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Mostrando ítems 120-139 de 1384
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Alternative power flow method for direct current resistive grids with constant power loads: A truncated Taylor-based method
(Institute of Physics Publishing, 2019)The power flow in electrical system permits analyzing and studying the steady-state behavior of any grid. Additionally, the power flow helps with the proper planning and management of the system. Therefore, it is increasingly ... -
Alternatives for recovering the ecosystem services and resilience of the Salamanca Island Natural Park, Colombia
(Campus TecnológicoIngeniería Civil, 2020-05-25)From a comprehensive diagnosis of the associated basins, islands, and wetlands of the coastal lagoon system of Ciénaga Grande de Santa Marta, Colombia, this work describes feasible options for the recovery of its ecosystem’s ... -
An a posteriori error estimator for a non-conforming domain decomposition method for a harmonic elastodynamics equation
(Global Science Press, 2018)We develop a reliable residual-based a posteriori error estimator for a nonconforming method with non-matching meshes for a harmonic elastodynamics equation and show that the approximation method converges with an optimal ... -
An Application of Machine Learning to Estimate and Evaluate the Energy Consumption in an Office Room
(Cartagena de Indias, 2023)There are no exact criteria for the architecture of openings and windows in office buildings in order to optimize energy consumption. Due to the physical limitations of this renewable energy source and the lack of conscious ... -
An approximate mixed-Integer convex model to reduce annual operating costs in radial distribution networks using STATCOMs
(Cartagena de Indias, 2021-12-13): The problem of optimal siting and sizing of distribution static compensators (STATCOMs) is addressed in this research from the point of view of exact mathematical optimization. The exact mixed-integer nonlinear programming ... -
An automatic approach to generate corpus in Spanish
(Springer Verlag, 2018)A corpus is an indispensable linguistic resource for any application of natural language processing. Some corpora have been created manually or semi-automatically for a specific domain. In this paper, we present an automatic ... -
An Effective Power Dispatch of Photovoltaic Generators in DC Networks via the Antlion Optimizer
(Cartagena de IndiasCampus Tecnológico, 2023-01-27)This paper studies the problem regarding the optimal power dispatch of photovoltaic (PV) distributed generators (DGs) in Direct Current (DC) grid-connected and standalone networks. The mathematical model employed considers ... -
An Efficient EMS for BESS in Monopolar DC Networks with High Penetration of Renewable Generation: A Convex Approximation
(Cartagena de IndiasCampus Tecnológico, 2023-01-26)This research presents an efficient energy management system (EMS) for battery energy storage systems (BESS) connected to monopolar DC distribution networks which considers a high penetration of photovoltaic generation. ... -
An Efficient Methodology for Locating and Sizing PV Generators in Radial Distribution Networks Using a Mixed-Integer Conic Relaxation
(Cartagena de Indias, 2022-07-27)This paper proposes a new solution methodology based on a mixed-integer conic formulation to locate and size photovoltaic (PV) generation units in AC distribution networks with a radial structure. The objective function ... -
An energy management system for optimal operation of BSS in DC distributed generation environments based on a parallel PSO algorithm
(Cartagena de IndiasCampus Tecnológico, 2020-06-16)This paper proposes an energy management system (EMS) for the day-ahead dispatch of battery storage systems (BSS) under a distributed generation environment for direct current (DC) networks, with the main objective of ... -
An Energy Management System for PV Sources in Standalone and Connected DC Networks Considering Economic, Technical, and Environmental Indices
(Cartagena de Indias, 2022)This research proposes an efficient energy management system for standalone and grid-connected direct current (DC) distribution networks that consider photovoltaic (PV) generation sources. A complete nonlinear programming ... -
An EPQ inventory model considering an imperfect production system with probabilistic demand and collaborative approach
(Emerald Group Publishing Ltd., 2019)Purpose: The purpose of this paper is to propose an economic production quantity (EPQ) inventory model considering imperfect items and probabilistic demand for a two-echelon supply chain. The production process is imperfect ... -
An Exact Feedback Linearization Control of a SMES System to Support Power in Electrical Grids
(Institute of Electrical and Electronics Engineers Inc., 2018)This paper presents an exact feedback linearization control strategy to operate superconducting magnetic energy storage (SMES) systems connected to an electric distribution network through a pulse-width-modulated current ... -
An exact MINLP model for optimal location and sizing of DGs in distribution networks: A general algebraic modeling system approach
(Ain Shams University, 2019)This paper addresses the classical problem of optimal location and sizing of distributed generators (DGs) in radial distribution networks by presenting a mixed-integer nonlinear programming (MINLP) model. To solve such ... -
An experimental study on deformation analysis of an indented pipe via fringe projection profilometry and digital image correlation
(OSA - The Optical Society, 2018)We studied the surface displacement of a steel pipe during indentation via Fringe Projection Profilometry and 2D-Digital Image Correlation. Experimental results show that a 3D strain approximation is possible for comparison ... -
An IDA-PBC Design with Integral Action for Output Voltage Regulation in an Interleaved Boost Converter for DC Microgrid Applications
(Cartagena de Indias, 2021-12-29)This paper describes the output voltage regulation control for an interleaved connected to a direct current (DC) microgrid considering bidirectional current flows. The proposed controller is based on an interconnection ... -
An Implicit Formulation for Calculating Final Conditions in Drainage Maneuvers in Pressurized Water Installations
(Cartagena de Indias, 2022)Emptying processes are typical maneuvers that should be performed by water distribution companies for operation purposes. These processes involve a complex numerical analysis, since a set of algebraic and ordinary differential ... -
An improved crow search algorithm applied to the phase swapping problem in asymmetric distribution systems
(Cartagena de Indias, 2021-07-23)This paper discusses the power loss minimization problem in asymmetric distribution systems (ADS) based on phase swapping. This problem is presented using a mixed-integer nonlinear programming model, which is resolved by ... -
An Infinite Family of Magnetized Morgan-Morgan Relativistic Thin Disks
(2012)Applying the Horský-Mitskievitch conjecture to the empty space solutions of Morgan and Morgan due to the gravitational field of a finite disk, we have obtained the corresponding solutions of the Einstein-Maxwell equations. ... -
An infinite family of relativistic magnetized finite thin disks
(Institute of Physics Publishing, 2011)An infinite family of relativistic finite thin disk model with magnetic field is presented. The model is obtained for solving the Einstein-Maxwell equations for static spacetimes by means of the Horsk-Mitskievitch generating ...
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.