Volume 59

Toward A Novel Energy Internet Paradigm: Distributed Cooperative Control of Heterogeneous DREs in Hybrid AC/DC Microgrids Xing Huang, Yulin Chen, Donglian Qi, Ying Weng, Yucan Zhang, Guangxin Zhi

Abstract

To facilitate the integration of heterogeneous distributed renewable energy sources (DREs), hybrid AC/DC microgrids (MGs) are constructed by synthesizing the inherent advantages of AC and DC MGs, emerging as promising grid architectures. Among them, the interlinking converter (ILC) serves as the critical interface connecting AC and DC subgrids while enabling bidirectional power exchange. Considering the system deviations caused by droop control and the additional complexity introduced by ILC integration, a distributed cooperative control strategy in hybrid AC/DC MGs is proposed in this paper for coordinating heterogeneous DREs and ILCs within the energy internet paradigm. A comprehensive hierarchical cooperative control framework is established, within which the proposed strategy achieves simultaneous frequency and voltage restoration, proportional power/current sharing and regulated inter-subgrid power exchange. Theoretical stability analysis and detailed simulation studies demonstrate the efficacy of the proposed control strategy.

Keywords Energy internet paradigm, distributed cooperative control, heterogeneous DREs, interlinking converter, hybrid AC/DC microgrids