Abstract：In combination with the virtual synchronous generator technology, the rotor angle droop control can be used in the inverter, that is, the virtual rotor angle droop control (VRAD), which can be used in standalone microgrid. However, the implementation of the existing VRAD requires large actual reactance within the inverter to ensure the correlation between active power and angle, but this approach will reduce voltage utilization. In this paper, a virtual reactance is simulated by the control logic to replace the actual reactance, thus avoiding the voltage source inverter voltage utilization being too low. This paper also analyzes the reason why the load variation in the new control mode is proportional to the rated capacity of the inverter in the multi-inverter, and compares the load sharing effect of different droop parameters, and gives the corresponding simulation results.
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2020, Vol. 21 
