Hybrid Control Technique for Load Sharing and Seamless Transition in Microgrid Mode of Operation

This paper proposed a hybrid control technique for AC microgrid in order to achieve adequate load sharing and seamless transition of microgrid between grid connected mode and islanded mode. The hybrid control technique is a combination of proposed modified droop control technique and modified power control technique. The modified droop control technique is developed to improve the dynamic response during the re-synchronization of microgrid to the main grid. In addition, a centralised controller is developed in order to participate all available DGs in the microgrid for re-synchronization to the mian grid by utilizing communication system, therefore the power stress on single DG is avoided. The performance of proposed hybrid control technique in the microgrid for seamless transition between mode of operations is verified by using real time simulator.