Browsing by Author "Gregory Baltas, Nicholas"

Now showing items 1-13 of 13

    • A growing self-organising maps implementation for coherency identification in a power electronics dominated power system 

      Gregory Baltas, Nicholas; Lai, Ngoc Bao; Marín Arévalo, Leonardo Vidal; Tarraso Martínez, Andrés; Rodríguez Cortés, Pedro (2020)
      Conference lecture
      Restricted access - publisher's policy
      The presence of power electronics in today’s power systems strengthens due to the wider integration of renewable energy and energy storage systems. Subsequently, the dynamical response becomes harder to model and understand. ...

    • 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 ...

    • External inertia emulation controller for grid-following power converter 

      Lai, Ngoc Bao; Tarraso Martínez, Andrés; Gregory Baltas, Nicholas; Marín Arévalo, Leonardo Vidal; Rodríguez Cortés, Pedro (2021)
      Article
      Open Access
      The advent of renewable energy has posed difficulties in the operation of power systems whose net inertia is becoming critically low. To face such challenges, grid-forming power has been one of the potential solutions ...

    • Frequency selective damping of sub-synchronous oscillations for grid-forming power converters 

      Lai, Ngoc Bao; Marín Arévalo, Leonardo Vidal; Tarraso Martínez, Andrés; Gregory Baltas, Nicholas; Rodríguez Cortés, Pedro (Institute of Electrical and Electronics Engineers (IEEE), 2021)
      Conference lecture
      Restricted access - publisher's policy
      With the advent of renewable energy, stability of power system is becoming more and more crucial. Recently, grid-forming converter concept has attracted much attention from the industry and academia as a potential solution ...

    • Grid-forming power converter controller with artificial intelligence to attenuate inter-area modes 

      Gregory Baltas, Nicholas; Lai, Ngoc Bao; Marín Arévalo, Leonardo Vidal; Tarraso Martínez, Andrés; Rodríguez Cortés, Pedro (2020)
      Conference lecture
      Restricted access - publisher's policy
      Renewable energy and battery energy storage systems are affecting the dynamics of power systems mainly due to the interconnection through power electronics with the electric grid. Specifically, the low inertia characterizing ...

    • 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 ...

    • Inertia emulation in power converters with communication delays 

      Lai, Ngoc Bao; Tarraso Martínez, Andrés; Gregory Baltas, Nicholas; Marín Arévalo, Leonardo Vidal; Rodríguez Cortés, Pedro (2020)
      Conference report
      Restricted access - publisher's policy
      Emulating inertia using power converter has been an effective way to provide additional inertia to power electronic dominated power systems. Currently, the control algorithms for emulating inertia have been proposed ...

    • Multi-rotor virtual machine for grid-forming converter to damp sub-synchronous resonances 

      Lai, Ngoc Bao; Gregory Baltas, Nicholas; Rodríguez Cortés, Pedro (Institute of Electrical and Electronics Engineers (IEEE), 2021)
      Article
      Open Access
      Grid-forming power converters (GFMC) have been widely adopted in power systems as an attractive solution against the challenges imposed by the ever-increasing penetration of renewables. Despite its versatility, GFMC is ...

    • Power quality services provided by virtually synchronous FACTS 

      Tarraso Martínez, Andrés; Lai, Ngoc Bao; Gregory Baltas, Nicholas; Rodríguez Cortés, Pedro (2019-08-27)
      Article
      Open Access
      The variable and unpredictable behavior of renewable energies impacts the performance of power systems negatively, threatening their stability and hindering their efficient operation. Flexible ac transmission systems (FACTS) ...

    • Small-signal model and analysis of a grid-forming power converter based on the synchronous power controller 

      Marín Arévalo, Leonardo Vidal; Tarraso Martínez, Andrés; Lai, Ngoc Bao; Gregory Baltas, Nicholas; Rodríguez Cortés, Pedro (2020)
      Conference lecture
      Restricted access - publisher's policy
      A grid-forming power converter based on the synchronous power controller (SPC) is a solution that through the flexible and adaptive emulation of the main functional blocks of a synchronous machine, allows to take advantage ...

    • Virtual admittance PLL structure for grid-forming power converters in microgrids 

      Tarraso Martínez, Andrés; Candela García, José Ignacio; Lai, Ngoc Bao; Gregory Baltas, Nicholas; Rodríguez Cortés, Pedro (2020)
      Conference lecture
      Restricted access - publisher's policy
      Synchronization plays a fundamental role in connecting power electronic converters with the grid. Conventionally, the synchronous reference frame phase-locked loop (SRF-PLL) has been widely used to estimate the grid phase ...

    • Voltage sensorless control for grid-connected power converters based on state feedback and state observer 

      Lai, Ngoc Bao; Gregory Baltas, Nicholas; Marín Arévalo, Leonardo Vidal; Tarraso Martínez, Andrés; Rodríguez Cortés, Pedro (Institute of Electrical and Electronics Engineers (IEEE), 2020)
      Conference report
      Restricted access - publisher's policy
      Grid-connected power converters have been increasingly utilized to inject renewable energy into the grid. To reduce installation cost and the same time to increase system stability, this paper presents control design for ...

    • Voltage sensorless grid-forming power converters 

      Tarraso Martínez, Andrés; Lai, Ngoc Bao; Gregory Baltas, Nicholas; Rodríguez Cortés, Pedro (2020)
      Conference lecture
      Restricted access - publisher's policy
      During the years, synchronization systems in power converter control has been mainly used for estimating the phase angle and the magnitude of the grid voltage, this estimated information is usually used for droop control ...