The deteriorated effects on proportional load distribution are caused by mismatch of the output impedance and the feeder impedance in the conventional droop-control of multi-microgrid inverters (MGIs). The matching condition between output impedance and feeder impedance are revealed in the condition of sharing the load in proportional to their power rating among multi-paralleled inverters. A novel droop controller with adaptive droop coefficients and voltage drop compensations is proposed to share the load accurately in both dynamic and steady state. Additional

the design procedure of the parameters in this proposed controller are provided as well. The simulation and experiment are provided to validate its feasibility and validity. This work is supported by National Natural Science Foundation of China (No. 51407057

No. 51307042) and Anhui Provincial Natural Science Foundation of China (No. 413286).