A Robust Predictive Current Control for Three-Phase Grid-Connected Inverters

CASTELLÓ, J.; ESPÍ, J. M.; GARCIA GIL, R.; GONZÁLEZ, SERGIO ALEJANDRO

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC

Año: 2009 vol. 56 p. 1993 - 2004

0278-0046

This paper presents a new predictive control algorithm for grid-connected current-controlled inverters. The control combines a two-sample deadbeat control law with a Luenberger observer to estimate the future value of the grid currents. The resulting control offers robustness against the computational delay inherent in the digital implementation, and considerably enhances the gain and phase margins of the previous predictive controls while maintains the high speed response typical of the deadbeat controllers.