Abstract
Ahstract- The dynamic response of the converters are much faster than the load frequency dynamics. Usually, droop control method is employed to represent converters for active and reactive power sharing in microgrids. The drawback of this method is that voltage and frequency deviates from its nominal value under steady state. A distributed secondary control based on Model predictive control with state space approach is proposed for load frequency control and voltage restoration of islanded AC microgrid. Hence, This secondary controller slowly add increments to the primary level until the frequency and voltage deviation gets eliminated. To demonstrate the effectiveness of the proposed controller is carried out by simulation under mismatched feeder impedance with balanced and unbalanced linear load conditions.
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