Exploració per autor "Riba Ruiz, Jordi-Roger"
Ara es mostren els items 5-24 de 168
-
A model to calculate the current–temperature relationship of insulated and jacketed cables
Riba Ruiz, Jordi-Roger; Llauradó Coca, Jordi (Multidisciplinary Digital Publishing Institute (MDPI), 2022-09-30)
Article
Accés obertThis paper proposes and validates using experimental data a dynamic model to determine the current–temperature relationship of insulated and jacketed cables in air. The model includes the conductor core, the inner insulation ... -
A revised solution for a sphere rolling in a vertical loop
Bertran Cànovas, Òscar; Riba Ruiz, Jordi-Roger (2020-09-30)
Article
Accés obertIn this paper the classical well known solution of the elementary problem of the sphere loop in the presence of friction is studied. Also, a modification of the problem shows a possible inaccuracy involved on the well known ... -
An eddy-current-based sensor for preventing knots in metallic wire drawing processes
Esteban Dalmau, Bernat; Riba Ruiz, Jordi-Roger; Baquero Armans, Grau (2011-04-07)
Article
Accés obertDuring metallic wire drawing processes, the presence of knots and the failure to detect them can lead to long production interruptions, significant economic losses and a lower quality of final product. Consequently, there ... -
An educational tool to assist the design process of switched reluctance machines
Riba Ruiz, Jordi-Roger; Romero, Itamar; García Espinosa, Antonio (2016-07-13)
Article
Accés obertThe design of electric machines is a hot topic in the syllabuses of several undergraduate and graduate courses. With the development of hybrid and electrical vehicles, this subject is gaining more popularity, especially ... -
An evaluation of the life cycle cost of rapeseed oil as a straight vegetable oil fuel to replace petroleum diesel in agriculture
Baquero Armans, Grau; Esteban Dalmau, Bernat; Riba Ruiz, Jordi-Roger; Rius Carrasco, Antoni; Puig Vidal, Rita (2011-08)
Article
Accés obertThe use of straight vegetable oil (SVO) as biofuel has been recognized as a valid substitute of diesel fuel in the agricultural sector under specific circumstances. Its direct use reduces most of the chemical processes ... -
An introduction to fault diagnosis of permanent magnet synchronous machines in master's degree courses
Riba Ruiz, Jordi-Roger; García Espinosa, Antonio; Romeral Martínez, José Luis; Ortega Redondo, Juan Antonio (John Wiley & Sons, 2010-08-16)
Article
Accés restringit per política de l'editorialEarly fault detection and diagnosis of high-performance electric motors has been an active area of research for the past two decades. This work presents a practical session that facilitates instructing students in this ... -
Analysing the influence of geometry and pressure on corona discharges
Riba Ruiz, Jordi-Roger; Bas Calopa, Pau; Moreno Eguilaz, Juan Manuel (2022-06-14)
Article
Accés obertIn this work, the authors propose an experiment aimed for undergraduate laboratories with the aim of introducing different novelties as a topic for practical sessions or student projects. The topics here investigated are ... -
Analysing the pressure effect on the contact resistance of electrical connections
Riba Ruiz, Jordi-Roger; Bas Calopa, Pau (2022-02-17)
Article
Accés obertWe propose an experiment intended for undergraduate laboratories, with the aim to introduce different novelties as a subject for a practical session or students project. We deal with the different components of the resistance ... -
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 ...