Research on Droop Control Strategy of Microgrid Based on Current Prediction

For inverter output impedance differences leading uneven distribution of power in microgrid island mode, this paper presented a control strategy based on P-U and Q-f. Based on changes in inverter output current, this paper presented the current predictive control algorithm, and used model predictive method for predicting the current and optimizing control parameters, reducing the voltage and frequency oscillation caused by disturbances. Through the simulation and calculation, this paper verifies the correctness and effectiveness of the proposed current predictive droop controller.