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  • Analytical dead-band compensation for ZCS modulation applied to hybrid Si-SiC dual active bridge 

    Capó Lliteras, Macià; Heredero Peris, Daniel; Díaz González, Francisco; Llonch Masachs, Marc; Montesinos Miracle, Daniel (Institute of Electrical and Electronics Engineers (IEEE), 2020-10-02)
    Article
    Open Access
    This paper proposes a triangular modulation with zero current switching (ZCS) for a hybrid Si-SiC isolated bidirectional DC-DC converter (IBDC). Three of the four legs in the IBDC operate at ZCS and use Si IGBTs, while the ...

  • Renewable energy auction prices: near subsidy-free? 

    Martín Cañadas, María Elena; Coronas Herrero, Sergio; Alonso Travesset, Alexandre; Hoz Casas, Jordi de la; Matas Alcalá, José (2020-07-01)
    Article
    Open Access
    The latest trend of low record bid prices in renewable energy auctions has raised concerns on the effective deployment of the winning projects. A survey of recent auction data from several countries, technologies and ...

  • Transition to a greener power sector: Four different scopes on energy security 

    Villafafila Robles, Roberto; Olivella Rosell, Pol; Rull Duran, Joan; Galceran Arellano, Samuel; Fuentes Ruiz, Sergio (Elsevier, 2020-06-01)
    Article
    Restricted access - publisher's policy
    Energy transitions have placed the power system in the center of the energy agenda, since electricity constitutes a bridge between renewable resources and the decarbonization of the global economy. Therefore, due to ...

  • Open-circuit fault diagnosis and maintenance in multi-pulse parallel and series TRU topologies 

    Saura Perisé, Jaime; Bakkar, Mostafa; Bogarra Rodríguez, Santiago (Institute of Electrical and Electronics Engineers (IEEE), 2020-02-27)
    Article
    Open Access
    Transformer Rectifier Units (TRUs) are a reliable way for DC generation in several electric applications. These units are formed by multiple three-phase uncontrolled bridge rectifiers connected according to two main ...

  • New sogi-fll grid frequency monitoring with a finite state machine approach for better response in the face of voltage sag and swell faults 

    Abdali Nejad, Sajad; Matas Alcalá, José; Martín Cañadas, María Elena; Hoz Casas, Jordi de la; Al-Turki, Y.A. (2020-04-01)
    Article
    Open Access
    The SOGI-FLL (Second-Order Generalized Integrator–Frequency-Locked Loop) is a well-known and simple adaptive filter that allows for estimating the parameters of grid voltage with a small computational burden. However, the ...

  • Principles of operation of grids of DC and AC subgrids interconnected by power converters 

    Gomis Bellmunt, Oriol; Sánchez Sánchez, Enric; Arévalo Soler, Josep; Prieto Araujo, Eduardo (Institute of Electrical and Electronics Engineers (IEEE), 2020-06-15)
    Article
    Restricted access - publisher's policy
    The concept of segmented AC power systems interconnected by means of HVDC is becoming more and more significant for many cases worldwide. Such systems are already existing and will become more complex with the increasing ...

  • Evaluación de riesgos ocupacionales de los trabajadores de la minería española (2018) 

    Freijo Álvarez, Modesto; Sanmiquel Pera, Lluís; Montañá Puig, Juan; Romero Durán, David; Bergas Jané, Joan Gabriel (2020-10-01)
    Article
    Open Access
    El sector minero español puede clasificarse en dos tipos, minería energética y no energética. La actividad minera implica riesgos para la salud y seguridad en el trabajo.En este estudio se ha evaluado los ...

  • Non-linear least squares optimization for parametric identification of DC-DC converters 

    Rojas Dueñas, Gabriel; Riba Ruiz, Jordi-Roger; Moreno Eguilaz, Juan Manuel (Institute of Electrical and Electronics Engineers (IEEE), 2020-06-19)
    Article
    Open Access
    Switching mode power converters are being extensively applied in different power conversion systems. Parameter identification comprises a set of techniques focused on extracting the relevant parameters of the converters ...

  • Interaction assessment and stability analysis of the MMC-based VSC-HVDC link 

    Dadjo Tavakoli, Saman; Prieto Araujo, Eduardo; Sánchez Sánchez, Enric; Gomis Bellmunt, Oriol (2020-04-21)
    Article
    Open Access
    This paper investigates the dynamic behavior of a modular multi-level converter (MMC)-based HVDC link. An overall state-space model is developed to identify the system critical modes, considering the dynamics of the master ...

  • Stability analysis of systems with high VSC penetration: where is the limit? 

    Collados Rodríguez, Carlos; Cheah Mañé, Marc; Prieto Araujo, Eduardo; Gomis Bellmunt, Oriol (Institute of Electrical and Electronics Engineers (IEEE), 2019-12-16)
    Article
    Restricted access - publisher's policy
    The paper addresses the stability of modern voltage-source-converter-dominated power systems, which are experiencing a progressive phase-out of conventional generation. An essential system model is used to capture the ...

  • International tendencies on energy security: a review on national energy policies in the electrical sector 

    Fuentes Ruiz, Sergio; Villafafila Robles, Roberto; Olivella Rosell, Pol (2019-05-03)
    Article
    Open Access
    Energy security constitutes a priority within national energy policies. The international trend of energy transitions has fostered electrification of the energy systems, so it results imperative to study how the concept ...

  • Run to failure: aging of commercial battery cells beyond their end of life 

    Andreas, Ziegler; Oeser, David; Hein, Thiemo; Montesinos Miracle, Daniel; Ackva, Ansgar (2020-04-11)
    Article
    Open Access
    The aim of this work is to age commercial battery cells far beyond their expected lifetime. There is a gap in the literature regarding run to failure tests of lithium-ion batteries that this work intends to address. ...

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