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Principles of high–fidelity, high–density 3–d neural recording

BMC Neuroscience 2014年第1期15卷 1-2页

作者： Caroline Moore-Kochlacs Nancy Kopell Justin P Kinney Ed S Boyden Jorg Scholvin Jacob G Bernstein Scott K Arfin Young Gyu Yoon Graduate Program for Neuroscience Boston University Boston MA 02215 USA McGovern Institute Massachusetts Institute of Technology MA 02139 USA Department of Mathematics and Statistics Boston University Boston MA 02215 USA Media Lab Massachusetts Institute of Technology MA 02139 USA Brain and Cognitive Science Massachusetts Institute of Technology MA 02139 USA Biological Engineering Massachusetts Institute of Technology MA 02139 USA Electrical Engineering and Computer Science Massachusetts Institute of Technology MA 02139 USA

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SIX-PHASE MACHINE DRIVE SYSTEM BASED ON THREE THREE-LEG CONVERTERS

SIX-PHASE MACHINE DRIVE SYSTEM BASED ON THREE THREE-LEG CONV...

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Brazilian Power Electronics Conference

作者： A. C. N. Maia C. B. Jacobina Federal University of Campina Grande (UFCG) Post-Graduate Program in Electrical Engineering - PPgEE - COPELE Electrical Engineering Department (DEE)

ISBN: (纸本)9781479902712

In this paper, a six-phase machine drive system fed by a nine-leg converter is proposed. The drive system is composed of a three three-leg inverters feeding a six-phase induction motor, which is adequate to develop a high power system with voltage rating restrictions. The studied system is compared to the conventional solution and it is demonstrated that the nine-leg converter permits to reduce the harmonic distortion of the machine currents and to decrease the power processed by converter switches. The system model and the PWM strategy are presented. Experimental results demonstrate the feasibility of the proposed system.

关键词： Harmonic Distortion Motor Drive System Ratings of Switches Semiconductor Losses Six-Phase Machine Three-leg Converters

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Real-time load forecasting for demand side management with only a few days of history available

Real-time load forecasting for demand side management with o...

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International Conference on Power engineering, Energy and electrical Drives, POWERENG

作者： Lukas Neusser Luciane Neves Canha Post Graduate Program in Electrical Engineering Federal University of Santa Maria Santa Maria Brazil

The penetration of distributed generation is growing, and today it is not unusual to see at the same site, equipment that consumes energy working side by side with power sources. To manage and optimize the use of every resource, and to avoid unbalances when the system operates near its limits, the need for very short-term load forecasting is inevitable. In this paper, the use of an already known, fast forecast algorithm, based on double seasonal exponential smoothing is proposed. His real-time usability, with only limited historical data are tested, and the mechanism behind to achieve that are explained. Results, the functionality and reliability on a real world system are also presented and discussed, leading to some concluding remarks at the end of the paper.

关键词： Smoothing methods Real-time systems Indexes Load forecasting Demand forecasting Power engineering

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Haze effect removal from image via haze density estimation in optical model

Haze effect removal from image via haze density estimation i...

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作者： Yeh, Chia-Hung Kang, Li-Wei Lee, Ming-Sui Lin, Cheng-Yang Department of Electrical Engineering National Sun Yat-sen University 804 Taiwan Graduate School of Engineering Science and Technology-Doctoral Program Department of Computer Science and Information Engineering National Yunlin University of Science and Technology Yunlin 640 Taiwan Graduate Institute of Networking and Multimedia Department of Computer Science and Information Engineering National Taiwan University Taipei 106 Taiwan

Images/videos captured from optical devices are usually degraded by turbid media such as haze, smoke, fog, rain and snow. Haze is the most common problem in outdoor scenes because of the atmosphere conditions. This paper proposes a novel single image-based dehazing framework to remove haze artifacts from images, where we propose two novel image priors, called the pixel-based dark channel prior and the pixel-based bright channel prior. Based on the two priors with the haze optical model, we propose to estimate atmospheric light via haze density analysis. We can then estimate transmission map, followed by refining it via the bilateral filter. As a result, high-quality haze-free images can be recovered with lower computational complexity compared with the state-of-the-art approach based on patch-based dark channel prior. ©2013 Optical Society of America.

关键词： Pixels

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Modeling and control of the modular multilevel cascade converter based on chopper-cells

Modeling and control of the modular multilevel cascade conve...

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Brazilian Power Electronics Conference, COBEP

作者： B. E. O. B Luna C. B. Jacobina A. C. Oliveira Post-Graduate Program in Electrical Engineering - PPgEE - COPELE Electrical Engineering Department (DEE) Federal University of Campina Grande (UFCG) PB Brazil

This paper presents the modular multilevel cascade converter (MMCC) based on chopper-cells suitable to medium and high voltage systems without line-frequency transformers. This converter is characterized by a modular arm structure composed by cascaded chopper-cells with floating dc capacitors. The arm structure requires average voltage control and voltage-balancing control of the dc capacitors. This paper proposes a continuous model and a control method to achieve rigid and stable voltage control of all the floating dc capacitors under common operating conditions. The validity of the theory is confirmed by computer simulation and experiment.

关键词： Capacitors Voltage control Power harmonic filters Harmonic analysis Equations Pulse width modulation Mathematical model

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A fast space-vector algorithm for common-mode voltage elimination in multilevel converters

A fast space-vector algorithm for common-mode voltage elimin...

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Brazilian Power Electronics Conference, COBEP

作者： Luis G. G. P. de Castro Maurício B. R. Corrêa Cursino B. Jacobina Post-Graduate Program in Electrical Engineering - PPgEE- COPELE Electrical Engineering Department (DEE) Federal University of Campina Grande Campina Grande PB Brazil

This paper presents an approach that allows to apply space-vector modulation strategy to eliminate common-mode voltage in multilevel inverters. The strategy is based on the reduction of the space vector diagram and on the choice of switching states in which the common-mode voltage is zero. Results were obtained with a real-time simulator and an experimental platform of a cascaded inverter up to 11-level shows its effectiveness. The influence of dead-time over the algorithm performance is investigated too.

关键词： Inverters Vectors Switches Modulation Equations Mathematical model Switching frequency

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AC-DC-AC Six-Phase Machine Drive System Based on Single-Phase Bridge Converters

AC-DC-AC Six-Phase Machine Drive System Based on Single-Phas...

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Annual Conference of the IEEE Industrial Electronics Society

作者： Victor F. M. B. Melo Cursino B. Jacobina Nady Rocha Post-Graduate Program in Electrical Engineering - PPgEE - COPELE Electrical Engineering Department - Federal University of Campina Grande - UFCG Federal University of Paraiba - UFPB

ISBN: (纸本)9781479902255

This paper presents an ac-dc-ac reversible six-phase machine drive system. It is composed of single-phase bridge converters connected in series in the grid side and single-phase bridge converters connected at the machine phase terminals. The proposed topology eliminates the input isolation transformers and reduces the power processed by converter switches and the harmonic distortion in the grid side. The model and the control strategy have been developed. Simulation and experimental results are presented.

关键词： Ac-dc-ac converters Six-phase machine drive Series-connected converters

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Erratum to: The whole genome sequence of the Mediterranean fruit fly, Ceratitis capitata (Wiedemann), reveals insights into the biology and adaptive evolution of a highly invasive pest species

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Genome biology 2017年第1期18卷 11页

作者： Alexie Papanicolaou Marc F Schetelig Peter Arensburger Peter W Atkinson Joshua B Benoit Kostas Bourtzis Pedro Castañera John P Cavanaugh Hsu Chao Christopher Childers Ingrid Curril Huyen Dinh HarshaVardhan Doddapaneni Amanda Dolan Shannon Dugan Markus Friedrich Giuliano Gasperi Scott Geib Georgios Georgakilas Richard A Gibbs Sarah D Giers Ludvik M Gomulski Miguel González-Guzmán Ana Guillem-Amat Yi Han Artemis G Hatzigeorgiou Pedro Hernández-Crespo Daniel S T Hughes Jeffery W Jones Dimitra Karagkouni Panagiota Koskinioti Sandra L Lee Anna R Malacrida Mosè Manni Kostas Mathiopoulos Angela Meccariello Monica Munoz-Torres Shwetha C Murali Terence D Murphy Donna M Muzny Georg Oberhofer Félix Ortego Maria D Paraskevopoulou Monica Poelchau Jiaxin Qu Martin Reczko Hugh M Robertson Andrew J Rosendale Andrew E Rosselot Giuseppe Saccone Marco Salvemini Grazia Savini Patrick Schreiner Francesca Scolari Paolo Siciliano Sheina B Sim George Tsiamis Enric Ureña Ioannis S Vlachos John H Werren Ernst A Wimmer Kim C Worley Antigone Zacharopoulou Stephen Richards Alfred M Handler Hawkesbury Institute for the Environment Western Sydney University Sydney Australia. Justus-Liebig-University Giessen Institute for Insect Biotechnology 35394 Giessen Germany. Department of Biological Sciences Cal Poly Pomona Pomona CA 91768 USA. Department of Entomology and Center for Disease Vector Research University of California Riverside Riverside CA 92521 USA. Interdepartmental Graduate Program in Genetics Genomics & Bioinformatics University of California Riverside Riverside CA 92521 USA. Department of Biological Sciences University of Cincinnati Cincinnati OH 45221 USA. Insect Pest Control Laboratory Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture Seibersdorf Vienna Austria. Department of Environmental and Natural Resources Management University of Patras Agrinio Greece. Department of Environmental Biology Centro de Investigaciones Biológicas CSIC 28040 Madrid Spain. Human Genome Sequencing Center Department of Human and Molecular Genetics Baylor College of Medicine 77030 Houston TX USA. National Agricultural Library USDA 20705 Beltsville MD USA. Georg-August-Universität Göttingen Johann-Friedrich-Blumenbach-Institut für Zoologie und Anthropologie 37077 Göttingen Germany. Department of Biology University of Rochester 14627 Rochester NY USA. Department of Biological Sciences Wayne State University 48202 Detroit MI USA. Department of Biology and Biotechnology University of Pavia 27100 Pavia Italy. USDA-ARS Pacific Basin Agricultural Research Center 96720 Hilo HI USA. DIANA-Lab Department of Electrical & Computer Engineering University of Thessaly 382 21 Volos Greece and Hellenic Pasteur Institute 11521 Athens Greece. Department of Entomology University of Illinois at Urbana-Champaign 61801 Urbana IL USA. Department of Biological Sciences Oakland University 48309 Rochester MI USA. Department of Biochemistry and Biotechnology University of Thessaly Larissa Greece. Department of Biology Univer

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OPEN-END WINDING PERMANENT MAGNET SYNCHRONOUS GENERATOR SYSTEM WITH REDUCED CONTROLLED SWITCH COUNT

OPEN-END WINDING PERMANENT MAGNET SYNCHRONOUS GENERATOR SYST...

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Brazilian Power Electronics Conference

作者： Cursino B. Jacobina Nady Rocha Nustenil S. M. L. Marinus Post-Graduate Program in Electrical Engineering - PPgEE - COPELE Electrical Engineering Department (DEE) Federal University of Campina Grande (UFCG) Electrical Engineering Department (DEE) Federal University of Paraiba (UFPB)

ISBN: (纸本)9781479902712

This paper presents an open-end winding permanent magnet synchronous generator system with reduced controlled switch count, which may be applied to Wind Energy Conversion Systems (WECS). The configuration is obtained from the blend of a three-phase controlled rectifier (composed only of controlled switches), a non-controlled rectifier (composed only of diodes) and an open-end winding machine. A detailed model and a PWM control strategy of the systems, including the synchronism technique are presented to ensure the elimination of zero-crossover distortion normally caused by the use of diodes. Simulation and experimental results are also presented.

关键词： Control Power Converter Synchronous Generator

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Three-phase shunt active power filter based on the interconnection of single-phase and three-phase converters

Three-phase shunt active power filter based on the interconn...

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Brazilian Power Electronics Conference, COBEP

作者： A. M. Maciel C. B. Jacobina V. B. Melo E. C. dos Santos E. L. L. Fabrício Instituto Federal da Paraíba PB Brazil Electrical Engineering Department (DEE) Federal University of Camnina Grande (UFCG) Camnina Grande PB Brazil Post-Graduate Program in Electrical Engineering-PPgEE-COPELE Department of Electrical and Computer Engineering IUPUI

This paper presents a topology based on the interconnection of single-phase H-bridge converters and a three-phase converter acting as a shunt active power filter. Contributions for the model, PWM approach and control strategies are presented to the studied converter. As compared to the conventional solution by using just H-bridges converters, the proposed one reduces the number of semiconductor and storage devices while keeping the same characteristics of high number of levels. A comprehensive THD analysis will be considered followed by simulated and experimental outcomes.

关键词： Control systems Topology Capacitors Voltage control Shunts (electrical) Pulse width modulation Integrated circuit interconnections

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