engleski

Damping Optimum Design of Single-Phase Inverter Synchronization and Current Control System

A design of current control system and grid synchronization algorithm is presented for a single-phase grid-tied inverter. A dual current controller is presented, wherein a proportional-resonant controller controls the principal component of output current, while a proportional-integral controller is used for inverter direct current component suppression. Grid voltage synchronization is based on a Modified Mixer Phase Detector Phase-Locked Loop algorithm with Second-Order Generalized Integrator for grid voltage orthogonalization and its subsequent normalization. Both current controllers and the synchronization algorithm are designed according to the damping optimum criterion. The effectiveness of the proposed inverter control and synchronization system is verified by means of comprehensive simulations.

Single-phase AC inverter ; proportional-resonant controller ; DC component suppression ; proportional-integral controller ; phase locked loops

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