Research on the control strategy of Bus Voltage of DC-Micro-grids utilizing bidirectional AC/DC converters

Abstract Design a small-family DC-Micro-grids system, analyzes its existence value and meaning. Regarding bus voltage of DC-Micro-grids, it has always been an important index of DC-Micro-grids, this paper puts forward a two-way AC/DC converter voltage current double closed loop control method. It is easier to control the voltage and current by using d-q shaft transformation decoupling. Build the system model with MATLAB/simulink software and simulate in the time domain cases in the Condition of Synchronization. The results prove that the method can very good control dc bus voltage stability, ensure system power safety.