Browsing by Author "García Espinosa, Antonio"
Now showing items 1-20 of 55
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A combined methodology of adaptive neuro-fuzzy inference system and genetic algorithm for short-term energy forecasting
(2014-02)
Article
Open AccessThis document presents an energy forecast methodology using Adaptive Neuro-Fuzzy Inference System (ANFIS) and Genetic Algorithms (GA). The GA has been used for the selection of the training inputs of the ANFIS in order to ... -
A computer model for teaching the dynamic behavior of AC contactors
(2010-05)
Article
Open AccessAC-powered contactors are extensively used in industry in applications such as automatic electrical devices, motor starters, and heaters. In this work, a practical session that allows students to model and simulate the ... -
A genetic algorithm approach to optimization of power peaks in an automated warehouse
(IEEE Press. Institute of Electrical and Electronics Engineers, 2009)
Conference report
Open AccessThe simultaneous operation of the automated storage and retrieval machines (ASRs) in an automated warehouse can increase the likelihood that high power demand peaks turn unstable the electric system. Furthermore, high ... -
A multi-objective GA to demand-side management in an automated warehouse
(2009)
Conference report
Open AccessThe simultaneous operation of the automated storage and retrieval machines (ASRs) in an automated warehouse can increase the likelihood that high power demand peaks turn unstable the electric system. Furthermore, high ... -
A new auto-provisioned squat-based traffic management strategy for multiclass networks
(2009)
Conference report
Open AccessIn search of being able to offer better quality of service (QoS) in multiclass networks, a strategy that aims to allow resources between different classes of service (CoS) to be shared according to the class’s needs and ... -
A novel condition monitoring scheme for bearing faults based on Curvilinear Component Analysis and hierarchical neural networks
(2012)
Conference report
Restricted access - publisher's policyMostly the faults in electrical machines are related with the bearings. Thus, a reliable bearing condition monitoring scheme able to detect either local or distributed defects are mandatory to avoid a breakdown in the ... -
Accurate Bearing Faults Classification based on Statistical-Time Features, Curvilinear Component Analysis and Neural Networks
(2012)
Conference report
Restricted access - publisher's policyBearing faults are the commonest form of malfunction associated with electrical machines. So far, the research has been carried out mainly in the detection of localized faults, but the diagnosis of distributed faults ... -
An educational tool to assist the design process of switched reluctance machines
(2016-07-13)
Article
Open AccessThe 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 introduction to fault diagnosis of permanent magnet synchronous machines in master's degree courses
(John Wiley & Sons, 2010-08-16)
Article
Restricted access - publisher's policyEarly 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 ... -
Analyzing the temperature and frequency dependence of eddy currents in transformer windings
(Elsevier, 2024-08)
Article
Open AccessEddy current effects, which include skin and proximity effects, are usually associated only with frequency, but they are also affected by temperature. This paper analyzes the effect of both, temperature and frequency on ... -
AUTOMATITZACIÓ INDUSTRIAL (2n quadrimestre, 1r parcial)
(Universitat Politècnica de Catalunya, 2011-04-14)
Exam
Restricted access to the UPC academic community -
Bearing fault detection by a novel condition-monitoring scheme based on statistical-time features and neural networks
(Institute of Electrical and Electronics Engineers (IEEE), 2013-08)
Article
Restricted access - publisher's policyBearing degradation is the most common source of faults in electrical machines. In this context, this work presents a novel monitoring scheme applied to diagnose bearing faults. Apart from detecting local defects, i.e., ... -
Closed-loop controller for eliminating the contact bounce in DC core contactors
(2010-09)
Article
Open AccessThe 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 ... -
Computationally efficient design and optimization approach of PMa-SynRM in frequent operating torque-speed range
(2018-04-30)
Article
Restricted access - publisher's policyThis 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 ... -
Constrained-size torque maximization in SynRM machines by means of genetic algorithms
(2015)
Conference report
Restricted access - publisher's policySynchronous Reluctance Motors have always been an alternative to more mainstream machines such as the Permanent Magnet Synchronous Motor, but until recently they have not found their right place in industrial applications. ... -
Curso práctico de microprocesadores con metodología semipresencial
(Universitat Politècnica de Catalunya, 2004)
Conference report
Open AccessEl objetivo final de esta experiencia es mejorar la docencia impartida por el Departamento de Ingeniería Electrónica en el Campus de Terrassa de la UPC en el área de microprocesadores. La mejora tiene dos ejes fundamentales, ... -
Custom integer optimization method for wire bundle dimensioning
(Institute of Electrical and Electronics Engineers (IEEE), 2016)
Conference report
Open AccessAutomotive wiring harnesses have gained weight and complexity through the last decades due to the increasing number of electrical components, which has raised the interest on its weight optimization. For this purpose, ... -
Customized PMSM design and optimization methodology for water pumping applications
(2021-06-11)
Article
Open AccessThe 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
(Institute of Electrical and Electronics Engineers (IEEE), 2018)
Conference lecture
Open AccessThis 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 ... -
Demagnetization diagnosis in permanent magnet synchronous motors under non-stationary speed conditions
(2010-10)
Article
Restricted access - publisher's policyPermanent magnet synchronous motors (PMSMs) are applied in high performance positioning and variable speed applications because of their enhanced features with respect to other AC motor types. Fault detection and diagnosis ...
