Distributed Event-Triggered Current Sharing Control for Islanded DC Microgrids With Quantized State

To eliminate voltage deviation of DC microgrids induced by droop control, distributed secondary control has been widely developed with lots of variants. Compared with most existing approaches, a digital communication network is considered where signals are quantized before transmitting into the channel. Then, a distributed secondary control strategy based on quantized signals is designed, to achieve current sharing and voltage restoration under a limited communication width. In this regard, the communication burden can be greatly reduced by using fewer information bits. For further reducing controller updating, we integrate signal quantization with an event-triggered mechanism. Finally, simulation and experimental results show the effectiveness of the proposed method.