Owing to the randomness of the output power in a distributed generation system

the voltage of the bus in an islanding microgrid will fluctuate to an extent that will cause detrimental effects on the payloads connected to that microgrid. A droop control strategy based on drooping coefficient with adaptively changing steps is proposed to suppress the voltage fluctuation of the microgrid bus bar induced by output power swings of a distributed generation system. Simulations and experiments are conducted to validate the proposed algorithm. Results show that a microgrid connected to a distributed generation system is able to maintain the stability of its voltage of the bus by adopting the algorithm based on droop coefficient with adaptively changing steps.