A Novel Integrated Control Strategy of Multi-micro Source Microgrid

To solve the problem that voltage and frequency fluctuations during the switching process of grid-connected and island of microgrid with multi-micro source, this paper researches the structure and characteristics of doubly fed induction generator (DFIG), micro gas turbine and battery, then proposes a novel integrated control strategy of multi-micro source microgrid. The proposed method utilizes different control methods are adopted for multi-micro source. Make the micro source have a stable output in grid-connected operation state. Maintaining the micro source has a stable output during switching process of grid-connected and island, and keeping a stable and reliable voltage and frequency in island operation state. Ensure the voltage frequency stability during the switching mode of the microgrid operation mode. This paper simulates the microgrid system by using Matlab/Simulink simulation software. And the simulation results verify that the novel integrated control strategy for multi-micro source microgrid is stable and can smoothly transition when the microgrid operating state is switched.