Enviaments recents

  • Dynamic converter control role configuration in grid of grids 

    Arévalo Soler, Josep; Nahalparvari, Mehrdad; Prieto Araujo, Eduardo; Gomis Bellmunt, Oriol; Norrga, Staffan (2023)
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    The control role of power converters conforming an HVDC link is generally static, i.e. changing the control role of the power converters is not considered in the power system operation. In this paper a lab-scaled demonstration ...
  • Limitations on the virtual inertia provision from grid-forming-connected renewable energy sources 

    Girona Badia, Jaume; Albernaz Lacerda Freitas, Vinícius; Prieto-Araujo, E.; Gomis Bellmunt, Oriol (2023)
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    This paper addresses the limitations of virtual inertia provision from grid-forming interconnected renewable energy sources considering AC grid and resources dynamics. The instantaneous power that the grid-forming can ...
  • Analysis of the contribution of a battery bank to voltage regulation in a distribution system 

    Barbalho, Pedro Inácio de Nascimento e; Albernaz Lacerda Freitas, Vinícius; Coury, Denis V. (Institute of Electrical and Electronics Engineers (IEEE), 2018)
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    Due to demand of higher power quality, reliability and efficiency levels, the penetration of distributed energy resources increased through the past years. Thus, several studies on the different types of electrical energy ...
  • Analysis of harmonic distortion influence in a distributed synchronous generator 

    Casimiro, Renan; Albernaz Lacerda Freitas, Vinícius; Pavanello Bataglioli, Rodrigo; Coury, Denis V. (Institute of Electrical and Electronics Engineers (IEEE), 2018)
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    In conventional electrical systems, the generators are located far from the load centers. However, considering the distributed generation, the impact of harmonic distortion in the generators cannot be neglected.Thus, this ...
  • Phasor and EMT models of grid-following and grid-forming converters for short-circuit simulations 

    Albernaz Lacerda Freitas, Vinícius; Prieto Araujo, Eduardo; Cheah Mañé, Marc; Gomis Bellmunt, Oriol (2023)
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    Phasor models have been widely used in short-circuit simulations, in which system operators verify the behaviour of the grid over thousands of different contingencies. However, it is still unclear if phasor models can still ...
  • Control y análisis de la dinámica cero en inversores trifásicos de fuente de corriente mediante un modelo de variables de estado complejas 

    Rahimi, Leila; Dòria Cerezo, Arnau; Griñó Cubero, Robert (2023)
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    Este trabajo analiza la dinámica cero de inversores de fuente de corriente trifásicos alimentados desde una fuente de tensión y conectados a una carga resistiva local o a la red eléctrica. El análisis de la dinámica cero ...
  • The impact of modular multilevel converter control on DC short-circuit currents of HVDC systems 

    Albernaz Lacerda Freitas, Vinícius; Coury, Denis V.; Suzuki, N; Machado Monaro, Renato (Institute of Electrical and Electronics Engineers (IEEE), 2018)
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    In Modular Multilevel Converter (MMC) based DC systems, during the initial stage of a DC fault, the control system operates normally, inserting and bypassing submodules. Consequently, each MMC control technique would provide ...
  • Proportional-resonant controller applied to modular multilevel converter for HVDC systems 

    Albernaz Lacerda Freitas, Vinícius; Coury, Denis V.; Machado Monaro, Renato (Institute of Electrical and Electronics Engineers (IEEE), 2018)
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    Modular multilevel converters (MMC) are usually controlled by proportional-integral (PI) controllers. However, the PI controller has limitations such as the inability to track a sinusoidal reference without incurring ...
  • Analysis and mitigation of harmonic distortion in distribution networks by an active filter 

    Leonardo, Gustavo Henrique; Albernaz Lacerda Freitas, Vinícius; Oleskovicz, Mário (Institute of Electrical and Electronics Engineers (IEEE), 2018)
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    As a result of the presence of non-linear loads, it is possible to verify the increasing of harmonic distortion in electric power systems. When amplified, it can induce the resonance effect. This effect becomes more and ...
  • NVH of PMSM evaluation under different working conditions in the drive system configuration 

    Martrat, Carles; Repecho del Corral, Víctor; D’Onofrio, Paolo; Dòria Cerezo, Arnau; García, José F.; Giampà, Maria (2023)
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    Noise and vibrations produced by electric motors have gained particular importance lately as the market shifts to electrical vehicles (EVs). This work aims to evaluate the NVH (Noise, Vibration and Harshness) behaviour of ...
  • Data-driven techniques to improve the reliability of low voltage electricty networks through dynamical evaluation of non-technical losses 

    Girona Badia, Marc; Mor Martínez, Gerard; Laguna Benet, Gerard; Cipriano Lindez, Jordi; Luna Alloza, Álvaro (Institute of Electrical and Electronics Engineers (IEEE), 2023)
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    The paradigm of electrical networks is changing rapidly due to the large penetration of renewable energy sources and other distributed generation and storage assets. The variability in the generation profile hinders the ...
  • Analysis of the zero dynamics of three-phase current source inverters using a complex-valued approach 

    Rahimi, Leila; Dòria Cerezo, Arnau; Griñó Cubero, Robert (2023)
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    This paper analyzes the zero dynamics of three-phase current source inverters fed from a voltage source and connected to a local resistive load or the electrical power grid. The zero dynamics is the remaining dynamics of ...

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