<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0379-3982</journal-id>
<journal-title><![CDATA[Revista Tecnología en Marcha]]></journal-title>
<abbrev-journal-title><![CDATA[Tecnología en Marcha]]></abbrev-journal-title>
<issn>0379-3982</issn>
<publisher>
<publisher-name><![CDATA[Instituto Tecnológico de Costa Rica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0379-39822017000400052</article-id>
<article-id pub-id-type="doi">10.18845/tmv30i4.3411</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Proceso de diseño de sistemas de iluminación LED energéticamente autónomos]]></article-title>
<article-title xml:lang="en"><![CDATA[Design process of LED lighting systems energetically autonomous]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Chacón-Avilés]]></surname>
<given-names><![CDATA[Rodolfo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Meza-Benavides]]></surname>
<given-names><![CDATA[Carlos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[A.C-Braga]]></surname>
<given-names><![CDATA[Henrique]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[S.-Almeida]]></surname>
<given-names><![CDATA[Pedro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[G.-Casagrande]]></surname>
<given-names><![CDATA[Cristiano]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Tecnológico de Costa Rica Escuela de Ingeniería en Electrónica ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Tecnológico de Costa Rica Escuela de Ingeniería en Electrónica ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Federal de Juiz de Fora Núcleo de Iluminación Moderna NIMO Facultad de Ingeniería Eléctrica]]></institution>
<addr-line><![CDATA[Minas Gerais ]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Federal de Juiz de Fora Núcleo de Iluminación Moderna NIMO Facultad de Ingeniería Eléctrica]]></institution>
<addr-line><![CDATA[Minas Gerais ]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Universidad Federal de Juiz de Fora Laboratorio de Eficiencia Energética LEENER Facultad de Ingeniería Eléctrica]]></institution>
<addr-line><![CDATA[Minas Gerais ]]></addr-line>
<country>Brazil</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2017</year>
</pub-date>
<volume>30</volume>
<numero>4</numero>
<fpage>52</fpage>
<lpage>65</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S0379-39822017000400052&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S0379-39822017000400052&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S0379-39822017000400052&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El reciente desarrollo en tecnologías de almacenamiento de energía eléctrica e iluminación de eficiencia energética hace viable, tanto desde el punto de vista técnico como económico, la utilización de dispositivos de iluminación energéticamente autónomos. Este tipo de dispositivos no sólo son de gran utilidad en aquellas regiones en donde no existe la red eléctrica sino también en aquellos espacios en donde se desea evitar construir instalaciones eléctricas por razones estéticas, ambientales o económicas. Si bien es cierto existen dispositivos comerciales de iluminación energéticamente autónomos, su costo, vida útil y desempeño no los hacen atractivos o competitivos con respecto a los sistemas de iluminación convencionales. Análisis basados en ingeniería inversa realizados por el Laboratorio de Sistemas Electrónicos para la Sostenibilidad (SESLab), de la Escuela de Ingeniería en Electrónica del Tecnológico de Costa Rica, se ha encontrado que el subsistema electrónico de muchas luminarias comerciales se puede modificar para ampliar significativamente su desempeño y vida útil. En este artículo se presenta el proceso de diseño de un dispositivo de iluminación LED energéticamente autónomo, en el cual se toman en cuenta las características eléctricas del sistema de iluminación, el sistema de almacenamiento y las características ópticas de la luminaria. De esta forma, se logra identificar formas en las cuales se puede extender la vida útil del sistema y mejorar su desempeño.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The recent development in technologies of storage of electric power and lighting of energetic efficiency makes viable, from the technical and economic point of view, the utilization of off-grid electrical devices for lighting. This type of devices is not only of great usefulness in those regions where the electrical network does not exist, but also in those spaces where it is not desirable to install electrical wiring for esthetic, environmental or economic reasons. Even though there are in the market off-grid lighting devices, their cost, life span and performance do not make them attractive or competitive with respect to conventional lighting systems. Reverse engineering analysis done at the Laboratory of Electronic Systems for Sustainability (SESLab), of the Electronic Engineering School of the Costa Rica&#8217;s Institute of Technology, have proved that the electronic subsystem of many commercial lighting devices can be modified in order to extend significantly its performance and durability. This paper contents a design process for off-grid electrical lighting systems. The process takes into account the electrical characteristics of the lighting system, storage technology and the optical characteristics of the luminaire. In this way, the design allows to improve performance and durability of the lighting system.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[LED]]></kwd>
<kwd lng="es"><![CDATA[batería de ión-litio, control corriente y tensión]]></kwd>
<kwd lng="es"><![CDATA[procesamiento de potencia]]></kwd>
<kwd lng="en"><![CDATA[LED]]></kwd>
<kwd lng="en"><![CDATA[Li-On Battery]]></kwd>
<kwd lng="en"><![CDATA[current/voltage control]]></kwd>
<kwd lng="en"><![CDATA[power processing]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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