ARC FLASH HAZARDS ANALYSIS by ZHENYUAN ZHANG Graduate School of The University of Texas at Arlington 2015

ARC FLASH HAZARDS ANALYSIS by ZHENYUAN ZHANG

Presented to the Faculty of the Graduate School of The University of Texas at Arlington in Partial Fulfillment of the Requirements for the Degree of DOCTOR OF PHILOSOPHY THE UNIVERSITY OF TEXAS AT ARLINGTON


Abstract 
ARC FLASH HAZARDS ANALYSIS Zhenyuan Zhang, PhD The University of Texas at Arlington, 2015
 Supervising Professor: Wei-Jen Lee

 Annually more than 2000 workers are admitted to hospital burn centers for extensive injuries caused by arc flash accidents. Arc flash incidents occur when unintended electric current flows through air, superheating the air and causes an explosion. Recognizing the significant threat posed by arc flash hazards, IEEE and NFPA have joined forces on an initiative to support research and additional testing to increase the understanding of the arc flash phenomena. Accurately represent all the real applications for arc flash events are very difficult, not only because of their random complex nature, but also because a large number of uncertain variables involved. Several areas of the arc flash phenomena need further research and testing validation. In order to have a precise arc flash hazards assessment, approximately 2000 arc flash experiments had been conducted, which are crossed extensive range of system voltage, bolted fault current, electrodes gap width, arc initiative configuration and enclosure dimensions. This dissertation has reviewed the testing methodology, test equipment design and modeling process for arc flash hazards analysis. The research and testing focused on, but will not be limited to (a) the development of physics and engineering-based modeling for arc flash thermal hazards, and (b) design and testing for non-thermal hazards, such as light, pressure and sound. Based on the works of the dissertation, sets of assessment equations and approaches have been proposed for arc flash thermal and non-thermal hazard analysis. The results of this dissertation will provide information to help more accurately predict the hazards associated with high energy arcing faults, thereby improving electrical safety standards and providing practical safeguards for employees in the work place.

LINK ORIGINAL
https://uta-ir.tdl.org/uta-ir/bitstream/handle/10106/25513/ZHANG-DISSERTATION-2015.pdf?sequence=1
LINK ALTERNATIVO
http://www.mediafire.com/file/2wbqqd7064st7ei/ZHANG-DISSERTATION-2015.pdf

High-Performance Control of Three-Phase Four- Wire DVR Systems using Feedback Linearization Seon-Yeong Jeong*, Thanh Hai Nguyen**, Quoc Anh Le**, and Dong-Choon Lee†

High-Performance Control of Three-Phase Four- Wire DVR Systems using Feedback Linearization Seon-Yeong Jeong*, Thanh Hai Nguyen**, Quoc Anh Le**, and Dong-Choon Lee† *Department of Research and Development, T.E.C.C. Co. Ltd., Daegu, Korea **,†Department of Electrical Engineering, Yeungnam University, Gyeongsan, Korea 
Abstract
Power quality is a critical issue in distribution systems, where a dynamic voltage restorer (DVR) is commonly used to mitigate the voltage disturbances for loads. This paper deals with a nonlinear control for the three-phase four-wire (3P-4W) DVR under a grid voltage unbalance and nonlinear loads in the distribution system, where a novel control scheme based on the feedback linearization technique is proposed. Through feedback linearization, a nonlinear model of a DVR with a PWM voltage-source inverter (VSI) and LC filters is linearized. Then, the controller design of the linearized model is performed by applying the linear control theory, where the load voltages are kept constant by controlling the d-q-0 axis components of the DVR output voltages. To keep the load voltage unchanged, an in-phase compensation strategy is employed, where the load voltages are recovered to be the same as the previous voltage without a change in the magnitude. With this strategy, the performance of the DVR becomes faster and more stable even under unbalanced source voltages and nonlinear loads. The validity of the proposed control strategy has been verified by simulation and experimental results.

Key words: Dynamic voltage restorers, feedback linearization, SOGI-PLL, three-phase four-wire VSI, voltage unbalance

 LINK: http://ocean.kisti.re.kr/downfile/volume/kipe/E1PWAX/2016/v16n1/E1PWAX_2016_v16n1_351.pdf

Power Modules for Combining Innovation, Flexibility and Power Capability in the Various 3-Level Topologies - By Narender Lakshmanan and Thomas Radke, Mitsubishi Electric Europe

Three level topologies have demonstrated higher efficiencies, filter optimization potential and the capability of handling high DC-link voltages. To maximize the advantages offered by the 3-level topologies, Mitsubishi Electric offers new power modules which unlock the potential to realize innovative solutions for different power segments. By Narender Lakshmanan and Thomas Radke, Mitsubishi Electric Europe B.V. and Satoshi Kawabata, Mitsubishi Electric Corporation Japan Power Device Works.
 LINK ORIGINAL EN LA WEB
https://www.hy-line.de/fileadmin/Public/Power/hersteller/mitsubishi/dokumente/BPs_04-16_Mitsubishi.pdf

Livre : Circuits électriques - Presses de l'Université de Laval - HOANG LE-HUY

LINK ORIGINAL EN LA WEB
http://www.biblio-scientifique.net/2015/11/livre-circuits-electriques-presses-de.html
LINK DIRECTO TELECHARGER
https://drive.google.com/open?id=0Bx7ahSnE_GyvcEREZGJMcXNUTTA
LINK ALTERNATIVO PDF
http://www.mediafire.com/file/5bc4n3y7tj7mud5/Circuits_Electriques-HOANG_LE_HUY.pdf

Exercices et Problèmes corrigés d'Electronique Analogique - ALI GHARSALLAH,TAHAR BEN NASRALLAH

LINK ORIGINAL EN LA WEB
http://www.mediafire.com/file/tgpnu4mcnu0q1hu/Livre_Exercices+et+Probl_corrig_lectronique+analogique.pdf

LINK ALTERNATIVO
http://www.mediafire.com/file/9zuj2zodbuxn9vo/Livre_Exercices_et_Probl_corrig_lectronique_analogique.pdf

KOLFF en ExpoPreve Duoc San Joaquín

KOLFF nuevamente se hace presente en el evento Expo Preve 2016 de Duoc UC. En esta oportunidad la actividad se realizó en la sede San Joaquín del Instituto, en la cual se hizo presente gran cantidad de expertos en Seguridad, junto a cientos de alumnos de las carreras de Ingeniería y Técnico en Prevención de Riesgos. Como empresa nos sentimos orgullosos de apoyar la formación de estos jóvenes que se integrarán prontamente a la Industria nacional.
 FUENTE ORIGINAL DE LA NOTICIA
http://kolff-e.com/2016/10/07/kolff-en-expopreve-duoc-san-joaquin/

BIRNS Emergency Light Fixture-LED Seismic Testing

This video shows BIRNS Emergency Light Fixture-LEDs (ELF-LEDs) during IEEE-344 seismic qualification testing at the National Technical Systems facility. This demanding test sequence uses a tri-axial acceleration table delivering the equivalent of a seismic event at 10Gs of force in the x, y and z axes.

BIRNS ELF-LEDs are advanced, seismically qualified nuclear grade lighting systems that provide 24-40 hours of standby illumination in the event of loss of AC power, which is 3 to 5 times longer than required by the NRC. These rugged, CE marked, RoHS compliant systems have a lamp life of 50,000 hours, and an 11 W power draw.

Beginning arduino 2nd edition sep 2013

LINK ORIGINAL EN LA WEB
https://issuu.com/putrajambak/docs/apress.beginning.arduino.2nd.editio

Arduino workshop a hands on introduction with 65 projects

LINK ORIGINAL EN LA WEB
https://issuu.com/issuuk/docs/arduino_workshop_a_hands-on_introdu

Simulación de circuitos electróncos con PSpice Juan Aguilar

LINK ORIGINAL
https://issuu.com/jaguilarpena/docs/seminario

LINK ALTERNATIVO DIRECTO
http://www.mediafire.com/file/uk2kboxden1kn3o/Seminario.pdf