Dynamic Power Sharing and Autonomous Voltage Regulation in Islanded DC Microgrids

Document Type

Conference Proceeding

Date of Original Version



This paper proposes a coordinated control strategy for islanded microgrids (MGs) including bus voltage compensation and dynamic power sharing. The droop control is used to realize power sharing among the distributed generations (DGs) in the primary control layer. On this basis, a distributed secondary control with voltage regulation control and current correction control is proposed. This control strategy compensates the DC bus voltage drop caused by the traditional droop control, thus restoring the bus voltage to the rated value. Moreover, the droop coefficient is designed to be adjusted constantly, which achieves high precision of power sharing. The simulations under different operation modes are conducted to validate the performance of the proposed method, where the results demonstrate its effectiveness.

Publication Title

2019 IEEE Power and Energy Society Innovative Smart Grid Technologies Conference, ISGT 2019