Exploració per autor "Riba Ruiz, Jordi-Roger"
Ara es mostren els items 13-32 de 168
-
Analysis and mitigation of stray capacitance effects in resistive high-voltage dividers
Riba Ruiz, Jordi-Roger; Capelli, Francesca; Moreno Eguilaz, Juan Manuel (Multidisciplinary Digital Publishing Institute (MDPI), 2019-06-14)
Article
Accés obertThis work analyzes the effects of the parasitic or stray distributed capacitance to ground in high-voltage environments and assesses the effectiveness of different corrective actions to minimize such effects. To this ... -
Analysis of a smart sensor based solution for smart grids real-time dynamic thermal line rating
Liu, Yuming; Riba Ruiz, Jordi-Roger; Moreno Eguilaz, Juan Manuel; Sanllehí Muñoz, Josep (Multidisciplinary Digital Publishing Institute (MDPI), 2021-11-06)
Article
Accés obertDynamic thermal line rating (DTLR) allows us to take advantage of the maximum transmission capacity of power lines, which is an imperious need for future smart grids. This paper proposes a real-time method to determine the ... -
Analysis of capacitance to ground formulas for different high-voltage electrodes
Riba Ruiz, Jordi-Roger; Capelli, Francesca (2018-01-01)
Article
Accés obertStray capacitance can seriously affect the behavior of high-voltage devices, including voltage dividers, insulator strings, modular power supplies, or measuring instruments, among others. Therefore its effects must be ... -
Analysis of demagnetization faults in surface-mounted permanent magnet synchronous motors with symmetric windings
Urresty Betancourt, Julio César; Riba Ruiz, Jordi-Roger; Saavedra Ordóñez, Harold; Romeral Martínez, José Luis (IEEE Press. Institute of Electrical and Electronics Engineers, 2011)
Text en actes de congrés
Accés restringit per política de l'editorialThis paper analyzes a surface-mounted permanent magnet synchronous motor with symmetric winding configuration running under demagnetization fault. The analysis is based on 2D FEM simulations which includes rotor magnet ... -
Analysis of demagnetization faults in surface-mounted permanent magnet synchronous with inter-turns and phase-to-ground short-circuits
Urresty Betancourt, Julio César; Riba Ruiz, Jordi-Roger; Romeral Martínez, José Luis; Saavedra Ordóñez, Harold (2012)
Text en actes de congrés
Accés restringit per política de l'editorialDemagnetization faults are troublesome in permanent magnet synchronous motors since they may greatly reduce their performance and efficiency. Additionally, the temperature of the magnets deeply influences the remanent flux ... -
Analysis of formulas to calculate the AC inductance of different nonmagnetic conductors' configurations
Capelli, Francesca; Riba Ruiz, Jordi-Roger (2016-10-16)
Article
Accés obert -
Analysis of formulas to calculate the AC resistance of different conductors' configurations
Riba Ruiz, Jordi-Roger (2015-10-01)
Article
Accés obertSkin and proximity effects in single- or multi-conductor systems can notoriously affect the AC resistance in conductors intended for electrical power transmission and distribution systems and for electronic devices. This ... -
Analyzing the effect of dynamic pressure drop on corona discharges for aircraft applications
Bas Calopa, Pau; Riba Ruiz, Jordi-Roger; Moreno Eguilaz, Juan Manuel (Multidisciplinary Digital Publishing Institute (MDPI), 2023-03-22)
Article
Accés obertThe combination of the low-pressure environment found in aircraft systems and the gradual electrification of aircraft increases the risk of electrical discharges occurrence. This is an undesirable situation that compromises ... -
Application of image sensors to detect and locate electrical discharges: a review
Riba Ruiz, Jordi-Roger (Multidisciplinary Digital Publishing Institute (MDPI), 2022-08-06)
Article
Accés obertToday, there are many attempts to introduce the Internet of Things (IoT) in high-voltage systems, where partial discharges are a focus of concern since they degrade the insulation. The idea is to detect such discharges at ... -
Application of reduced scale tests to improve the thermal performance of high-voltage substation connectors
Abomailek Rubio, Basel Carlos; Riba Ruiz, Jordi-Roger; Casals Torrens, Pau (2018-11-02)
Article
Accés obert -
Application of the zero-sequence voltage component to detect stator winding inter-turn faults in PMSMs
Urresty Betancourt, Julio César; Riba Ruiz, Jordi-Roger; Romeral Martínez, José Luis (2012-08)
Article
Accés restringit per política de l'editorialThis paper develops and analyzes a methodology for detecting stator winding inter-turn faults in surface-mounted permanent magnet synchronous motors. The proposed methodology is based on monitoring the zero-sequence voltage ... -
Application of Thermoelectric Generators for Low-Temperature-Gradient Energy Harvesting
Liu, Yuming; Riba Ruiz, Jordi-Roger; Moreno Eguilaz, Juan Manuel; Sanllehí Muñoz, Josep (Multidisciplinary Digital Publishing Institute, 2023-02-17)
Article
Accés obertThermoelectric generators (TEGs) convert a temperature difference into useful direct current (DC) power. TEGs are solid-state semiconductor devices that are generating a lot of interest for energy harvesting purposes in ... -
Arc fault protections for aeronautic applications: a review identifying the effects, detection methods, current progress, limitations, future challenges, and research needs
Riba Ruiz, Jordi-Roger; Moreno Eguilaz, Juan Manuel; Ortega Redondo, Juan Antonio (2022-01-11)
Article
Accés obertArc faults are serious discharges, damaging insulation systems and triggering electrical fires. This is a transversal topic, affecting from residential to aeronautic applications. Current commercial aircrafts are being ... -
Arc tracking control in insulation systems for aeronautic applications: challenges, opportunities, and research needs
Riba Ruiz, Jordi-Roger; Gómez Pau, Álvaro; Moreno Eguilaz, Juan Manuel; Bogarra Rodríguez, Santiago (Multidisciplinary Digital Publishing Institute (MDPI), 2020-03-16)
Article
Accés obertNext generation aircrafts will use more electrical power to reduce weight, fuel consumption, system complexity and greenhouse gas emissions. However, new failure modes and challenges arise related to the required voltage ... -
Black-box modeling of DC-DC converters based on wavelet convolutional neural networks
Rojas Dueñas, Gabriel; Riba Ruiz, Jordi-Roger; Moreno Eguilaz, Juan Manuel (2021-07-19)
Article
Accés obertThis paper presents an offline deep learning approach focused to model and identify a 270 V-to-28 V DC-DC step-down converter used in on-board distribution systems of more electric aircrafts (MEA). Manufacturers usually ... -
Black-box modelling of a DC-DC buck converter based on a recurrent neural network
Rojas Dueñas, Gabriel; Riba Ruiz, Jordi-Roger; Moreno Eguilaz, Juan Manuel; Kadechkar, Akash; Gómez Pau, Álvaro (Institute of Electrical and Electronics Engineers (IEEE), 2020)
Comunicació de congrés
Accés obertNeural network; Power converter; Training; Prediction; System identification; Black-box model -
Calculation of the ac to dc resistance ratio of conductive nonmagnetic straight conductors by applying FEM simulations
Riba Ruiz, Jordi-Roger (2015-09-01)
Article
Accés obertThis paper analyzes the skin and proximity effects in different conductive nonmagnetic straight conductors’ configurations subjected to applied alternating currents and voltages. These effects have important consequences, ... -
Calculation of the inductance of conductive nonmagnetic conductors by means of finite element method simulations
Riba Ruiz, Jordi-Roger; Capelli, Francesca (2018-09-13)
Article
Accés obertThis article analyzes the inductance of different conductive nonmagnetic conductors’ configurations under alternating current (AC) supply. The inductance is a key design parameter in tracks of electronic devices, power ... -
Characterizing the temperature dependence of the contact resistance in substation connectors
Riba Ruiz, Jordi-Roger; Martínez Reyes, Jimmy Arturo; Moreno Eguilaz, Juan Manuel; Capelli, Francesca (Elsevier, 2021-04)
Article
Accés obertThe electrical resistance, and in particular, the electrical contact resistance (ECR), plays a critical role in the electrical and thermal behaviors of substation connectors. Despite its impact, there are very few research ... -
Circular economy of post-consumer textile waste: classification through infrared spectroscopy
Riba Ruiz, Jordi-Roger; Cantero, Rosa; Canals, Trini; Puig Vidal, Rita (2020-11-01)
Article
Accés obertThe textile and fashion industry is amongst the most resource-intensive and polluting industries, thus impacting the natural environment. During the last decades, there has been an increase in the manufacturing of textiles. ...