Vídeo: Tecnologia de Eletrônica de Potência Palestra 25

Power Electronics Circuit Simulation - GeckoCIRCUITS

GeckoCIRCUITS

GeckoCIRCUITS is a circuit simulator that allows a power electronic system to be described on a system level. Besides its fast circuit simulation capability, GeckoCIRCUITS combines control modelling and thermal simulations via equivalent networks in an easy-to-use software package. GeckoCIRCUITS has its strengths in the extremely high simulation speed and its open interface. The software can be integrated into MATLAB/Simulink or other programming environments.

GeckoCIRCUITS is distributed as an open-source project for free use without additional cost. Additionally, we offer high-quality support and service contracts to GeckoCIRCUITS users and companies. Our commercial support package includes phone or email support, more detailed documentation as well as the implementation of customer specific software solutions. Please contact us, if you are interested in a service contract for GeckoCIRCUITS.

You can freely download the program here!
WEBSITE
http://www.gecko-research.com/geckocircuits.html

Design and Implementation of High Efficiency, High Power Density Front-End Converter for High Voltage Capacitor Charger by Yonghan Kang

Design and Implementation of High Efficiency, High Power Density Front-End Converter for High Voltage Capacitor Charger by Yonghan Kang Thesis submitted to the Faculty of the Virginia Polytechnic Institute and State University in partial fulfillment of the requirements for the degree of Master of Science in Electrical Engineering Dr. Fred C. Lee, Chairman Dr. J. D. van Wyk Dr. Fred Wang April 15, 2005 Blacksburg, Virginia.
LINK THESIS
https://www.mediafire.com/?p7exycdv9mc4mo7

Design of Inverter for LCD TV Backlight with Flat Fluorescent Lamp Jeongwook Hur

Design of Inverter for LCD TV Backlight with Flat Fluorescent Lamp Jeongwook Hur Department of Electronic and Computer Engineering Graduate School Dankook University Advisor : Professor Sungkyoo Lim ABSTRACT The liquid crystal display(LCD) TV market has been growing continuously and cost reduction is one of the biggest issues to increase its market share. The LCD needs backlight because it belongs to non emissive displays. The cold cathode fluorescent lamp (CCFL) and external electrode fluorescent lamp (EEFL) are widely used in backlight system for LCDs. But assembly of CCFL and EEFL backlight system is very complex. The flat fluorescent lamp (FFL) is a newly developed light source and it has a very simple structure. The LCD backlight can have a simple structure if the newly delvelop FFL is used as a light source. The backlight with FFL can be more cost effective than that of the backlights with CCFL or EEFL light sources. But the temperature behaviour of FFL backlights are different from the backlight with CCFL or EEFL light sources, which prohibits FFL backlight from being accepted as the backlight for commercial application. In this paper, the FFL inverter with level control block(LCB) circuit was proposed to overcome the operation of FFL at low temperature. The inverter using LCB was developed to drive LCD TV backlight system using FFL light source with reliability at all temperature range of operation. The electro-optical characteristics of the FFL backlight showed substantial improvement by driving FFL backlight with inverter adapting LCB circuit. The FFL striking time, the time for brightness stabilization, and FFL lamp current were able to adjusted so that it was possible to operate the LCD TV backlight using FFL light source with stability at wide temperature range.
TESIS COMPLETA
https://www.mediafire.com/?g0x499gjk29qt09
FUENTE ORIGINAL
http://lib.dankook.ac.kr/dcollection/jsp/common/DcLoOrgPer.jsp?sItemId=000000030783

A HIGH EFFICIENCY SINGLE STAGE FLYBACK CONVERTER FOR PLAMA DISPLAY PANEL PDP SUSTAINING POWER MODULE

A High Efficiency Single-Stage Flyback Converter for PDP Sustaining Power Module Kwang Min Yoo Dept.of Electronics and Computer Engineering Graduate School 
Dankook University  Advisor:Prof.Sung KyooLim 
ABSTRACT
Since AC PDP was invented atthe University ofIllinois in 1964,thePDP technology hasbeen developed remarkably and itsuccessfully entered FlatPanelDisplay(FPD)marketthanks toitsattractivemeritssuch aswideview angle,largescreen, high brightness,and thinness.PDP market-share becomes to bewiden in largesizedisplay marketbutitscostisstillhigh to compete with other FPDs,which is the most important issue left in PDP to be solved. The operation of PDP is divided into threeperiodsofsetup,addressing,and sustaining and its brightness information is defined by sustain pulse number.The sustaining power module takes charge of total power over 80% for sustaining operation. PDP power consumption is controlled by changing the total sustain number according to displayed images due to the low panel efficiency, which causes that the load current drawn by driving circuitis varying according to subfield changes and displayedimages.Consequently itisrequiredthatPDP sustain power supply should have good voltage regulations under dynamic load changes because the image qualities and discharge margins are seriously affected by the sustain voltage.To meet the requirements,one of the most widely used methods is two-stage method.Ithas cascade structure comprised of harmonic preregulator to reduce input current harmonics and DC/DC converterto regulate a outputvoltage. In this paper, a low cost PDP sustain power supply is proposed based on flyback topology. By using Boundary Conduction Mode(BCM) to control input current regulation, DCM condition can be metunderallload conditions.
LINK
https://www.mediafire.com/?pv8q5s38f1bcblb