Now showing items 1-20 of 22

    • Advanced control of a high power converter connected to a weak grid 

      Shahparasti, Mahdi; Catalán, Pedro; Candela García, José Ignacio; Luna Alloza, Álvaro; Rodríguez Cortés, Pedro (2016)
      Conference report
      Open Access
      This paper addresses the stability problems of a high power converter connected to a weak grid. The wide range values that grid impedance can take, challenges the stability and the performance of the controllers, which are ...
    • Analysis on capability of harmonic damping using active filter acting as resistive harmonic impedance 

      Hasan, Khurshid N Md; Luna Alloza, Álvaro; Candela García, José Ignacio; Rodríguez Cortés, Pedro (2013)
      Conference report
      Restricted access - publisher's policy
      This paper presents the analysis of shunt active filter (SAF) in harmonic damping. SAF with voltage-based detection control act as an active damping and able to attenuate harmonic propagation throughout the power distribution ...
    • Application of Posicast control method to generator excitation system 

      Ghorbani, Hamidreza; Candela García, José Ignacio; Luna Alloza, Álvaro; Rodríguez Cortés, Pedro (2014)
      Conference report
      Restricted access - publisher's policy
      Application of Posicast control method to generator excitation system is presented in this paper. Presented control method is one of the simplest control design methods which can be installed in generators excitation to ...
    • Comparison of simplified models for voltage-source-inverter-fed adjustable-speed drive during voltage sags when the during-event continue mode of operation is active 

      Bogarra Rodríguez, Santiago; Monjo Mur, Lluís; Saura Perisé, Jaime; Córcoles López, Felipe; Pedra Durán, Joaquim (2014-11-13)
      Article
      Restricted access - publisher's policy
      Three simplified models for adjustable-speed drives are compared with measurements on an actual drive where the inverter control strategy remains unaltered during the event (also known as continue mode of operation) to ...
    • Control of D-STATCOM during unbalanced grid faults based on DC voltage oscillations and peak current limitations 

      Khoshooei, Arash; Moghani, Javad S.; Candela García, José Ignacio; Rodríguez Cortés, Pedro (2017-12-19)
      Article
      Open Access
      The safe operation of grid connected power converters during abnormal condition is a key issue in order to guarantee its operation and to avoid undesired trips. In this paper different control strategies for the operation ...
    • Coordinated reactive power control for static synchronous compensators under unbalanced voltage sags 

      Castilla Fernández, Miguel; Miret Tomàs, Jaume; Camacho Santiago, Antonio; Matas Alcalá, José; Alarcón Gallo, Eduardo; García de Vicuña Muñoz de la Nava, José Luis (2012)
      Conference report
      Restricted access - publisher's policy
      Unbalanced voltage sags strongly deteriorate the performance of power converters and electrical machines connected to the distribution network. In particular, a reduction of the power quality is noticed in these equipments, ...
    • Derivative based inertia emulation of interconnected systems considering phase-locked loop dynamics 

      Rakhshani, Elyas; Remon, Daniel; Mir Cantarellas, Antonio; Mehrjerdi, H.; Rodríguez Cortés, Pedro (2016)
      Conference report
      Restricted access - publisher's policy
      Recent trend of research is oriented in different methods of emulating the inertia to increase the sustainability of the system. In the case of dynamic performance of power systems especially in frequency control of ...
    • Disseny i implementaci o d'una plataforma experimental per al desenvolupament de simulacions Power Hardware in the Loop 

      Ferer i San José, Ricard (Universitat Politècnica de Catalunya, 2015-04)
      Master thesis (pre-Bologna period)
      Open Access
      En aquest projecte es presenta el disseny, la implementació i la validació d’una plataforma experimental per al desenvolupament de simulacions utilitzant la tècnica PHIL (Power Hardware in the Loop). Una ...
    • Enhanced control for improving the operation of grid-connected power converters under faulty and saturated conditions 

      Shahparasti, Mahdi; Catalán, Pedro; Fazlin Roslan, Nurul; Rocabert Delgado, Joan; Muñoz Aguilar, Raúl Santiago; Luna Alloza, Álvaro (2018-02-28)
      Article
      Open Access
      In renewable energy based systems Grid-Connected Voltage Source Converters (GC-VSC) are used in many applications as grid-feeding converters, which transfer the power coming from the renewable energy sources to the grid. ...
    • Enhanced performance of SVC via using rotor speed deviation signal (RSDS) 

      Ghorbani, Hamidreza; Monadi, Mehdi; Luna Alloza, Álvaro; Candela García, José Ignacio; Rodríguez Cortés, Pedro (2015)
      Conference report
      Open Access
      Transient stability enhancement through using a Static Var Compensator (SVC) and Rotor Speed Deviation Signal (RSDS) of synchronous machine are thoroughly investigated in this paper. Speed deviation signal of generator as ...
    • Equivalent model of a synchronous PV power plant 

      Remón, D.; Mir Cantarellas, Antonio; Atef Abbas Elsaharty, Mohamed; Koch-Ciobotaru, Cosmin; Rodríguez Cortés, Pedro (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Conference report
      Open Access
      The continuous integration of renewable energy sources into power systems has led to the construction of large power plants based on power electronics, with power ratings up to hundreds of megawatts, in order to accomodate ...
    • Flexible HVDC transmission systems small signal modelling: a case study on CIGRE Test MT-HVDC grid 

      Heidary Yazdi, Seyed Saeid; Rouzbehi, Kumars; Candela García, José Ignacio; Milimonfared, Jafar; Rodríguez Cortés, Pedro (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Conference report
      Open Access
      Future Flexible HVDC Transmission Systems will consist of several active and passive infrastructures including DC Power Flow Controller (DC-PFC) device. The addition of the DC-PFC to the future Multi-Terminal HVDC (MT-HVDC) ...
    • On existence and stability of equilibria of dc LTI circuits with constant power loads 

      Barabanov, Nikita; Ortega, Romeo; Griñó Cubero, Robert; Polyak, Boris (2016)
      Conference report
      Open Access
      This paper studies the problem of existence and stability of equilibria of dc linear time–invariant circuits with constant power loads. First, we correct an unfortunate mistake in our previous work [10] pertaining to the ...
    • Phase stability enhancement in big power networks using renewable generation units controlled by SPC 

      Abdollahi, Mostafa; Candela García, José Ignacio; Rocabert Delgado, Joan; Muñoz Aguilar, Raúl Santiago; Hermoso Costa, Juan Ramón (2017)
      Conference report
      Restricted access - publisher's policy
      High penetration of Renewable Generation Units (RGU), has led to that the interaction of this newfound participators in power network with conventional units be more critical challenges for network operators. Effect on the ...
    • Power control strategies during voltage sags according to Spanish grid code 

      Bogarra Rodríguez, Santiago; Córcoles López, Felipe; Saura Perisé, Jaime; Moreno Eguilaz, Juan Manuel; Bakkar, Mostafa (2018)
      Conference report
      Open Access
      In order to connect any power converters into the grid there are some grid requirements to insure the safe operation of the grid. So, the control of the converters especially during abnormal ...
    • Proportional-resonant current controller with orthogonal decoupling on the aß-reference frame 

      Tarrasó, Andres; Candela García, José Ignacio; Rocabert Delgado, Joan; Rodríguez Cortés, Pedro (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Conference report
      Open Access
      The increasing penetration of grid-connected RES systems, advanced control algorithms have been developed to operate under grid faults and fulfill strict requirements of the grid codes. In order to overcome this, the current ...
    • Resonance damping of LCL filters via input admittance frequency shaping 

      Perez Morales, Jorge; Cóbreces Álvarez, Santiago; Pizarro, Daniel; Rodriguez Sanchez, Francisco Javier; Griñó Cubero, Robert (IEEE Press, 2016)
      Conference report
      Open Access
      This paper presents a novel active damping technique of current-controlled grid-connected power converters through LCL filters. Based on H8 synthesis algorithms, a grid current controller is obtained so that the grid-connected ...
    • Small synchronous machine protection during voltage sags caused by MV grid faults 

      Bogarra Rodríguez, Santiago; Rubion, X.; Rolán Blanco, Alejandro; Córcoles López, Felipe; Pedra Durán, Joaquim; Iglesias, J. (2018-03-01)
      Article
      Restricted access - publisher's policy
      This paper analyses the impact of symmetrical and unsymmetrical voltage sags caused by distribution and transmission faults on the dynamic behaviour of small salient-pole synchronous machines connected to the MV grid, and ...
    • Synchronous power control for PV solar inverters with power reserve capability 

      Tarrasó, Andres; Candela García, José Ignacio; Rocabert Delgado, Joan; Rodríguez Cortés, Pedro (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Conference report
      Open Access
      The increasing penetration of renewable energy systems force the grid-connected power converters to use advanced active power controls, which needs to add more functionalities to their control strategies. A power reserve ...
    • Voltage recovery influence on three-phase grid-connected inverters under voltage sags 

      Rolán Blanco, Alejandro; Giménez, Pablo; Yague, Sauro J.; Bogarra Rodríguez, Santiago; Saura Perisé, Jaime; Bakkar, Mostafa (2019-02-12)
      Article
      Open Access
      Faults in power systems cause voltage sags, which, in turn, provoke large current peaks in grid-connected equipment. Then, a complete knowledge of the inverter behaviour is needed to meet fault ride-through capability. The ...