• Enhanced power calculator for droop control in single-phase systems 

    Azevedo, Gustavo M.S.; Calvancanti, M; Bradaschia, F.; Neves, F.; Rocabert Delgado, Joan; Rodríguez Cortés, Pedro (IEEE, 2011)
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    Droop control is a common method to parallel operation of inverters. This method uses the average values of power components which are usually obtained through low-pass filters. However, in single-phase systems the power ...
  • Performance improvement of the droop control for single-phase inverters 

    Azevedo, Gustavo M.S.; Calvancanti, M; Neves, F.; Rodríguez Cortés, Pedro; Rocabert Delgado, Joan (2011)
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    The droop control uses the local average values of the active and reactive power components for sharing the load power demand among inverters in parallel. In this paper, a method that uses a virtual quadrature reference ...
  • Safe transient operation of microgrids based on master-slave configuration 

    Azevedo, Gustavo M.S.; Bradaschia, F.; Calvancanti, M; Neves, F.; Rodríguez Cortés, Pedro; Rocabert Delgado, Joan (IEEE Press. Institute of Electrical and Electronics Engineers, 2011)
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    Master-Slave configuration is a suitable alternative to droop control method used in microgrids. In this configuration, only one inverter is the master, while the others are slaves. The slave inverters are always current ...
  • Voltage quality improvement of microgrids under islanding mode 

    Azevedo, Gustavo; Rodríguez Cortés, Pedro; Rocabert Delgado, Joan; Calvancanti, M; Neves, F (IEEE Press. Institute of Electrical and Electronics Engineers, 2010)
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    This paper proposes a control strategy to reduce the voltage unbalance in microgrids. The voltage unbalance compensation is achieved by injection of a proper negativesequence current into the microgrid. This task can ...