Ara es mostren els items 1-17 de 17

  • A multi-objective GA to demand-side management in an automated warehouse 

    Cárdenas Araújo, Juan José; García Espinosa, Antonio; Romeral Martínez, José Luis; Urresty Betancourt, Julio César (2009)
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    The 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 ...
  • 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)
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    This 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)
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    Demagnetization 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 ...
  • 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'editorial
    This 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 ...
  • Condition monitoring system for characterization of electric motor ball bearings with distributed fault using fuzzy inference tools 

    Navarro, L.; Delgado Prieto, Miquel; Urresty Betancourt, Julio César; Cusido Roura, Jordi; Romeral Martínez, José Luis (2010-05-06)
    Article
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    The present work shows a condition monitoring system applied to electric motors ball bearings. Unlike most of the previous work on this area, which is mainly focused on the location of single-point defects in bearing ...
  • Detection of demagnetization faults in surface-mounted permanent magnet synchronous motors by means of the zero-sequence voltage component 

    Urresty Betancourt, Julio César; Riba Ruiz, Jordi-Roger; Delgado Prieto, Miquel; Romeral Martínez, José Luis (2012-03-01)
    Article
    Accés restringit per política de l'editorial
    This paper develops and analyzes an online methodology to detect demagnetization faults in surface-mounted permanent magnet synchronous motors. The proposed methodology, which takes into account the effect of the inverter ...
  • Detection of inter-turns short circuits in permanent magnet synchronous motors operating under transient conditions by means of the zero sequence voltage 

    Urresty Betancourt, Julio César; Riba Ruiz, Jordi-Roger; Saavedra Ordóñez, Harold; Romeral Martínez, José Luis (2011)
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    This work proposes the zero sequence voltage component (ZSVC) of the stator three-phase voltages as a method for detecting winding inter-turns short circuits in permanent magnet synchronous motors PMSM operating under ...
  • Detection of interturn faults in PMSMs with different winding configuration 

    Saavedra Ordóñez, Harold; Urresty Betancourt, Julio César; Riba Ruiz, Jordi-Roger; Romeral Martínez, José Luis (2014-03-03)
    Article
    Accés restringit per política de l'editorial
    Interturn faults in permanent magnet synchronous motors (PMSMs) may develop fast into more severe faults such as coil-to-coil, phase-to-phase and phase-to-ground short circuits. These faults are very destructive and may ...
  • Electrical and magnetic faults diagnosis in permanent magnet synchronous motors 

    Urresty Betancourt, Julio César (Universitat Politècnica de Catalunya, 2012-09-21)
    Tesi
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    Permanent magnet synchronous motors (PMSMs) are an alternative in critical applications where high-speed operation, compactness and high efficiency are required. In these applications it is highly desired to dispose of ...
  • Evaluation of machine learning techniques for electro-mechanical system diagnosis 

    Delgado Prieto, Miquel; García Espinosa, Antonio; Urresty Betancourt, Julio César; Riba Ruiz, Jordi-Roger; Ortega Redondo, Juan Antonio (IEEE Press. Institute of Electrical and Electronics Engineers, 2011)
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    The application of intelligent algorithms, in electro-mechanical diagnosis systems, is increasing in order to reach high Reliability and performance ratios in critical and complex scenarios. In this context, different ...
  • Fault detection in dynamic conditions by means of discrete wavelet decomposition for PMSM running under bearing damage 

    Rosero García, Javier Alveiro; Romeral Martínez, José Luis; Rosero, Esteban; Urresty Betancourt, Julio César (IEEE Press. Institute of Electrical and Electronics Engineers, 2009)
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    This paper presents a study of the Permanent Magnet Synchronous Machine (PMSM) running under bearing damage. To carry out the study a two-dimensional (2-D) Finite Element Analysis (FEA) is used. Stator current induced ...
  • Feature extraction of demagnetization faults in permanent-magnet synchronous motors based on box-counting fractal dimension 

    Delgado Prieto, Miquel; García Espinosa, Antonio; Riba Ruiz, Jordi-Roger; Urresty Betancourt, Julio César; Ortega Redondo, Juan Antonio (IEEE Press. Institute of Electrical and Electronics Engineers, 2011-05)
    Article
    Accés restringit per política de l'editorial
    This paper presents a methodology for feature extraction of a new fault indicator focused on detecting demagnetization faults in a surface-mounted permanent-magnet synchronous motors operating under nonstationary conditions. ...
  • Modeling of surface-mounted permanent magnet synchronous motors with stator winding inter-turn faults 

    Romeral Martínez, José Luis; Urresty Betancourt, Julio César; Riba Ruiz, Jordi-Roger; García Espinosa, Antonio (IEEE Press. Institute of Electrical and Electronics Engineers, 2011-05-29)
    Article
    Accés restringit per política de l'editorial
    This paper develops and analyzes a parametric model for simulating healthy and faulty surface-mounted permanent magnet synchronous motors. It allows studying the effects of stator winding interturn short-circuit faults. ...
  • Motor fault classification system including a novel hybrid feature reduction methodology 

    Delgado Prieto, Miquel; Urresty Betancourt, Julio César; Albiol, L.; Ortega Redondo, Juan Antonio; García Espinosa, Antonio; Romeral Martínez, José Luis; Vidal, E. (2011)
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    The fault diagnosis field is in a continuous movement towards the generation of more reliable and powerful machine health monitoring schemes. Improved data processing methodologies are required to reach high diagnosis ...
  • Runout tracking in electric motors using self-mixing interferometry 

    Atashkhooei, Reza; Urresty Betancourt, Julio César; Royo Royo, Santiago; Riba Ruiz, Jordi-Roger; Romeral Martínez, José Luis (IEEE Industrial Electronics Society, 2014-01-17)
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    Accés restringit per política de l'editorial
  • Shaft trajectory analysis in a partially demagnetized permanent magnet synchronous motor 

    Urresty Betancourt, Julio César; Atashkhooei, Reza; Riba Ruiz, Jordi-Roger; Romeral Martínez, José Luis; Royo Royo, Santiago (Institute of Electrical and Electronics Engineers (IEEE), 2013-08-01)
    Article
    Accés restringit per política de l'editorial
    Abstract—Demagnetization faults have a negative impact on the behavior of permanent-magnet synchronous machines, thus reducing their efficiency, generating torque ripple, mechanical vibrations, and acoustic noise, ...
  • Stator short circuits detection in PMSM by means of higher order spectral analysis (HOSA) 

    Rosero García, Javier Alveiro; Ortega Redondo, Juan Antonio; Urresty Betancourt, Julio César; Cárdenas Araújo, Juan José; Romeral Martínez, José Luis (IEEE Press. Institute of Electrical and Electronics Engineers, 2009)
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    This paper presents and analyzed short circuit failures for Permanent Magnet Synchronous Motor (PMSM). The study includes stated and dynamic condition for experimental and simulation test. The stator current is analyzed ...