Exploració per tema "Losses"

Ara es mostren els items 1-11 de 11

    • Automatización del sistema de obtención de las curvas par-velocidad en motores de reluctancia auto conmutados (SRM) e híbridos (HRM) 

      Duarte Mejía, Josué Neftalí (Universitat Politècnica de Catalunya, 2021-02-04)
      Projecte Final de Màster Oficial
      Accés obert
      En la actualidad, los motores de reluctancia autoconmutados (SRM) y algunas de sus variaciones que implementan imanes permanentes en su estructura magnética (motores HRM) son motores que están adquiriendo un gran interés ...

    • Curva de excedencia de pérdidas híbrida para la representación del riesgo 

      Velázquez, César; Cardona, Omar Darío; Yamín Lacouture, Luis Eduardo; Mora Cuevas, Miguel; Barbat Barbat, Horia Alejandro (Copicentro, 2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This article describes a risk analysis methodology that uses, in one hand, empiric estimations of recurrence based on information available in local disaster data bases, with which it is possible to estimate the loss ...

    • Design optimization of switching-cell-array-based power converters 

      Rafiezadeh, Roya; Busquets Monge, Sergio; Alepuz Menéndez, Salvador (2022)
      Text en actes de congrés
      Accés obert
      With the aim to increase standardization, reduce the cost, and obtain advanced performance features, the design of voltage-source power converter legs can be undertaken by combining several instances of a standard switching ...

    • Efficiency analysis of wide band-gap semiconductors for two-level and three-level power converters 

      Lumbreras Carrasco, David; Zaragoza Bertomeu, Jordi; Mon González, Juan; Gálvez, Eduardo; Collado Escolano, Alfonso (Institute of Electrical and Electronics Engineers (IEEE), 2019)
      Comunicació de congrés
      Accés obert
      Power devices based on wide band-gap materials are emerging as alternatives to silicon-based devices. These new devices allow designing and building converters with fewer power losses, and are thus more highly efficient ...

    • High-frequency spread-spectrum modulations for wide-bandgap voltage source converters 

      Lumbreras Carrasco, David; Zaragoza Bertomeu, Jordi; Berbel Artal, Néstor; Mon González, Juan; Galvez Moreno, Eduardo; Collado Escolano, Alfonso (Institute of Electrical and Electronics Engineers (IEEE), 2021)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      The high efficiency and the electromagnetic com- patibility of wide-bandgap (WBG) power converters can be further improved using spread-spectrum (SS) modulations. This paper evaluates and compares the impact of SS techniques ...

    • Influence of equivalent circuit resistances on operating parameters on three-phase induction motors with powers up to 50 kw 

      Torrent Burgués, Marcel; Blanqué Molina, Balduino (2021-11-01)
      Article
      Accés obert
      This work shows the results obtained from studying the influence of equivalent circuit resistances on three-phase induction motors. The stator resistance, rotor resistance, and iron losses resistance affect the different ...

    • Modular multilevel converter losses model for HVdc applications 

      Antonio Ferreira, Abel; Gomis Bellmunt, Oriol (2017-05-01)
      Article
      Accés obert
      Multi-terminal high voltage dc (HVdc) grids can eventually became a feasible solution to transport energy to remote and/ or distant areas and its exploitation depend, among other things, on the performance of the converter ...

    • Modulation techniques applied to medium voltage modular multilevel converters for renewable energy integration: A review 

      Antonio Ferreira, Abel; Gomis Bellmunt, Oriol; Collados Rodríguez, Carlos (2018-02-01)
      Article
      Accés obert
      Modular multilevel converters (MMC) inherent features are gaining more attention for dc voltage transmission systems. One of the main research paths regarding the converter performance deals with its voltage modulation. ...

    • Propagation modes in lossy cylindrical structures 

      Ferrando Bataller, Miquel (Institute of Electrical and Electronics Engineers (IEEE), 1999)
      Text en actes de congrés
      Accés obert
      The purpose of this communication is to calculate the orders of the Bessel functions that satisfies the equation f/sub v/(r)=J/sub v/(k/sub r//spl middot/r)+A/sub v//spl middot/Y/sub v/(k/sub r//spl middot/r) when the ...

    • Thermoelastic damping losses in BAW resonators 

      Udaondo Guerrero, Carlos (Universitat Politècnica de Catalunya, 2018-07-26)
      Projecte Final de Màster Oficial
      Accés restringit per acord de confidencialitat

    • Time-domain computation of rotational iron losses considering the bulk conductivity for PMSMs 

      Asef, Pedram; Bargalló Perpiñá, Ramón; Lapthorn, Andrew (2019-06-01)
      Article
      Accés restringit per política de l'editorial
      This study investigates an advanced finite-element (FE) technique for the evaluation of rotational iron losses basedon a time-domain computation, where the bulk conductivity of the core materials is considered. The iron-loss ...