Search Results - "Alex Restrepo"

Effects of two-step high-energy ball milling process and hot isostatic pressing on the mechanical properties of PM magnesium by Rios, Jesus María, Restrepo, Alex Humberto, Zuleta, Alejandro Alberto, Javier Bolívar, Francisco, Castaño, Juan Guillermo, Correa, Esteban, Echeverria, Félix

“…Commercial powders of magnesium were processed by high-energy ball milling (HEBM) using a two-stage composite process. The microstructural and morphological…”
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Effect of Ball Size on the Microstructure and Morphology of Mg Powders Processed by High-Energy Ball Milling by Rios, Jesus, Restrepo, Alex, Zuleta, Alejandro, Bolívar, Francisco, Castaño, Juan, Correa, Esteban, Echeverria, Félix

“…Commercial powders of pure magnesium were processed by high-energy ball milling. The microstructural and morphological evolution of the powders was studied…”
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IED Design for a Small-Scale Microgrid Using IEC 61850 by Burbano, Rudy Alexis Guejia, Gutierrez, Martha Lucia Orozco, Restrepo, Jose Alex, Guerrero, Fabio G.

“…This article presents a communications test rig based on a customized intelligent electronic device (IED) for its use in a laboratory-scale microgrid. The…”
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Experimental framework for laboratory scale microgrids by Restrepo-Zambrano, José Alex

“…This paper presents a proposal for a microgrid test rig for laboratory use. It aims at high flexibility using a modular approach with a common hardware for…”
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FPGA-based real-time simulation of mismatched photovoltaic arrays by Carabali-Isajar, Alejandro, Orozco-Gutierrez, Martha Lucia, Franco-Mejía, Edinson, Spagnuolo, Giovanni, Restrepo, Jose Alex

“…This paper proposes an approach to the real time simulation of photovoltaic (PV) arrays that are subjected to mismatching conditions, e.g. partial shadowing…”
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Resistencia a Medicamentos en Mycobacterium tuberculosis: contribución de mecanismos constitutivos y adquiridos by Gómez Tangarife, Verónica, Gómez Restrepo, Alex Julián, Robledo Restrepo, Jaime Alberto, Hernández Sarmiento, José Mauricio

“…En presencia de aislamientos de Mycobacterium tuberculosis (MTB) multifármaco-resistentes (MTB-MDR) y con resistencia extendida (MTB-XDR) las tasas de fracaso…”
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Development of low content Ti-x%wt. Mg alloys by mechanical milling plus hot isostatic pressing by Carvajal, Alex Humberto Restrepo, Ríos, Jesús María, Zuleta, Alejandro Alberto, Bolívar, Francisco Javier, Castaño, Juan Guillermo, Correa, Esteban, Echeverria, Félix, Lambrecht, Mickaël, Lasanta, María Isabel, Trujillo, Francisco Javier Pérez

“…Several authors have shown promising results using Ti and Mg to develop materials that combine the benefits of these two metals, such as their low density and…”
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Influence of the milling conditions on the compressive strength of Ti/TiC composite materials sintered at atmospheric pressure by Restrepo Carvajal, Alex Humberto, Zuleta Gil, Alejandro Alberto, Castaño G, Juan Guillermo, Ríos Arbeláez, Jesús María, Bedoya, Esteban Correa, Bolívar Osorio, Francisco Javier, Echeverría, Félix Echeverría

“…High compressive strength composite materials based on commercially pure titanium were synthesized from Ti Cp grade 2 powders processed by high-energy ball…”
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Test-Rig for Engineering Education Applied to the Control of Synchronous Generators by Quintero Calvache, Jorge Eliecer, Restrepo Zambrano, Jose Alex, Ramirez Scarpetta, Jose Miguel, Orozco Gutierrez, Martha Lucia

“…This work presents the result of employing a custom test-rig, designed for education and research, for teaching the control of synchronous generators in…”
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Classification of atmospheric aggressiveness in Colombia using multivariate statistical methods by Juan Delgado, Juan Guillermo Castaño, Esteban Correa, Alex Restrepo, Félix Echeverría

“…Studies of atmospheric corrosion often require a classification of environments based on their aggressiveness, which involves the processing of a large amount…”
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Parameter estimation method for induction machines using instantaneous voltage and current measurements by Rengifo-Santana, Johnny Wladimir, Benzaquen-Suñe, Joseph, Aller-Castro, José Manuel, Bueno-Montilla, Alexander Alfredo, Restrepo-Zambrano, José Alex

“…This paper proposes an off-line method to determine the electrical parameters of an induction machine based on two instantaneous indicators (impedance and…”
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Correction to: Effects of two‑step high‑energy ball milling process and hot isostatic pressing on the mechanical properties of PM magnesium by María Rios, Jesus, Restrepo, Alex Humberto, Zuleta, Alejandro Alberto, Javier Bolívar, Francisco, Castaño, Juan Guillermo, Correa, Esteban, Echeverria, Félix

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Fuzzy control techniques applied to a three phase synchronous rectifier current loop by Berzoy-Llerena, Alberto, Guzman-Arguiz, Victor Manuel, Giménez de Guzmán, María Isabel, Restrepo-Zambrano, José Alex, Aller-Castro, José Manuel

“…This work presents three fuzzy variable structure control (FVSC) techniques applied to the current control loop in a three-phase synchronous rectifier. These…”
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Control of Parallel Connected Voltage Source Inverters in a Microgrid for Experimental Testing by Vasquez-Plaza, Jesus D., Tenorio, Jorge, Ramirez-Scarpetta, J. M., Restrepo, Jose Alex, Andrade, Fabio

“…This article describes the primary and secondary controls of voltage source inverters that are part of a custom-made AC microgrid for testing control…”
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Clasificación de la agresividad atmosférica en Colombia mediante métodos estadísticos multivariados by Juan Delgado, Juan Guillermo Castaño, Esteban Correa, Alex Restrepo, Félix Echeverría

“…Los estudios de corrosión atmosférica, a menudo, requieren una clasificación de las atmósferas en función de su agresividad, lo cual implica el procesamiento…”
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Statistic assessment of the factors that take part in the corrosion on buried pipe by Juan Delgado Lastra, Jorge Andrés Calderón Gutiérrez, Sergio Luis Peñaranda Arciniegas, Alex Restrepo

“…Corrosion of buried pipes is a phenomenon that depends more on the corrosivity of the ground than on the nature of the metal. The evaluation of the corrosivity…”
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Drug resistance in Mycobacterium tuberculosis: contribution of constituent and acquired mechanisms by Gómez-Tangarife, Verónica J, Gómez-Restrepo, Alex J, Robledo-Restrepo, Jaime, Hernández-Sarmiento, José M

“…Due to the emergence of multi-drug resistant (MDR-MTB) and extensively drug-resistant (XDR-MTB) Mycobacterium tuberculosis (MTB) isolates, the failure rates of…”
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INVERSOR MULTINIVEL ACOPLADO SIN TRANSFORMADOR A LA LÍNEA ELÉCTRICA PARA LA INCORPORACIÓN DE FUENTES FOTOVOLTAICAS DISTRIBUIDAS by Viola, Julio César, Restrepo Zambrano, José Alex, Aller Castro, José Manuel, Quizhpi Palomeque, Flavio Alfredo

“…El presente trabajo trata sobre el estudio, diseño e implementación de un inversor multinivel capaz de operar con los esquemas de distribución eléctricos más…”
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Experimental framework for laboratory scale microgrids/Marco experimental para microrredes a escala de laboratorio by Restrepo-Zambrano, Jose Alex, Ramirez-Scarpetta, Jose Miguel, Orozco-Gutierrez, Martha Lucia, Tenorio-Melo, Jorge Antonio

“…This paper presents a proposal for a microgrid test rig for laboratory use. It aims at high flexibility using a modular approach with a common hardware for…”
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Parameter estimation method for induction machines using instantaneous voltage and current measurements/Método para la estimación paramétrica de máquinas de inducción utilizando medidas de tensiones y corrientes instantáneas by Rengifo-Santana, Johnny Wladimir, Benzaquen-Sune, Joseph, Aller-Castro, Jose Manuel, Bueno-Montilla, Alexander Alfredo, Restrepo-Zambrano, Jose Alex

“…This paper proposes an off-line method to determine the electrical parameters of an induction machine based on two instantaneous indicators (impedance and…”
Get full text