Listar Productos de investigación por autor "Garcés, Alejandro"
Mostrando ítems 1-17 de 17
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A generalized passivity-based control approach for power compensation in distribution systems using electrical energy storage systems
Montoya O.D.; Garcés, Alejandro; Espinosa-Pérez, G. (Elsevier Ltd, 2018)This paper presents a generalized interconnection and damping assignment passivity-based control (IDA-PBC) for electric energy storage systems (EESS) such as: superconducting magnetic energy storage (SMES) and supercapacitor ... -
A mixed-integer convex model for the optimal placement and sizing of distributed generators in power distribution networks
Gil-González, Walter; Garcés, Alejandro; Montoya, Oscar Danilo; Hernández, Jesus C. (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 Potential Function for the Power Flow in DC Microgrids: An Analysis of the Uniqueness and Existence of the Solution and Convergence of the Algorithms
Garcés, Alejandro; Montoya O.-D. (Springer New York LLC, 2019)The power flow equations in DC microgrids are nonlinear due to the presence of constant power terminals. In this context, a rigorous demonstration of the convergence and uniqueness of the solution for Newton’s method is ... -
A Sequential Quadratic Programming Model for the Economic-Environmental Dispatch in MT-HVDC
Montoya O.D.; Gil-González, Walter; Garcés, Alejandro (Institute of Electrical and Electronics Engineers Inc., 2019)This paper addresses the economic-environmental dispatch problem for thermal plants on a Multi-terminal HVDC power grid. A multi-objective optimization approach is used for modeling the compromise between fuel costs and ... -
A successive approximations method for power flow analysis in bipolar DC networks with asymmetric constant power terminals
Montoya, Oscar Danilo; Gil-González, Walter; Garcés, Alejandro (Cartagena de Indias, 2022-07-02)This paper deals with the power flow problem in bipolar direct current distribution networks with unbalanced constant power loads. The effect of the neutral wire is considered in two prominent cases: (i) when the system ... -
Bilinear Control for Three-Phase Microgrids: A Proportional-Integral Passivity-Based Design
Gil-González, Walter; Montoya, Oscar D.; Garcés, Alejandro (Cartagena de IndiasCampus Tecnológico, 2020-07-30)A bilinear PI control based on passivity theory for the adequate integration of distributed energy resources (DERs) in ac microgrids is presented in this paper. DERs are integrated into the grid by voltage source converters ... -
DERs integration in microgrids using VSCs via proportional feedback linearization control: Supercapacitors and distributed generators
Montoya O.D.; Garcés, Alejandro; Serra F.M. (Elsevier Ltd, 2018)This paper presents an exact feedback linearization control strategy for voltage source converters (VSCs) applied to the integration of distributed energy resources (DERs) in smart distribution systems and microgrids. ... -
Distributed energy resources integration in AC Grids: A family of passivity-based controllers
Montoya, O.D.; Gil-González, Walter; Avila-Becerril, S.; Garcés, Alejandro; Espinosa-Pérez, G. (Universitat Politecnica de Valencia, 2019)This paper presents the design and application of passivity-based control theory for distributed energy resources (DERs) integration through voltage source converters (VSC) in ac single-phase grids. The Hamiltonian ... -
Indirect IDA-PBC for active and reactive power support in distribution networks using SMES systems with PWM-CSC
Montoya O.D.; Gil-González W.; Garcés, Alejandro; Espinosa-Pérez, G. (Elsevier Ltd, 2018)In this paper an indirect interconnection and damping assignment passivity-based control (IDA-PBC) applied to the three-phase superconducting magnetic energy storage systems (SMES) is proposed to support active and reactive ... -
Minimization of the distribution operating costs with D-STATCOMS: A mixed-integer conic model
Montoya, Oscar Danilo; Garcés, Alejandro; Gil-González, Walter (Cartagena de Indias, 2022-07-22)This paper addresses the problem of determining the optimal location and operation of distribution static synchronous compensators (D-STATCOMs) in power distribution networks. Metaheuristic algorithms have been conventionally ... -
Nonlinear Analysis for the Three-Phase PLL: A New Look for a Classical Problem
Bravo M.; Garcés, Alejandro; Montoya O.D.; Baier C.R. (Institute of Electrical and Electronics Engineers Inc., 2018)In this paper we investigate the dynamics of the classic synchronous reference frame phase-locked-loop (PLL) from a non-linear perspective. First, we demonstrate the nonlinear differential equations that describe the PLL ... -
Numerical methods for power flow analysis in DC networks: State of the art, methods and challenges
Montoya, Oscar Danilo; Gil-González, Walter; Garcés, Alejandro (Cartagena de Indias, 2020-12)This study addresses the power-flow-analysis problem for direct-current (DC) grids from a numerical perspective. Classical and emerging algorithms for power flow solutions in DC networks such as Gauss--Seidel, successive ... -
On the Conic Convex Approximation to Locate and Size Fixed-Step Capacitor Banks in Distribution Networks
Montoya, Oscar Danilo; Gil-González, Walter; Garcés, Alejandro (Cartagena de Indias, 2022-02-20)The problem of the optimal siting and sizing of fixed-step capacitor banks is studied in this research from the standpoint of convex optimization. This problem is formulated through a mixed-integer nonlinear programming ... -
Passivity-based control of islanded microgrids with unknown power loads
Avila Becerril, Sofia; Espinosa Pérez, Gerardo; Montoya, Oscar Danilo; Garcés, Alejandro (Cartagena de IndiasCampus TecnológicoIngeniería Eléctrica, 2020-10-12)In this paper, the control problem of microgrids (MGs)operating in islanded mode is approached from a passivity-based control perspective. A control scheme is proposed that, relying only on local measurements for the power ... -
PI-PBC Approach for Voltage Regulation in Cuk Converters with Adaptive Load Estimation
Montoya, Oscar; Gil-González, Walter; Garcés, Alejandro; Sierra, Federico; Hernandez, J.C. (Cartagena de Indias, 2020-11-25)This paper proposes a proportional-integral passivity-based controller (PI-PBC) for supporting voltage in linear loads integrated with Ćuk converters. An adaptive load estimator is also employed to avoid current measurements ... -
Power Flow in Bipolar DC Distribution Networks Considering Current Limits
Garcés, Alejandro; Montoya, Oscar Danilo (Cartagena de Indias, 2022-09)Power electronics converters are equipped with current controls that protect the converter from over-currents. This protection introduces non-differentiable equations into the power flow problem. The conventional Newton's ... -
Stabilization of MT-HVDC grids via passivity-based control and convex optimization
Montoya, Oscar Danilo; Gil-González, Walter; Garcés, Alejandro; Serra, Federico; Hernandez, Jesus C. (Cartagena de Indias, 2021-04-30)This paper presents a model for stabilizing multi-terminal high voltage direct-current (MT-HVDC) networks with constant power terminals (CPTs) interfaced with power electronic converters. A hierarchical structure of ...
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.