Exploració per autor "Riba Ruiz, Jordi-Roger"
Ara es mostren els items 24-43 de 168
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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. ... -
Classification of textile samples using data fusion combining near- and mid-infrared spectral information
Riba Ruiz, Jordi-Roger; Cantero, Rosa; Puig Vidal, Rita (Multidisciplinary Digital Publishing Institute (MDPI), 2022-07-29)
Article
Accés obertThere is an urgent need to reuse and recycle textile fibers, since today, low recycling rates are achieved. Accurate classification methods for post-consumer textile waste are needed in the short term for a higher circularity ... -
Closed-loop controller for eliminating the contact bounce in DC core contactors
García Espinosa, Antonio; Riba Ruiz, Jordi-Roger; Cusidó Roura, Jordi; Ortega Redondo, Juan Antonio; Romeral Martínez, José Luis (2010-09)
Article
Accés obertThe undesirable phenomenon of the contact bounce causes severe erosion of the contacts and, as a consequence, their electrical life and reliability are greatly reduced. On the other hand, the bounce of the armature can ... -
CNN-LSTM-based prognostics of bidirectional converters for electric vehicles’ machine
Rojas Dueñas, Gabriel; Riba Ruiz, Jordi-Roger; Moreno Eguilaz, Juan Manuel (Multidisciplinary Digital Publishing Institute (MDPI), 2021-10-26)
Article
Accés obertThis paper proposes an approach to estimate the state of health of DC-DC converters that feed the electrical system of an electric vehicle. They have an important role in providing a smooth and rectified DC voltage to ... -
Combined heat and power design based on environmental and cost criteria
González, Arnau; Riba Ruiz, Jordi-Roger; Rius Carrasco, Antoni (2016-10-22)
Article
Accés obertThis paper proposes a hybrid renewable energy system (HRES) consisting of photovoltaic (PV), wind and forest wood biomass power for cogeneration, and applies a multi-objective optimization methodology to study the trade-offs ... -
Comparative study of AC and positive and negative DC visual corona for sphere-plane gaps in atmospheric air
Riba Ruiz, Jordi-Roger; Morosini, Andrea; Capelli, Francesca (Multidisciplinary Digital Publishing Institute (MDPI), 2018-10-08)
Article
Accés obertDue to the expansion of high-voltage direct current (HVDC) power systems, manufacturers of high-voltage (HV) hardware for alternating current (ac) applications are focusing their efforts towards the HVDC market. Because ... -
Comparative Study of Multivariate Methods to Identify Paper Finishes Using Infrared Spectroscopy
Riba Ruiz, Jordi-Roger; Canals Parelló, Trini; Cantero Gómez, María Rosa (2012-03-09)
Article
Accés obertRecycled paper is extensively used worldwide. In the last decades its market has expanded considerably. The increasing use of recycled paper in papermaking has led to the production of paper containing several types of ... -
Composition determination of rubber blends by applying differential scanning calorimetry and SPA-PLS treatment
Riba Ruiz, Jordi-Roger; Mansilla, Marcela Ángela; Canals, Trini; Cantero, Rosa (2019-01-07)
Article
Accés obertThis paper proposes an innovative approach to determine the composition of natural rubber (NR) and styrene butadiene rubber (SBR) blends from the analysis of the data provided by the differential scanning calorimetry (DSC) ... -
Computationally efficient design and optimization approach of PMa-SynRM in frequent operating torque-speed range
López Torres, Carlos; García Espinosa, Antonio; Riba Ruiz, Jordi-Roger; Lux, Gerhard; Romeral Martínez, José Luis (2018-04-30)
Article
Accés restringit per política de l'editorialThis paper proposes a design process of permanent magnet assisted synchronous reluctance motors (PMa-SynRM) intended for vehicular propulsion. This approach takes into account range optimization and a multiphysics evaluation ... -
Corona discharge characteristics under variable frequency and pressure environments
Bas Calopa, Pau; Riba Ruiz, Jordi-Roger; Moreno Eguilaz, Juan Manuel (Multidisciplinary Digital Publishing Institute (MDPI), 2021-10-08)
Article
Accés obertMore electric aircrafts (MEAs) are paving the path to all electric aircrafts (AEAs), which make a much more intensive use of electrical power than conventional aircrafts. Due to the strict weight requirements, both MEA and ... -
Customized PMSM design and optimization methodology for water pumping applications
Candelo Zuluaga, Carlos Andres; Riba Ruiz, Jordi-Roger; García Espinosa, Antonio; Tubert Blanch, Pere (2021-06-11)
Article
Accés obertThe need to reduce water pumps size to achieve compact designs adapted to multiple working points opens new fields of study. PMSMs are the preferred choice due to outstanding torque-speed range capabilities. This paper ... -
DC-DC buck converter parameter identification based on a white-box approach
Balakrishnan, Hariharan; Moreno Eguilaz, Juan Manuel; Riba Ruiz, Jordi-Roger; Bogarra Rodríguez, Santiago; García Espinosa, Antonio (Institute of Electrical and Electronics Engineers (IEEE), 2018)
Comunicació de congrés
Accés obertThis paper proposes to use a white-box approach to identify the parameters of an electronic DC-DC buck converter. It discretizes the differential equations governing the dynamic of such system, which are used to identify ...