ListarInvestigaciones por tema "LEMB"
Mostrando ítems 1-20 de 548
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2D CFD Modeling of Rapid Water Filling with Air Valves Using OpenFOAM
(Cartagena de Indias, 2021-11-04)The rapid filling process in pressurized pipelines has been extensively studied using mathematical models. On the other hand, the application of computational fluid dynamics models has emerged during the last decade, which ... -
A blockchain solution for operational parameters monitoring platform for DC microgrids
(Cartagena de Indias, 2020-12-01)Large penetration of renewable distributed energy resources, as well as the effective integration of storage systems and electric vehicles, are some of the required strategies to reduce the impact of the energy sector on ... -
A Comparative Study on Power Flow Methods Applied to AC Distribution Networks with Single-Phase Representation
(Cartagena de Indias, 2021-10-21)This paper presents a comparative analysis of six different iterative power flow methods applied to AC distribution networks, which have been recently reported in the scientific literature. These power flow methods are (i) ... -
A Comparative Study on Power Flow Methods for Direct-Current Networks Considering Processing Time and Numerical Convergence Errors
(Cartagena de Indias, 2020-12-03)This study analyzes the numerical convergence and processing time required by several classical and new solution methods proposed in the literature to solve the power-flow problem (PF) in direct-current (DC) networks ... -
A Discrete-Continuous PSO for the Optimal Integration of D-STATCOMs into Electrical Distribution Systems by Considering Annual Power Loss and Investment Costs
(Cartagena de Indias, 2022-07-14)Currently, with the quick increase in global population, the energetic crisis, the environmental problematic, and the development of the power electronic devices generated the need to include new technologies for supporting ... -
A fixed-point current injection power flow for electric distribution systems using Laurent series
(Cartagena de Indias, 2022-07-02)his paper proposes a new power flow (PF) formulation for electrical distribution systems using the current injection method and applying the Laurent series expansion. Two solution algorithms are proposed: a Newtonlike ... -
A Framework for Water Security Data Gathering Strategies
(Cartagena de Indias, 2022-09)At the international level, the term “water security” (WS) has gained increasing attention in recent decades. At the operational level, WS is assessed using tools that define the concept using a variety of dimensions and ... -
A Global Tracking Sensorless Adaptive PI-PBC Design for Output Voltage Regulation in a Boost Converter Feeding a DC Microgrid
(Cartagena de IndiasCampus Tecnológico, 2023-01-19)The problem of the output voltage regulation in a DC-DC boost converter feeding a DC microgrid is addressed in this research via the passivity-based control theory with a proportional–integral action (PI-PBC). Two external ... -
A hybrid approach based on socp and the discrete version of the sca for optimal placement and sizing dgs in ac distribution networks
(Cartagena de Indias, 2020-12-27)This paper deals with the problem of the optimal placement and sizing of distributed generators (DGs) in alternating current (AC) distribution networks by proposing a hybrid master–slave optimization procedure. In the ... -
A linearized approach for the electric light commercial vehicle routing problem combined with charging station siting and power distribution network assessment
(Cartagena de IndiasCampus Tecnológico, 2021-05-21)Transportation electrification has demonstrated a significant position on power utilities and logistic companies, in terms of assets operation and management. Under this context, this paper presents the problem of seeking ... -
A machine learning approach for banks classification and forecast
(Cartagena de Indias, 2019-04)n this research, a classification model is developed for the banking sector using the machine earning technique GLMNET. In the first place, a clustering process was developed, where 3 clearly differentiated groups were ... -
A machine learning model to predict standardized tests in engineering programs in Colombia
(Cartagena de Indias, 2023-08)This research develops a model to predict the results of Colombia’s national standardized test for Engineering programs. The research made it possible to forecast each student’s results and thus make decisions on reinforcement ... -
A mathematical model for the optimization of e-commerce logistics operations in the face of the spread of COVID-19
(Cartagena de Indias, 2021)In this work, it was carry out a new model of attention to product orders in e-commerce operations in a pandemic situation. The model was evaluated in situations that require capacity and flexibility for companies when the ... -
A method for evaluating the quality service of a user unit in a water service company in Colombia
(Cartagena de Indias, 2020)This research study proposes a method to evaluate the quality of service of a user service unit in a water service company in Colombia. Based on the theoretical foundation associated with the quality of service and the Six ... -
A Method to Rationalize the Product Portfolio in Retail Stores
(Cartagena de Indias, 2020-04-29)Retail store operations face a variety of challenges and complexities. Determining the best assortment is the main problem in the retail store. This re-search presents a practical methodology for the analysis of products ... -
A mixed-integer conic formulation for optimal placement and dimensioning of DGs in DC distribution networks
(Cartagena de Indias, 2021-01-14)The problem of the optimal placement and dimensioning of constant power sources (i.e., distributed generators) in electrical direct current (DC) distribution networks has been addressed in this research from the point of ... -
A mixed-integer convex approximation for optimal load redistribution in bipolar DC networks with multiple constant power terminals
(Cartagena de Indias, 2022)This paper proposes a mixed-integer convex model for optimal load-balancing in bipolar DC networks while considering multiple constant power terminals. The proposed convex model combines the Branch and Cut method with ... -
A mixed-integer convex model for the optimal placement and sizing of distributed generators in power distribution networks
(Cartagena de Indias, 2021-01-11)The optimal placement and sizing of distributed generators is a classical problem in power distribution networks that is usually solved using heuristic algorithms due to its high complexity. This paper proposes a different ... -
A mixed-integer second-order cone model for optimal siting and sizing of dynamic reactive power compensators in distribution grids
(Cartagena de Indias, 2022-06-20)The problem of the optimal placement and sizing of dynamic reactive power compensators in AC distribution networks is addressed in this paper from convex optimization. The exact mixed-integer nonlinear programming (MINLP) ... -
A mlpg formulation for stress analysis in bi-dimensional elastic bodies
(Cartagena de Indias, 2020-08-11)In this work, a meshfree method known as Meshless Local Petrov-Galerkin was implemented in a bidimensional linear elasticity problem. Bidimensional MLS shape functions were used in the polynomial approximation of the ...
Universidad Tecnológica de Bolívar - 2017 Institución de Educación Superior sujeta a inspección y vigilancia por el Ministerio de Educación Nacional. Resolución No 961 del 26 de octubre de 1970 a través de la cual la Gobernación de Bolívar otorga la Personería Jurídica a la Universidad Tecnológica de Bolívar.