A control method of voltage stability for distributed DC microgrid

This paper proposes a fully distributed DC microgrid control strategy which achieves the power balance and voltage stability without the non-central controller. The strategy improves the robustness and flexibility of the system. By combining the equal micro-increment principle and the consistency algorithm, distributed generation systems can achieve DC bus voltage stability under the circumstance of making the total operation cost minimum in DC microgrid. In addition, the utilization rate of renewable energy is improved by reasonable power sharing among distributed power sources. Compared with centralized control scheme, the scheme proposed is more flexible and reliable. Finally, the simulation model of DC microgrid is built and the simulation results are analyzed to verify the effectiveness of the strategy.