Improvement of transient response to islanding control of microgrid with bidirectional inverter

The objective of this paper is to propose an improvement of transient response for islanding control of microgrid. The proposed bidirectional inverter is able to offer active and reactive power from battery during the microgrid voltage sag. After the microgrid voltage returns to its normal condition, the inverter can quickly provide the reactive power to microgrid system. Also, the reactive power provided by bidirectional inverter not only can increase the volatge of microgrid but also improve power quality. Finally, experimental results are presented to validate the proposed method. Comparisons of the proposed method are also presented.