Implementação de um DSOGI-PLL em tempo discreto

Abstract

For the correct operation of active energy converters, proper synchronization with the electrical network is essential. Thus, this work addresses the implementation in discrete time of a DSOGI-PLL (Dual Second Order Generalized Integrator - Phase Locked Loop). The concepts on which the method is based are discussed, and later its operation. The discrete model is then obtained using bilinear transformation, or Tustin’s method, and it is simulated. Soon the results of the simulation are presented, where the system is submitted to an electrical network operating under normal conditions, with frequency variation, with voltage imbalance and lastly with voltage sinking.