Grid Synchronization and Voltage Analysis Based on the Kalman Filter

This chapter deals with the problem of grid synchronization in the presence of several perturbations such as harmonics, voltage unbalance, measurement noise, transients and frequency deviation. The development of two synchronization structures is presented, one for single-phase systems and the other for three-phase systems. These schemes are based on the Kalman filter and all the aforementioned perturbations are incorporated, explicitly, in the problem formulation. A voltage analyser is also developed based on the three-phase synchronization structure.

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