Proceedings ArticleDOI
Comparative analysis of the reliability of drivers for power LED
I. Villanueva,Mario A. Juarez,P.R Martinez,Jose M. Sosa,G. Vazquez +4 more
- pp 1-6
TLDR
The results have shown that the buck converter has a lower failure rate and a higher mean time between failures, therefore has a longer useful life.Abstract:
This paper presented a comparative study in function reliability between dc-dc converters used in power LED. Between dc-dc converters more used to power LED are the Buck and Flyback converter, because the Buck provides a lower output voltage than the input, and in the case of flyback has galvanic isolation. The study has objetive to determine the reliability obtaining the failure rate of the system and the average time when failures occurs, because the LED driver must have an average life similar to the LED lamp. The reliability analysis is based in the standard MIL-HDBK-217, for this study performed was used a LED load of 54.6 W in both converters. The results have shown that the buck converter has a lower failure rate and a higher mean time between failures, therefore has a longer useful life.read more
Citations
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Dissertation
A Systematic Approach to Reliability Assessment of DC-DC Power Electronic Converters
TL;DR: In this paper, a nouveau cadre d'etude de la fiabilite a partir de deux methodes afin dameliorer the precision des etudes de fiabilité : une analyse utilisant la methode des systeme degrades multi-etat, and une analyse par intervalles.
Proceedings ArticleDOI
Study of Equilibrium Point Qualitative Behaviors in DC-DC Converters
Diana C. Valdes-Delgado,Carlos A. Gomez-Saavedra,Hector O. Valdez-Carrera,Jose M. Sosa,Cesar A. Limones-Pozos,Gerardo Vazquez-Guzman,Adolfo R. Lopez +6 more
TL;DR: The analysis of focus and node qualitative behaviors of DC-DC power electronics converters around a given equilibrium point is studied and open-loop and closed-loop dynamics are considered.
Proceedings ArticleDOI
Conception and design of a lighting system based on Light Emitting Diodes for spectrum simulation
TL;DR: This work focuses on the design and implementation of a solid-state solar simulator whose spectrum resembles the natural daylight to support research on photosynthetic organisms and Mixed Integer Programming is adopted to set the optimal amount of LEDs that result in the most accurate response.
Journal ArticleDOI
Comparison of Dc-Dc SEPIC, CUK and Flyback Converters Based LED Drivers
TL;DR: This paper presents the comparison of LED driver topologies that include SEPIC, CUK and FLYBACK DC-DC converters with respect to LED current, LED voltage, input voltage and current.
References
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MonographDOI
Light-Emitting Diodes by E. Fred Schubert
TL;DR: In this paper, the authors present an overview of the history of light emitting diode (LED) and LED-based display technologies and apply them to a wide range of applications.
Journal ArticleDOI
The Transition to Solid-State Lighting
TL;DR: A measure of cost-effectiveness for solid-state lighting in the context of other climate change abatement policies is provided, showing great promise as a source of efficient, affordable, color-balanced white light.
Journal ArticleDOI
An Overview of the AC-DC and DC-DC Converters for LED Lighting Applications
TL;DR: The main HB-LED characteristics will be explained, highlighting how they influence the design of their power supplies, and the main topologies will be presented from the simplest to the most complex ones, analysing their advantages and disadvantages.
Journal ArticleDOI
Reliability Analysis and Performance Degradation of a Boost Converter
TL;DR: In this article, the authors present a reliability analysis for a boost converter, although this method could be used to any power converter being operated using closed-loop controls. But, the reliability of the boost converter having control loops degrades with time, and this paper presents a method to calculate time-varying reliability of a boosting converter as a function of characteristic variations in different components in the circuit.