connected wind farm power output high penetration of wind power coordinated optimal operation

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Tumor Bioimaging: Morphology-Tailoring of a Red AIEgen from Microsized Rods to Nanospheres for Tumor-Targeted Bioimaging (Adv. Mater. 16/2016)

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advanced materials (Deerfield Beach, Fla.) 2016年第16期28卷 3224页

作者： Yongsheng Li Andong Shao Yao Wang Ju Mei Dechao Niu Jinlou Gu Ping Shi Weihong Zhu He Tian Jianlin Shi Lab of Low-Dimensional Materials Chemistry Key Laboratory for Ultrafine Materials of Ministry of Education School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 P. R. China. Shanghai Key Laboratory of Functional Materials Chemistry Key Laboratory for Advanced Materials and Institute of Fine Chemicals East China University of Science & Technology Shanghai 200237 P. R. China. State Key Lab of Bioreactor Engineering East China University of Science and Technology Shanghai 200237 P. R. China. Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 P. R. China.

Y. Li, W. Zhu, and co-workers develop a convenient and versatile "make-up" strategy to modulate the micro-sized rods of a near-infrared-emissive AIEgen probe integrated into nanospheres via a self-assembly encapsulation process, as presented on page 3187. The obtained nanospheres outperform microrods in terms of brightness, photostability, biocompatibility, tumor-accumulation, and targeting ability, making them perfect bioprobes for tumor-targeted bioimaging.

关键词： bioimaging modulation morphology photostability tumor targeting

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Fundamental research of guide sleeves in 3D weaving composites

Fundamental research of guide sleeves in 3D weaving composit...

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2013 3rd International Conference on advanced Materials and engineering Materials 2013, CAMEM 2013

作者： Wu, Xiao Chuan Shan, Zhong De Liu, Feng Wang, Zheng Advanced Manufacture Technology Center China Academy of Machinery Science and Technology China State Key Lab of Advanced Forming Technology and Equipment of China China Engineering Research Institute of University Science and Technology Beijing China

ISBN: (纸本)9783038350255

In this study, fundamental research, including material selection and structure design of guide sleeves in 3D weaving composites were investigated by three-point bending test, compression test and SEM observation. The results showed that carbon fiber composite guide sleeves had much higher interface bonding strength than titanium alloy guide sleeves, while worse flexural strength. There were three kind of structure design of the guide sleeves that were groove, rough surface and untreated surface. Compared with the structure of untreated surface, guide sleeves with grooves and with rough surface exhibited higher interface bonding strength, due to increasing the contact area between the guide sleeve and resin. But the guide sleeves with rough surface took the advantages of more simple to preparation and lower cost than those with the grooves. Furthermore the structure of groove could damage the flexural behavior of the guide sleeves. © (2014) Trans Tech Publications, Switzerland.

关键词： Surface measurement

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Speed control with vibration suppression of two-inertia servo system based on resonance ratio control

Speed control with vibration suppression of two-inertia serv...

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International Conference on Electrical Machines and Systems (ICEMS)

作者： Ran Cao Shuanghong Wang Jianbo Sun State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and Technology China

ISBN: (纸本)9781479951635

Torsional vibration in flexible servo system with finite stiffness shaft has received increasing attention. This paper presents a method aimed to suppress the vibration in speed response in both motor and load side. Based on resonance ratio control (RRC), we proposed a 4-order luenberger observer to estimate to tortional torque and the motor speed, which performed better than traditional disturbance observer. The coefficient method(CDM) was applied to design the speed P&I controller parameter. The validity of proposed method has been confirmed by simulation results.

关键词： Observers Torque Vibrations Resonant frequency Mathematical model Servomotors

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25th Annual Computational Neuroscience Meeting CNS-2016, Seogwipo City, South Korea, July 2-7, 2016 Abstracts

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BMC NEUROSCIENCE 2016年第1期17卷 1-112页

作者： [Anonymous] Computational Neurobiology Laboratory The Salk Institute for Biological Studies San Diego USA UNIC CNRS Gif sur Yvette France The European Institute for Theoretical Neuroscience (EITN) Paris France ATR Computational Neuroscience Laboratories Kyoto Japan Krembil Research Institute University Health Network Toronto Canada Department of Physiology University of Toronto Toronto Canada Department of Medicine (Neurology) University of Toronto Toronto Canada Department of Physics University of New Hampshire Durham USA Department of Neurophysiology Nencki Institute of Experimental Biology Warsaw Poland Department of Theory Wigner Research Centre for Physics of the Hungarian Academy of Sciences Budapest Hungary Department of Mathematical Sciences KAIST Daejoen Republic of Korea Department of Mathematics University of Houston Houston USA Department of Biochemistry & Cell Biology and Institute of Biosciences and Bioengineering Rice University Houston USA Department of Biology and Biochemistry University of Houston Houston USA Grupo de Neurocomputación Biológica Dpto. de Ingeniería Informática Escuela Politécnica Superior Universidad Autónoma de Madrid Madrid Spain Department of Biological Sciences University of Southern California Los Angeles USA Center for Neuroscience Korea Institute of Science and Technology Seoul South Korea Department of Neurology Albert Einstein College of Medicine Bronx USA Center for Neuroscience KIST Seoul South Korea Department of Neuroscience University of Science and Technology Daejon South Korea Systems Neuroscience Group QIMR Berghofer Medical Research Institute Herston Australia Department of Psychology Yonsei University Seoul South Korea Department of Psychiatry Kyung Hee University Hospital at Gangdong Seoul South Korea Department of Psychiatry Veterans Administration Boston Healthcare System and Harvard Medical School Brockton USA Department of Electrical and Electronic Engineering The University of Melbourne Parkvil

A1 Functional advantages of cell-type heterogeneity in neural circuits Tatyana O. Sharpee A2 Mesoscopic modeling of propagating waves in visual cortex Alain Destexhe A3 Dynamics and biomarkers of mental disorders Mitsuo Kawato F1 Precise recruitment of spiking output at theta frequencies requires dendritic h-channels in multi-compartment models of oriens-lacunosum/moleculare hippocampal interneurons Vladislav Sekulić, Frances K. Skinner F2 Kernel methods in reconstruction of current sources from extracellular potentials for single cells and the whole brains Daniel K. Wójcik, Chaitanya Chintaluri, Dorottya Cserpán, Zoltán Somogyvári F3 The synchronized periods depend on intracellular transcriptional repression mechanisms in circadian clocks. Jae Kyoung Kim, Zachary P. Kilpatrick, Matthew R. Bennett, Kresimir Josić O1 Assessing irregularity and coordination of spiking-bursting rhythms in central pattern generators Irene Elices, David Arroyo, Rafael Levi, Francisco B. Rodriguez, Pablo Varona O2 Regulation of top-down processing by cortically-projecting parvalbumin positive neurons in basal forebrain Eunjin Hwang, Bowon Kim, Hio-Been Han, Tae Kim, James T. McKenna, Ritchie E. Brown, Robert W. McCarley, Jee Hyun Choi O3 Modeling auditory stream segregation, build-up and bistability James Rankin, Pamela Osborn Popp, John Rinzel O4 Strong competition between tonotopic neural ensembles explains pitch-related dynamics of auditory cortex evoked fields Alejandro Tabas, André Rupp, Emili Balaguer-Ballester O5 A simple model of retinal response to multi-electrode stimulation Matias I. Maturana, David B. Grayden, Shaun L. Cloherty, Tatiana Kameneva, Michael R. Ibbotson, Hamish Meffin O6 Noise correlations in V4 area correlate with behavioral performance in visual discrimination task Veronika Koren, Timm Lochmann, Valentin Dragoi, Klaus Obermayer O7 Input-location dependent gain modulation in cerebellar nucleus neurons Maria Psarrou, Maria Schilstra, Neil Davey, Benjamin Torben-Ni

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Optimal design of Interior Permanent Magnet Synchronous Machine for electric spindle

Optimal design of Interior Permanent Magnet Synchronous Mach...

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International Conference on Electrical Machines and Systems (ICEMS)

作者： Zhicheng Pan Kai Yang XuBiao Wei Cheng Zhu Yingli Zhang State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and Technology China

ISBN: (纸本)9781479951635

This paper describes an optimal design process to achieve a high-performance Interior Permanent Magnet Synchronous Machine (IPMSM) for electric spindle, focusing on the torque density and torque ripple. After the design of initial model, some detailed parameters, such as slot-opening width, depth of permanent magnet (PM) and shape of flux-barrier, are optimized. Moreover, in order to reduce the torque ripple, several methods, which include step-skewed rotor method, slot skewing method and auxiliary slot method, are analyzed and discussed, and some comparison of these methods is displayed. The simulation and analysis are accomplished using 2D-FEM. At last, the design of an IPMSM with high torque density and low torque ripple is accomplished. Prototypes will be fabricated to verify the validity of the proposed design.

关键词： Torque Rotors Optimization Shape Reluctance motors Simulation Analytical models

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Fuel Cells: 3D Quantification of Low-Coordinate Surface Atom Density: Bridging Catalytic Activity to Concave Facets of Nanocatalysts in Fuel Cells (Small 46/2016)

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Small 2016年第46期12卷

作者： Ye Xia Xiaoyan Zhong Xiaoxing Ke Gui-Rong Zhang Zhiying Cheng Bo-Qing Xu National Center for Electron Microscopy in Beijing Laboratory of Advanced Materials (MOE) the State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and Engineering Tsinghua University Beijing 100084 China EMAT (Electron Microscopy for Materials Science) University of Antwerp Groenenborgerlaan 171 B-2020 Antwerp Belgium Institute of Microstructure and Property of Advanced Materials Beijing University of Technology Beijing 100124 China Innovative Catalysis Program Key Lab of Organic Optoelectronics & Molecular Engineering Department of Chemistry Tsinghua University Beijing 100084 China

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Design of a novel axial-radial flux permanent magnet motor

Design of a novel axial-radial flux permanent magnet motor

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International Conference on Electrical Machines and Systems (ICEMS)

作者： Xubiao Wei Kai Yang Zhicheng Pan Hongqin Xie Cheng Zhu Yingli Zhang State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and Technology China

ISBN: (纸本)9781479951635

The paper describes the design and construction of a novel axial-radial flux permanent magnet (PM) machine (ARFPMM). The structure presented in the paper combines dual-rotor axial-flux PM motor and radial-flux PM motor, with both axial and radial PMs and a common electromagnetic core. This core built by soft magnetic composite offers the pass for both radial and axial flux. A new technique called fan-ring shaped windings combines the fan-shape and ring-shape winding described in the paper to shorten the end-winding and customized for the machine. A simplified method is presented in the paper to design and optimize the machine, and have been validated with Finite Element Analysis (FEA). Some details on the design and structure of the machine are presented and a 5 KW ARFPMM is designed to discuss the performance and have been validated with Finite Element analysis (FEA).

关键词： Windings Coils Stator cores Magnetic flux Topology Torque

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