Adaptive Gain-Regulating-based Control of Parallel-Connected Γ-Z-Source Power Converters in Hybrid Microgrids

Abstract

This work introduces and describes the use of the parallel-connected Γ-Z-source power converters (ΓZSPCs) as a new interconnection method for the hybrid microgrids (HMGs) to enhance the reliability and the amount of power exchange between the AC and DC sub-grids. Then an adaptive gain-regulating-based (AGR) control strategy is proposed for the ΓZSPCs. To this end, the instantaneous average current sharing (IACS) strategy is adopted wherein the current controllers use the AGR. The simulation of the proposed interlink topology and the control scheme resulted in the improvement of the power exchange within the HMG and the reduced energy loss.