Browsing by Author "Peña Alzola, Rafael"

Now showing items 1-4 of 4

    • An approximated analytical model for pole-to-ground faults in symmetrical monopole MMC-HVDC systems 

      Albernaz Lacerda Freitas, Vinícius; Machado Monaro, Renato; Campos Gaona, David; Peña Alzola, Rafael; Coury, Denis V. (Institute of Electrical and Electronics Engineers (IEEE), 2021-12)
      Article
      Open Access
      Developing pole-to-ground (PG) fault models for Modular Multilevel Converters (MMC) is not straight forward due to the fault asymmetry and converter switching concerning blocking characteristics. Various studies have been ...

    • Comparative analysis of fault detection and classification techniques for HVDC grids protection 

      Albernaz Lacerda Freitas, Vinícius; Campos Gaona, David; Peña Alzola, Rafael; Machado Monaro, Renato; Coury, Denis V.; Anaya Lara, Olimpo (The Institution of Engineering and Technology (IET), 2020)
      Conference report
      Restricted access - publisher's policy
      Dealing with high short-circuit currents with a fast rise rate in Voltage Source Converters (VSCs) still poses as a challenge for High Voltage Direct Current (HVDC) multiterminal system (MTDC) reliability. Several fault ...

    • Control-based fault current limiter for modular multilevel voltage-source converters 

      Albernaz Lacerda Freitas, Vinícius; Machado Monaro, Renato; Peña Alzola, Rafael; Campos Gaona, David; Coury, Denis V.; Anaya Lara, Olimpo (Elsevier, 2020-06)
      Article
      Restricted access - publisher's policy
      The sharp rise in short-circuit currents of voltage-source converters is still a challenge for DC grid reliability, which imposes stringent requirements on DC breakers. Therefore, fault current limiters are used for slowing ...

    • Short-circuit analytical model for modular multilevel converters considering DC cable capacitance 

      Albernaz Lacerda Freitas, Vinícius; Peña Alzola, Rafael; Campos Gaona, David; Machado Monaro, Renato; Anaya Lara, Olimpo; Coury, Denis V. (Institute of Electrical and Electronics Engineers (IEEE), 2020)
      Article
      Open Access
      Developing analytical short-circuit models for Modular Multilevel Converters (MMC) is not straightforward due to their switching and blocking characteristics. Short-circuit models for MMCs have been developed previously ...