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Now showing items 1-20 of 111

    • A comparison of power conversion systems for modular battery-based energy storage systems 

      Díaz González, Francisco; Heredero Peris, Daniel; Pagès Giménez, Marc; Prieto Araujo, Eduardo; Sumper, Andreas (Institute of Electrical and Electronics Engineers (IEEE), 2020-02-07)
      Article
      Open Access
      A modular battery-based energy storage system is composed by several battery packs distributed among different modules or parts of a power conversion system (PCS). The design of such PCS can be diverse attending to different ...

    • A novel methodology for effective short-circuit calculation in offshore wind power plants considering converter limitations 

      Song, Jie; Cheah Mañé, Marc; Prieto Araujo, Eduardo; Gomis Bellmunt, Oriol (2022-10-01)
      Article
      Restricted access - publisher's policy
      This paper deals with the short-circuit calculation of offshore wind power plants (OWPPs). The short-circuit calculation presented in this paper assumes the studied system achieves a new equilibrium state during the fault. ...

    • AC fault ride through in MMC-based HVDC systems 

      Dadjo Tavakoli, Saman; Prieto Araujo, Eduardo; Gomis Bellmunt, Oriol (Institute of Electrical and Electronics Engineers (IEEE), 2021-01-01)
      Article
      Open Access
      VSC-HVDC systems are being increasingly employed in the power systems. The recently installed HVDC systems have a power capacity similar to traditional power plants. Hence, they are expected to have a similar behaviour as ...

    • AC/DC systems interconnected by power converters: Modelling and practical aspects 

      Arévalo Soler, Josep; Sánchez Sánchez, Enric; Gomis Bellmunt, Oriol; Prieto Araujo, Eduardo (2021)
      Conference report
      Open Access
      The paper addresses the modelling of AC/DC systems interconnected by power converters. A non-linear model including three AC subsystems and two multiterminal DC systems interconnected by power converters are modelled in ...

    • Admittance study of grid-connected VSCs for harmonic oscillatory instabilities 

      Sainz Sapera, Luis; Monjo, Luis; Cheah Mañé, Marc; Liang, Jun; Gomis Bellmunt, Oriol; Prieto Araujo, Eduardo (2019-09-17)
      Article
      Open Access
      Voltage source converters (VSCs) can reduce damping of grid-connected VSC systems at harmonic resonances, leading to system instability. The conductance of the VSC admittance can be shaped selecting appropriate VSC parameter ...

    • 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 ...

    • Analysis of equilibrium points and optimal grid support of grid-forming modular multilevel converter for balanced and unbalanced faults 

      Westerman Spier, Daniel; Collados Rodríguez, Carlos; Prieto Araujo, Eduardo; Gomis Bellmunt, Oriol (Elsevier, 2023-11-01)
      Article
      Open Access
      This short-communication presents a steady-state analysis of a grid-forming Modular Multilevel Converter (MMC) providing optimal voltage support to the AC network under normal and constrained conditions. The analysis is ...

    • Analysis of MMC energy-based control structures for VSC-HVDC links 

      Sánchez Sánchez, Enric; Prieto Araujo, Eduardo; Junyent Ferré, Adrià; Gomis Bellmunt, Oriol (Institute of Electrical and Electronics Engineers (IEEE), 2018-02-06)
      Article
      Open Access

    • Anàlisi dinàmica de xarxes multiterminal HVDC-VSC per al transport d'energia elèctrica en corrent continu en parcs eòlics marins 

      Prieto Araujo, Eduardo (Universitat Politècnica de Catalunya, 2011-02)
      Master thesis (pre-Bologna period)
      Open Access
      El projecte presenta un mètode d'anàlisi dinàmica per al disseny del control droop emprat en les xarxes multiterminal d'alta tensió en corrent continu HVDC (High Voltage Direct Current) que interconnecten parcs eòlics ...

    • Centralised and distributed optimization for aggregated flexibility services provision 

      Olivella Rosell, Pol; Lloret Gallego, Pau; Prieto Araujo, Eduardo; Ferrer San José, Ricard; Barja Martínez, Sara; Ottesen, Stig Odegaard; Villafafila Robles, Roberto; Sumper, Andreas (Institute of Electrical and Electronics Engineers (IEEE), 2020-07-01)
      Article
      Open Access
      The recent deployment of distributed battery units in prosumer premises offer new opportunities for providing aggregated flexibility services to both distribution system operators and balance responsible parties. The ...

    • Control design and fault handling performance of MMC for MMC-based DC distribution system 

      Muhammad, Fazal; Rasheed, Haroon; Westerman Spier, Daniel; Prieto Araujo, Eduardo; Gomis Bellmunt, Oriol (Institute of Electrical and Electronics Engineers (IEEE), 2022-11-24)
      Article
      Open Access
      Modular multilevel converters (MMCs) have emerged as a viable choice in future DC grid architectures due to their scalability to meet voltage level requirements. However, MMC-based DC distribution systems are at risk of ...

    • Control design of dynamic virtual power plants: An adaptived divide-and-conquer approach 

      Häberle, Verena; Prieto Araujo, Eduardo; Dörfler, Florian (2022-09)
      Article
      Open Access
      In this paper, we present a novel control approach for dynamic virtual power plants (DVPPs). In particular, we consider a group of heterogeneous distributed energy resources (DERs) which collectively provide desired dynamic ...

    • Control design of Modular Multilevel Converters in normal and AC fault conditions for HVDC grids 

      Prieto Araujo, Eduardo; Junyent Ferré, Adrià; Collados Rodríguez, Carlos; Clariana Colet, Gerard; Gomis Bellmunt, Oriol (2017-11)
      Article
      Open Access
      This paper describes a control design strategy of Modular Multilevel Converters (MMC) for High Voltage Direct Current (HVDC) applications to operate during normal and AC fault conditions. First, a steady state analysis of ...

    • Control of modular multilevel converters under singular unbalanced voltage conditions with equal positive and negative sequence components 

      Prieto Araujo, Eduardo; Junyent Ferré, Adrià; Clariana Colet, Gerard; Gomis Bellmunt, Oriol (2017-05-01)
      Article
      Restricted access - publisher's policy
      This paper focuses on the control of Modular Multilevel Converters (MMC) for High Voltage DC (HVDC) applications during unbalanced AC grid voltage sags where positive and negative sequence voltages are equal. The control ...

    • Coordinated control design of the voltage and current loop of a current flow controller for meshed HVDC grids 

      Sau Bassols, Joan; Ferrer San José, Ricard; Prieto Araujo, Eduardo; Gomis Bellmunt, Oriol (2017)
      Conference report
      Restricted access - publisher's policy
      This paper is focused in the control design of a DC/DC Current Flow Controller (CFC) for meshed HVDC grids. It proposes a control design methodology based on an outer current loop to ...

    • Dc voltage droop control design for mmc-based multiterminal hvdc grids 

      Dadjo Tavakoli, Saman; Sánchez Sánchez, Enric; Prieto Araujo, Eduardo; Gomis Bellmunt, Oriol (Institute of Electrical and Electronics Engineers (IEEE), 2020-01-20)
      Article
      Open Access
      This article addresses the design of the DC voltage droop control in modular multilevel converter (MMC)-based multiterminal HVDC grids. First, two energy-based control approaches, namely classic and cross control, are ...

    • DC voltage droop control design for multiterminal HVDC systems considering AC and DC grid dynamics 

      Prieto Araujo, Eduardo; Egea Àlvarez, Agustí; Fekriasl, Sajjad; Gomis Bellmunt, Oriol (2016-04-01)
      Article
      Open Access
      This paper focuses on the droop-based dc voltage control design for multiterminal VSC-HVDC grid systems, considering the ac and the dc system dynamics. The droop control design relies on detailed linearized models of the ...

    • Decentralized control of a nine-phase permanent magnet generator for offshore wind turbines 

      Prieto Araujo, Eduardo; Junyent Ferré, Adrià; Lavemia Ferrer, David; Gomis Bellmunt, Oriol (2015-09-01)
      Article
      Open Access
      This paper presents a decentralized current control approach for a nine-phase wind turbine generator. This type of generator has three different three-phase stators sharing the same machine yoke and connected to the grid ...

    • Definition of scenarios for modern power systems with a high renewable energy share 

      Collados Rodríguez, Carlos; Antolí Gil, Eduard; Sánchez Sánchez, Enric; Girona Badia, Jaume; Albernaz Lacerda Freitas, Vinícius; Cheah Mañé, Marc; Prieto Araujo, Eduardo; Gomis Bellmunt, Oriol (2023-02-28)
      Article
      Open Access
      Recent environmental policies have led academic, industrial, and governmental stakeholders to plan scenarios with a high share of renewable energy sources (RES), to ensure that future energy systems, composed mostly of ...

    • Design and implementation of an LCL DC/DC converter prototype for DC grids 

      Ferrer San José, Ricard; Prieto Araujo, Eduardo; Gomis Bellmunt, Oriol; Colas, Frederic; Marin, Daniel; Guillaud, Xavier; Hajian, Masood; Nguefeu, Samuel (2017)
      Conference report
      Restricted access - publisher's policy
      This paper is focused on the design and implementation of an LCL DC/DC converter prototype. This inductor-capacitor-inductor (LCL) topology offers some promising properties as fault tolerant capability for DC grids, being ...