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  • Quadrature voltage compensation in the isolated multi-modular converter 

    Verdugo Retamal, Cristian Andrés; Candela García, José Ignacio; Rodríguez Cortés, Pedro (2021-02-01)
    Article
    Open Access
    Series connections of modules in cascaded multilevel converters are prone to power imbalances due to voltage differences on their DC side. When modules are connected to direct current (DC) sources, such as photovoltaic ...
  • Control and validation of a reinforced power conversion system for upcoming bioelectrochemical power to gas stations 

    Shahparasti, Mahdi; Rajaei, Amirhossein; Tarraso, Andres; Vidal León Romay, José David; Luna, Alvaro (2021-06-18)
    Article
    Open Access
    This paper presents a proposal for potential bioelectrochemical power to gas stations. It consists of a two-level voltage source converter interfacing the electrical grid on the AC side and an electromethanogenesis based ...
  • Unified power quality conditioner with energy storage based on active transformer 

    Vidal León Romay, José David; Candela, Jose Ignacio; Rodriguez, Pedro (Institute of Electrical and Electronics Engineers (IEEE), 2020)
    Conference report
    Restricted access - publisher's policy
    This paper presents a Unified Power Quality Controller (UPQC) in an application with a Custom Power Active Transformer (CPAT); a power electronics integrated transformer which provides services to the grid through its shunt ...
  • AI-based damping of electromechanical oscillations by using grid-connected converter 

    Gregory Baltas, Nicholas; Lai, Ngoc Bao; Tarraso Martínez, Andrés; Marín Arévalo, Leonardo Vidal; Blaabjerg, Frede; Rodríguez Cortés, Pedro (2021-03-05)
    Article
    Open Access
    The proliferation of grid-connected converter interfaced energy sources in Smart Grids, enhance sustainability and efficiency as well as minimizing power losses and costs. However, concerns arise regarding the stability ...
  • Voltage sensorless control scheme based on extended-state estimator for a grid-connected inverter 

    Lai, Ngoc Bao; Kim, Kyeong-Hwa; Rodríguez Cortés, Pedro (Institute of Electrical and Electronics Engineers (IEEE), 2020-06)
    Article
    Open Access
    This article presents a robust voltage sensorless control scheme to eliminate the need of line-voltage sensors in an LCL-filtered grid-connected inverter system. The proposed control scheme is based on an extended-state ...
  • Active power limiter for static synchronous generators in renewable applications 

    Abdollahi, Mostafa; Candela García, José Ignacio; Rocabert Delgado, Joan; Atef Abbas Elsaharty, Mohamed (Institute of Electrical and Electronics Engineers (IEEE), 2020-08-28)
    Article
    Open Access
    Virtual Synchronous Generators (VSGs) are an interesting control approach for the connection of renewable energies to the electrical grid through power converters. These power devices have shown their ability to enable ...
  • Electromechanical design of synchronous power controller in grid integration of renewable power converters to support dynamic stability 

    Abdollahi, Mostafa; Candela García, José Ignacio; Tarraso Martínez, Andrés; Atef Abbas Elsaharty, Mohamed; Rakhshani, Elyas (2021-04-10)
    Article
    Open Access
    Nowadays, modern power converters installed in renewable power plants can provide flexible electromechanical characteristics that rely on the developed control technologies such as Synchronous Power Controller (SPC). Since ...
  • Centralized synchronous controller based on load angle regulation for photovoltaic power plants 

    Verdugo Retamal, Cristian Andrés; Tarraso Martínez, Andrés; Candela García, José Ignacio; Rocabert Delgado, Joan; Rodríguez Cortés, Pedro (Institute of Electrical and Electronics Engineers (IEEE), 2021-02)
    Article
    Open Access
    The integration of renewable energies based on photovoltaic power plants (PVPPs) is increasing exponentially fast. In consequence, stability problems associated with the lack of inertia are becoming a serious concern. ...
  • Energy balancing with wide range of operation in the isolated multi-modular converter 

    Verdugo Retamal, Cristian Andrés; Candela García, José Ignacio; Rodríguez Cortés, Pedro (Institute of Electrical and Electronics Engineers (IEEE), 2020-05-04)
    Article
    Open Access
    The series-connection of modules in multilevel converters are prone to energy imbalances in the dc capacitor due to the differences between the power absorbed and consumed. In renewable energy applications where the primary ...
  • Grid-forming power converters tuned through artificial intelligence to damp subsynchronous interactions in electrical grids 

    Gregory Baltas, Nicholas; Lai, Ngoc Bao; Marin, Leonardo; Tarraso Martínez, Andrés; Rodríguez Cortés, Pedro (Institute of Electrical and Electronics Engineers (IEEE), 2020-05-18)
    Article
    Open Access
    The integration of non-synchronous generation units and energy storage through power electronics is introducing new challenges in power system dynamics. Specifically, the rotor angle stability has been identified as one ...
  • Novel analytical method for dynamic design of renewable SSG SPC unit to mitigate low-frequency electromechanical oscillations 

    Abdollahi, Mostafa; Candela García, José Ignacio; Rocabert Delgado, Joan; Atef Abbas Elsaharty, Mohamed; Rodríguez Cortés, Pedro (Institute of Electrical and Electronics Engineers (IEEE), 2019-11-28)
    Article
    Open Access
    Grid operators require grid connected RGUs to provide specific dynamic features. RGUs must support dynamic performance of grid and operate in such a way to ward off new issues in grid. Recently, unfavorable oscillatory ...
  • Influence of the ICFF decoupling technique on the stability of the current control loop of a grid-tied VSC 

    Marín Arévalo, Leonardo Vidal; Tarraso Martínez, Andrés; Candela García, José Ignacio; Rye, Rebecca; Rodríguez Cortés, Pedro (Institute of Electrical and Electronics Engineers (IEEE), 2019)
    Conference report
    Open Access
    The control scheme of grid-tied converters is often implemented in the dq-frame due to simplicity of design. However, with this transformation, there exists an inherent cross-coupling term between the d-and q-channels which ...

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