翟盼盼,苟军年,杨剑锋.基于自适应下垂法的有功功率均分控制[J].电测与仪表,2019,56(10):105-110. Zhai Panpan,Gou Junnian,Yang Jianfeng.Active Power Sharing Control Based on Adaptive Droop Method[J].Electrical Measurement & Instrumentation,2019,56(10):105-110.
基于自适应下垂法的有功功率均分控制
Active Power Sharing Control Based on Adaptive Droop Method
In the low-voltage island microgrid, the line impedance is not matched with the capacity of the parallel inverter due to the inconsistent line impedance. The traditional droop control method can not achieve the effect of the parallel inverter active power to achieve equalization; and the traditional droop control method feedback It is difficult for the signal to accurately measure the voltage of the common node after the line impedance. Aiming at the above problems, an adaptive droop control method is proposed. The method has variable droop coefficient and variable no-load voltage, and automatically adjusts the droop coefficient and the no-load voltage to reduce the active power distribution of the parallel inverter. Deviation and reduce the voltage drop across the line impedance. In the case of sudden load disturbance and disturbance, the MATLAB2014a/SIMULINK software platform is used to verify the traditional droop control and adaptive droop control. The simulation results verify that the adaptive droop control method can not only make the parallel inverter active power distribution. Achieving equalization can also greatly improve the voltage drop across the line impedance.
