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International Conference on Electric Power Equipment - Switching Technology

作者： Jae Yeol Kim Hyun Woo Kim Sung Ho Lee Byung Tae Bae Jin Ho Kim Byung Hun Kim Kun Ho Lee Power Systems Performance Unit H.V Switchgear Advanced R&D Team Changwon Korea Power Systems Performance Unit Circuit Breaker Design Team Changwon Korea Power Systems Performance Unit Changwon Korea

ISBN: (纸本)9781467374156

A performance of a high-voltage circuit breaker is mainly dependent on the mechanical efficiency of spring operating mechanism. To predict the performance of the circuit breaker, the analysis of the performance of the circuit breaker is required. In this paper, the analysis model including friction and efficiency of spring was developed to predict a dynamic behavior of circuit breaker. The analysis model was developed by using 1-d based multi-physics tool, the friction and efficiency of spring were measured by using an electric linear actuator, a hydrostatic actuator and a high speed camera. The friction and efficiency of spring were acquired in experiment, the acquired data were applied in analysis model. The simulation results were compared to experimental results in dynamic behavior of circuit breaker. Hence, it is possible to predict the dynamic characteristics of the circuit breaker.

关键词： circuit breaker spring operating mechanism friction force spring efficiency design of experiment

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Medium voltage power converter design and demonstration using 15 kV SiC N-IGBTs

Medium voltage power converter design and demonstration usin...

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Annual IEEE Conference on Applied Power Electronics Conference and Exposition (APEC)

作者： Arun Kadavelugu Krishna Mainali dhaval Patel Sachin Madhusoodhanan Awneesh Tripathi Kamalesh Hatua Subhashish Bhattacharya Sei-Hyung ryu david Grider Scott Leslie NSF FREEDM Systems Center North Carolina State University Raleigh NC USA Department of Electrical Engineering Indian Institute of Technology Madras TN India Power R&D Advanced Devices Cree Inc. Durham NC USA Custom Module Design Powerex Inc. Youngwood PA USA

ISBN: (纸本)9781479967360

This paper summarizes the different steps that have been undertaken to design medium voltage power converters using the state-of-the-art 15 kV SiC N-IGBTs. The 11 kV switching characterization results, 11 kV high dv/dt gate driver validation, and the heat-run test results of the SiC IGBT at 10 kV, 550 W/cm 2 (active area) have been recently reported as individual topics. In this paper, it is attempted to link all these individual topics and present them as a complete subject from the double pulse tests to the converter design, for evaluating these novel high voltage power semiconductor devices. In addition, the demonstration results of two-level H-Bridge and three-level NPC converters, both at 10 kV dc input, are being presented for the first-time. Lastly, the performance of two-chip IGBT modules for increased current capability and demonstration of three-level poles, built using these modules, at 10 kV dc input with sine-PWM and square-PWM modulation for rectifier and dc-dc stages of a three-phase solid state transformer are presented.

关键词： Insulated gate bipolar transistors Silicon carbide Logic gates Switches Heating Inductors Junctions

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The Hyper Suprime-Cam SSP Survey: Overview and Survey design

arXiv

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arXiv 2017年

作者： Aihara, Hiroaki Arimoto, Nobuo Armstrong, robert Arnouts, Stéphane Bahcall, Neta A. Bickerton, Steven Bosch, James Bundy, Kevin Capak, Peter L. Chan, James H.H. Chiba, Masashi Coupon, Jean Egami, Eiichi Enoki, Motohiro Finet, Francois Fujimori, Hiroki Fujimoto, Seiji Furusawa, Hisanori Furusawa, Junko Goto, Tomotsugu Goulding, Andy Greco, Johnny P. Greene, Jenny E. Gunn, James E. Hamana, Takashi Harikane, Yuichi Hashimoto, Yasuhiro Hattori, Takashi Hayashi, Masao Hayashi, Yusuke Helminiak, Krzysztof G. Higuchi, ryo Hikage, Chiaki Ho, Paul T.P. Hsieh, Bau-Ching Huang, Kuiyun Huang, Song Ikeda, Hiroyuki Imanishi, Masatoshi Inoue, Akio K. Iwasawa, Kazushi Iwata, Ikuru Jaelani, Anton T. Jian, Hung-Yu Kamata, Yukiko Karoji, Hiroshi Kashikawa, Nobunari Katayama, Nobuhiko Kawanomoto, Satoshi Kayo, Issha Koda, Jin Koike, Michitaro Kojima, Takashi Komiyama, Yutaka Konno, Akira Koshida, Shintaro Koyama, Yusei Kusakabe, Haruka Leauthaud, Alexie Lee, C.-H. Lin, Lihwai Lin, Yen-Ting Lupton, robert H. Mandelbaum, rachel Matsuoka, Yoshiki Medezinski, Elinor Mineo, Sogo Miyama, Shoken Miyatake, Hironao Miyazaki, Satoshi Momose, rieko More, Anupreeta More, Surhud Moritani, Yuki Moriya, Takashi J. Morokuma, Tomoki Mukae, Shiro Murata, ryoma Murayama, Hitoshi Nagao, Tohru Nakata, Fumiaki Niida, Mana Niikura, Hiroko Nishizawa, Atsushi J. Obuchi, Yoshiyuki Oguri, Masamune Oishi, Yukie Okabe, Nobuhiro Okamoto, Sakurako Okura, Yuki Ono, Yoshiaki Onodera, Masato Onoue, Masafusa Osato, Ken Ouchi, Masami Price, Paul A. Pyo, Tae-Soo Sako, Masao Sawicki, Marcin Shibuya, Takatoshi Shimasaku, Kazuhiro Shimono, Atsushi Shirasaki, Masato Silverman, John d. Simet, Melanie Speagle, Joshua Spergel, david N. Strauss, Michael A. Sugahara, Yuma Sugiyama, Naoshi Suto, Yasushi Suyu, Sherry H. Suzuki, Nao Tait, Philip J. Takada, Masahiro Takata, Tadafumi Tamura, Naoyuki Tanaka, Manobu M. Tanaka, Masaomi Tanaka, Masayuki Tanaka, Yoko Terai, Tsuyoshi Terashima, Yuichi Toba, Yoshiki Tominaga, Nozomu Toshikawa, Jun Turner, Edwin L. Uchida, Tomohisa Uchiyama Department of Physics University of Tokyo Tokyo113-0033 Japan 2-21-1 Osawa MitakaTokyo 181-8588 Japan Subaru Telescope National Astronomical Observatory of Japan 650 N Aohoku Pl HiloHI96720 United States Department of Astrophysical Sciences Princeton University 4 Ivy Lane PrincetonNJ08544 United States CNRS Laboratoire d’Astrophysique de Marseille UMR 7326 Aix Marseille Universit MarseilleF-13388 France Orbital Insight 100 W. Evelyn Ave. Mountain ViewCA94041 United States UTIAS University of Tokyo Chiba277-8583 Japan Department of Astronomy and Astrophysics University of California Santa Cruz 1156 High Street Santa CruzCA95064 United States California Institute of Technology 1200 E. California Blvd. PasadenaCA91125 United States Academia Sinica Institute of Astronomy and Astrophysics P.O. Box 23-141 Taipei10617 Taiwan Department of Physics National Taiwan University Taipei10617 Taiwan Astronomical Institute Tohoku University 6-3 Aramaki Aoba-ku SendaiMiyagi980-8578 Japan Department of Astronomy University of Geneva ch. d’Écogia 16 Versoix1290 Switzerland Steward Observatory University of Arizona 1540 East Second Street TucsonAZ85721-0064 United States Faculty of Business Administration Tokyo Keizai University KokubunjiTokyo185-8502 Japan MEISEI ELECTRIC CO. LTD 2223 Naganuma IsesakiGumma Japan Institute for Cosmic Ray Research University of Tokyo 5-1-5 Kashiwanoha Kashiwa Chiba277-8582 Japan National Astronomical Observatory of Japan 2-21-1 Osawa MitakaTokyo 181-8588 Japan Institute of Astronomy National Tsing Hua University 101 Section 2 Kuang-Fu Road Hsinchu30013 Taiwan Department of Astronomy Graduate School of Science University of Tokyo 7-3-1 Hongo Bunkyo113-0033 Japan Department of Earth Sciences National Taiwan Normal University No.88 Sec. 4 Tingzhou Rd. Wenshan District Taipei11677 Taiwan Department of Astrophysics Nicolaus Copernicus Astronomical Center ul. Rabianska ´ 8 Torun87-100

Hyper Suprime-Cam (HSC) is a wide-field imaging camera on the prime focus of the 8.2m Subaru telescope on the summit of Maunakea in Hawaii. A team of scientists from Japan, Taiwan and Princeton University is using HSC to carry out a 300-night multi-band imaging survey of the high-latitude sky. The survey includes three layers: the Wide layer will cover 1400 deg2 in five broad bands (grizy), with a 5 σ point-source depth of r ≈ 26. The deep layer covers a total of 26 deg2 in four fields, going roughly a magnitude fainter, while the Ultradeep layer goes almost a magnitude fainter still in two pointings of HSC (a total of 3.5 deg2). Here we describe the instrument, the science goals of the survey, and the survey strategy and data processing. This paper serves as an introduction to a special issue of the Publications of the Astronomical Society of Japan, which includes a large number of technical and scientific papers describing results from the early phases of this survey. Copyright © 2017, The Authors. All rights reserved.

关键词： Cams

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Experiment and Simulation of a Coil Spring for the Performance Evaluation of a Gas Insulated circuit Breaker

Experiment and Simulation of a Coil Spring for the Performan...

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International Conference on Electric Power Equipment - Switching Technology

作者： dae Woo Lee Min Soo Kim Jae Yeol Kim Hyun Woo Kim Byung Tae Bae Wan Suk Yoo Jeong Hyun Sohn Department of Mechanical Design Engineering D-BaSE Lab. Pusan Korea Power Systems Performance Unit H. V Switchgear Advanced R&D Team Changwon Korea School of Mechanical Engineering CAE Labortory Pusan Korea

ISBN: (纸本)9781467374156

Since the performance of a circuit breaker which has the spring operating mechanism mainly depends on the dynamic behavior of a coil spring, the analysis of the dynamic behavior of a coil spring is required for a performance evaluation of a circuit breaker. When a spring moves so fast from the releasing state, a lot of energy is used to move a self-weight of a spring. In this study, a release test bed is designed for evaluating the dynamic behaviors of a coil spring. From the release tests, the dynamic behaviors of a coil spring are analyzed. recurdyn is employed to carry out the computer simulation and results are compared with test results. The actual energy transferred to the follower during high-speed motion is analyzed through the comparisons of the kinetic energy between the experiment and the computer simulation.

关键词： gas insulated circuit breaker Spring operating mechanism Coil spring

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26th Annual Computational Neuroscience Meeting (CNS*2017): Part 1

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BMC Neurosci 2017年第SUPPL 1期18卷 58-58页

作者： Sue denham Panayiota Poirazi Erik de Schutter Karl Friston Ho Ka Chan Thomas Nowotny dongqi Han Sungho Hong Sophie rosay Tanja Wernle Alessandro Treves Sarah Goethals romain Brette Tomas Van Pottelbergh rodolphe Sepulchre Alex d. Bird Hermann Cuntz Pedro J. Gonçalves Jan-Matthis Lueckmann Giacomo Bassetto Marcel Nonnenmacher Jakob H. Macke Audrey J. Sederberg Jason N. MacLean Stephanie E. Palmer Ulisse Ferrari Christophe Gardella Olivier Marre Thierry Mora Emina Ibrahimovic Martin Müller Jean-Pascal Pfister Tushar Chauhan Timothée Masquelier Alexandre Montlibert Benoit r. Cottereau Moritz Helias Jannis Schuecker david dahmen Sven Goedeke Alexandre Hyafil Ainhoa Hermoso-Mendizabal Pavel E. rueda-Orozco Santiago Jaramillo david robbe Jaime de la rocha Marie rooy Fani Koukouli david diGregorio Uwe Maskos Boris Gutkin Andrey Yu Verisokin darya V. Verveyko dmitry E. Postnov Willy Wong Omid Talakoub robert Chen Milos Popovic dmitriy Lisitsyn Eric drebitz Iris Grothe Sunita Mandon Andreas Kreiter Udo Ernst Peter A. robinson Xuelong Zhao Kevin M. Aquino John d. Griffiths Grishma Mehta-Pandejee Natasha Gabay James MacLaurin Somwrita Sarkar Tim Kunze Jens Haueisen Thomas r. Knösche Subutai Ahmad Yuwei Cui Marcus Lewis Jeff Hawkins Simona Olmi Spase Petkoski Fabrice Bartolomei Maxime Guye Viktor Jirsa Hazem Toutounji daniel durstewitz Matteo Cantarelli Adrian Quintana Boris Marin Matt Earnshaw Padraig Gleeson robert Court robert Mcdougal r. Angus Silver Salvador dura-Bernal Stephen Larson William W. Lytton Giovanni Idili Lorenzo Posani Simona Cocco Karel Ježek rémi Monasson School of Psychology Faculty of Health & Human Sciences Plymouth University Plymouth Devon PL4 8AA UK Institute of Molecular Biology and Biotechnology (IMBB) Foundation for Research and Technology-Hellas (FORTH) Heraklion Crete Greece Okinawa Institute of Science and Technology Graduate University Okinawa Japan Wellcome Trust Centre for Neuroimaging Institute of Neurology UCL London WC1N 3BG UK School of Engineering and Informatics University of Sussex Brighton BN1 9QJ UK Graduate School Okinawa Institute of Science and Technology Okinawa 904-0495 Japan Computational Neuroscience Unit Okinawa Institute of Science and Technology Okinawa 904-0495 Japan Cognitive Neuroscience Area Scuola Internazionale Superiore di Studi Avanzati Trieste 34136 Italy Kavli Institute for Systems Neuroscience NTNU Trondheim 7030 Norway Institut de la Vision Sorbonne Universités UPMC Univ Paris 06 INSERM CNRS Paris 75012 France Department of Engineering University of Cambridge Cambridge Cambridgeshire CB2 1PZ UK Ernst Strüngmann Institute for Neuroscience Max Planck Society Frankfurt Germany Frankfurt Institute for Advanced Studies Frankfurt Germany Neural Systems Analysis Research Center Caesar An Associate of the Max Planck Society Bonn Germany Max Planck Institute for Biological Cybernetics Tübingen Germany Bernstein Center for Computational Neuroscience Tübingen Germany Present Address: Biomedical Engineering Department Georgia Institute of Technology Atlanta GA 30306 USA Department of Neurobiology University of Chicago Chicago IL 60637 USA Department of Organismal Biology and Anatomy University of Chicago Chicago IL 60637 USA Committee on Computational Neuroscience University of Chicago Chicago IL 60637 USA Institut de la Vision Sorbonne Universités INSERM Paris France Laboratoire de Physique Statistique Ecole Normale Supérieure Paris France Institute of Molecular Life Sciences University of Zürich 8057 Zürich Switzerland Institute of Neuroinformatics Univer

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Utilizing Plating Bar Structure to Enhance Passive Equalizer Compensation Technique

Utilizing Plating Bar Structure to Enhance Passive Equalizer...

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The 15th International Conference on Electronic Packaging Technology (ICEPT 2014) ) (第十五届电子封装技术国际会议)

作者： Chih-Pin Hung Chi-Tsung Chiu Fu-Chen Chu You-Le Lin Hung-Chun Kuo Chen-Chao Wang Tsai-Yun Hsieh Chih-Wen Kuo Sheng-Hua Huang Corporation Design Division Corporate R&DAdvanced Semiconductor Engineering Inc 26 Chin 3rd Rd.Nan Department of Electrical Engineering National Sun Yat-Sen University 70 Lienhai Rd.Kaohsiung 80424

n this paper,an open-stub compesation technique is proposed for passive equalizers used in high-speed digital communication *** simply lumping an open-stub to the conventional rL-type passive equalizer,the frequency-dependent channel loss from the long transmission path can be compensated,the frequency response of the channel becomes more flat and the bandwidth is *** proposed passive equalizer with typical rL passive equalizers,the simulation result shows this technique can improve 1 GHz in the flat region of S21 on a 60cm long differential *** technique is successfully demonstrated the improvement of electrical performance about 57.4%on time domain.

关键词： Passive equalizer open stub eye opening intersymbol interference (ISI) frequence-dependent loss

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A removable signal probing and monitoring solution for gigabit memory ate applications

A removable signal probing and monitoring solution for gigab...

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designCon 2013: Where Chipheads Connect

作者： Moreira, José Mössinger, Marc Bresnan, Tom Takahashi, Masayuki SOC Businesss Unit at Advantest Böblingen Germany R and D Circuits United States Design Department of the Advanced DRAM Design Group at Elpida Sagamihara Japan

ISBN: (纸本)9781627484725

This paper presents an approach for monitoring the signals exchanged between the digital pin electronics of an automated test equipment (ATE) measurement system and a device under test (dUT) for applications running at data rates of 4 Gbps and above. This capability is especially important for bi-directional interfaces like those on a ddr application where it can be of significant help to an ATE test engineer developing an ATE test program for testing/characterizing a dUT. Since the objective is to be able to monitor or probe signals in the 4 Gbps range and above, signal integrity is critical. Because of that, the monitoring approach consists of a very thin printed circuit board (PCB) interposer that is placed between the test fixture PCB and the dUT socket. The probing circuit inside the interposer PCB is implemented using embedded passive components. The connection to the test fixture PCB is done using an elastomeric conductive layer on the bottom of the interposer PCB. We named this PCB interposer a monitoring interposer. This approach not only minimizes the size of the discontinuity generated by the probing circuit but also allows the test engineer to remove the monitoring interposer once it is no longer needed. In this paper we will describe the monitoring interposer concept and also some of the possible probing circuits. We will then use a ddr4 application example to demonstrate the layout challenges and present the results obtained with a manufactured prototype. The results will include not only bench measurements results showing the performance of the monitoring interposer but also measurements obtained on an ATE system using the monitoring interposer together with ddr4 and Gddr5 dUTs.

关键词： Printed circuit boards

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New energy harvesting systems, designed for new piezoelectric transducers, with charging energy management

New energy harvesting systems, designed for new piezoelectri...

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International Conference and Exposition on Electrical and Power Engineering (EPE)

作者： Lucian Pîslaru-dănescu Laurenţiu Constantin Lipan Ioana Pisică Ion daniel Ilina Alina dumitru Department of Efficiency in Energy Conversion and Consumption ICPE-CA Bucharest Romania Faculty of Power Engineering University POLITEHNICA of Bucharest UPB Bucharest Romania Department of Engineering and Design University Brunel of London London United Kingdom Faculty of Electrical Engineering University POLITEHNICA of Bucharest UPB Bucharest Romania Department of Advanced Materials National Institute for R&D in Electrical Engineering ICPE-CA Bucharest Romania

New developments in ultralow power electronic devices can now use much solution to energy harvesting systems designed to interface directly with a piezoelectric transducer. However, these environmental energy sources are typically very low power. recently, a significant number of piezoelectric devices based on lead titanate zirconate (PZTN) have been designed with the purpose of the piezoelectric transducer. At INCdIE ICPECA Bucharest we have realized a piezoelectric transducer for which a PZT+Nb piezoelectric ceramic element was used for low energy source build with piezoelectric circular and linear transducers. due to their dielectric proprieties and small size, (38 mm × 14 mm × 2 mm), the piezoelectric linear transducers can be optimize the energy harvesting systems applications for which the vibration duration is very short. A multiphysics numerical simulation further illustrates such piezoelectric transducer operation. The energy harvesting system is constituted of five functional blocks which are described in this paper.

关键词： Piezoelectric transducers Ceramics Energy harvesting Electrodes Electric potential

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Analysis of directional backlight autostereoscopic display timing crosstalk 49th

Analysis of directional backlight autostereoscopic display t...

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49th SId International Symposium, Seminar and Exhibition, dubbed display Week, 2012

作者： Yung-Yu, Hsieh Jhen-Shen, Liao Hung-Hsiang, Chen Circuit Design Development Department Technology Development Division Module Application & Development General Division R&D Center Chunghwa Picture Tubes LTD. 1127 Heping Rd. Bade CityTaoyuan33409 Taiwan

CPT has successfully developed the 4.8" WVGA 3d display viewed without wearing glasses while can show full-resolution and switching 2d/3d display. Three-dimensional display in the time division is needed for faster frame rates and faster liquid crystal response time. When liquid crystal response time can not demand the LCd fast frame rates, it will produce crosstalk. Therefore, we propose a simple test of picture and methods. © 2012 SId.

关键词： Three dimensional displays

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Application of Selected diffraction with STEM to some materials

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Microscopy and Microanalysis 2012年第S2期18卷 1258-1259页

作者： Suzuki, Yuya Kuroda, Yasushi Kikuchi, Hideki Nakamura, Kuniyasu Global Application Center Hitachi High-Technologies Corpo. Kawasaki Kanagawa 213-0012 Kanagawa Science Park R&D Business Park Bldg C-1F 3-2-1 Sakado Takatsu Japan Advanced Microscope System Design 2nd Department Hitachi High-Technologies Corp. Ibaraki 312-8504 882 Ichige Hitachinaka Japan

Extended abstract of a paper presented at Microscopy and Microanalysis 2012 in Phoenix, Arizona, USA, July 29 – August 2, 2012.

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