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  • Real-time optimization-based reference calculation integrated control for MMCs considering converter limitations 

    Westerman Spier, Daniel; Rodriguez Bernuz, Joan Marc; Prieto Araujo, Eduardo; López Mestre, Joaquim; Junyent Ferré, Adrià; Gomis Bellmunt, Oriol (Institute of Electrical and Electronics Engineers (IEEE), 2021-10-12)
    Article
    Open Access
    The paper addresses a real-time optimization-based reference calculation integrated with a control structure for Modular Multilevel Converters (MMC) operating under normal and constrained situations (where it has reached ...
  • Optimal H-infinity control design for MMC-based HVDC links 

    Dadjo Tavakoli, Saman; Fekriasl, Sajjad; Prieto Araujo, Eduardo; Beerten, Jef; Gomis Bellmunt, Oriol (Institute of Electrical and Electronics Engineers (IEEE), 2021-04-06)
    Article
    Open Access
    The modular multilevel converter (MMC) has emerged as the preferred choice for voltage source converter (VSC)-based high voltage direct current (HVDC) systems due to its low losses, low harmonic distortion, modularity, and ...
  • Improved current reference calculation for MMCs internal energy balancing control 

    Westerman Spier, Daniel; Prieto-Araujo, E.; López Mestre, Joaquim; Gomis Bellmunt, Oriol (Institute of Electrical and Electronics Engineers (IEEE), 2021-06-22)
    Article
    Open Access
    The paper addresses an improved inner current reference calculation to be employed in the control of modular multilevel converters operating during either balanced or unbalanced conditions. The suggested reference calculation ...
  • Methodology for interaction identification in modular multi-level converter-based HVDC systems 

    Dadjo Tavakoli, Saman; Prieto Araujo, Eduardo; Sánchez Sánchez, Enric; Gomis-Bellmunt, Oriol (2021-07-24)
    Article
    Restricted access - publisher's policy
    This paper suggests a methodology for the identification, classification, and evaluation of various types of interactions that may occur in an HVDC link based on modular multi-level converters (MMC). The methodology ...
  • New methodology to calculate DC voltage signature in n-phases TRUs under supply voltage sags 

    Saura Perisé, Jaime; Bakkar, Mostafa; Bogarra Rodríguez, Santiago (Institute of Electrical and Electronics Engineers (IEEE), 2022-02-28)
    Article
    Open Access
    A new methodology based on the shadow projection has been developed to study any multipulse rectifier's dynamic behavior under balanced and unbalanced conditions. The proposed methodology calculates the DC average voltage ...
  • Optimization-based reference calculation for Modular Multilevel Converters in balanced and unbalanced network conditions 

    Westerman Spier, Daniel; Prieto-Araujo, E.; López Mestre, Joaquim; Gomis-Bellmunt, Oriol (Institute of Electrical and Electronics Engineers (IEEE), 2021)
    Conference lecture
    Open Access
    The paper addresses an optimization-based algorithm to calculate the references of the Modular Multilevel Converter (MMC) during normal and constrained scenarios (when the prioritization of quantities is required). The ...
  • Integration of Distributed Energy Resources to Unbalanced Grids under Voltage Sags with Grid Code Compliance 

    Rolán Blanco, Alejandro; Bogarra Rodríguez, Santiago; Bakkar, Mostafa (2022-01-01)
    Article
    Restricted access - publisher's policy
    The aim of this paper is to analyze the situations in which distributed power generation systems (DPGSs) based on renewable energy sources (RESs) can be controlled when operating under voltage sags. Analytical models for ...
  • An Improved hybrid DC circuit breaker with self-adaptive fault current limiting capability 

    Lyu, Huijie; He, Jiawei; Li, Bin; Li, Ye; Westerman Spier, Daniel; Prieto Araujo, Eduardo; Gomis Bellmunt, Oriol (Institute of Electrical and Electronics Engineers (IEEE), 2022-04-01)
    Article
    Open Access
    The effective fault current limiting is very significant for the dc distribution system. However, the traditional dc fault current limiting method, i.e., directly installing dc reactor, may trigger negative impacts the ...
  • Corona discharges from grounded rods under high ambient electric field and lightning activity 

    Sousa Arcanjo, Marcelo Augusto; Montanya Puig, Joan; Urbani, Michele; Fontanes Molina, Pol; Lorenzo, Victor; Pons Montserrat, Enric (2021)
    Conference report
    Open Access
    We assess results of corona pulses detected under high background electric field in the laboratory and in the field in two different experimental sites. The first location is on the roof of a regular building, and the ...
  • Steady-state impedance mapping in grids with power electronics: What is grid strength in modern power systems? 

    Gomis Bellmunt, Oriol; Song, Jie; Cheah Mañé, Marc; Prieto Araujo, Eduardo (2022-03-01)
    Article
    Open Access
    The paper analyzes grid strength and grid impedance for systems with significant penetration of power electronics. The work shows that the traditionally employed Thévenin equivalent cannot capture the different saturation ...
  • Experiments with a tethered drone to investigate induced charges on a vertically arranged conductor during fair weather 

    Sousa Arcanjo, Marcelo Augusto; Fontanes Molina, Pol; Urbani, Michele; Montanya Puig, Joan (2021)
    Conference report
    Open Access
    To better understand the phenomena associated with electrostatic charges and potential distribution over vertical conductors, this work describes preliminary results obtained with a tethered drone that is used to lay ...
  • Novel flux-weakening strategy considering the saturation effects for electric vehicles 

    Miguel Espinar, Carlos; Heredero Peris, Daniel; Subirats Rillo, Oriol; Escaler Puigoriol, Francesc Xavier; Montesinos Miracle, Daniel (2021)
    Conference report
    Open Access
    This paper proposes an innovative control algorithm for Permanent Magnet Synchronous Machines (PMSMs), based on a Vector Current Control (VCC) strategy in order to operate in the Flux-Weakening (FW) zone and a Finite Element ...

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