A fuzzy based improved power sharing methodology for islanded microgrid with hybrid sources

A modified power sharing methodology with improved fuzzy based control for hybrid islanded micro grid system has been addressed in this paper. The voltage and frequency regulation with the proposed technique takes into account of the fluctuation inthe input power which is usually effective when renewable energy input for the Distributed Generation (DG)s are considered. This power fluctuation can lead to voltage fluctuation which can affect the power sharing between the DGs. In this paper a model based technique is employed considering storage unit in the system for adjustment of the active and reactive power sharing under fluctuating input power con-dition. A proper active and reactive power sharing is obtained among the parallel connected DGs. The optimal slopes of the controllrer are dynamically obtained with varying physical conditions e.g. solar insolation, wind speed etc. for effective power sharing. A novel fuzzy logic based controller is proposed for the individual units to enhance power transfer capability. The effectiveness of the proposed method is evaluated through proper simulation and experimental verifications performed on a practical microgrid prototype which showed satis-factory results.

Automated summary

A modified power sharing methodology with improved fuzzy based control is proposed for hybrid islanded micro grid system in this paper. The proposed technique takes into account the fluctuation in the input power and improves voltage and frequency regulation. A model based technique is employed using a storage unit for adjustment of the active and reactive power sharing. The effectiveness of the proposed method is evaluated through simulation and experimental verifications on a practical microgrid prototype.