Active power sharing droop control strategy for low-voltage microgrid based on adaptive virtual resistanc
Due to the unmatched line impedance among distributed generators in the low-voltage micro-grid,reasonable distributing active power according to droop gain is difficult by using the traditional droop control.Therefore,an adaptive virtual resistance-based droop control method without communication was proposed.By transmitting the active power and voltage output by each DG unit in the micro-grid to the a-daptive virtual resistance controller,the power can be accurately distributed according to the inverter ca-pacity ratio on the premise of ensuring the stable control of voltage and frequency.Small signal stability of the microgrid inverter was analyzed to optimize the control parameters of the controller.Simulation and experimental results verify effectiveness of the proposed control method.
microgriddistributed power generationdroop controladaptive virtual resistanceactive power sharingcirculating current suppressionsmall-signal model