Research On Droop Control Strategy Of DC Microgrid

With the development and utilization of new energy,microgrid as an important part of future energy,will have more and more applications in our daily life.The development of micro grid is the first to study its control strategy.The control strategy of the DC micro grid is the key to the development and utilization of the micro grid,and the research of DC micro grid technology is of practical value.The main work of this article is as follows:(1)The topology of the DC/DC converter is introduced,the control mode of the DC/DC converter is analyzed,the mathematical model in the dq coordinate system is set up,and the simulation verification is carried out;(2)The P/Q control strategy,V/f control strategy,droop control strategy,DC microgrid bus voltage ?-? droop control strategy and current sharing control strategy are introduced,and their advantages and disadvantages are analyzed;(3)The application of droop control in DC micro grid is analyzed,and the droop control strategy with power loop is studied.The strategy can divide the output power of the converter and study the current control strategy.This strategy can suppress the circulation;(4)A simulation experimental model and hardware experimental platform for DC microgrid are built.Simulation and experimental results prove the effectiveness of the proposed control strategy.