A Hierarchical Distributed Architecture for Power Sharing and Average Voltage Regulation in AC/DC Microgrids Hefei University of Technology

Format:

Book

Conference/Event

Author/Creator:

Yu, Peijie, author.

Zhang, Fanghai, author.

Sun, Wei, author.

Yuan, Weibo, author.

Peng, Bo, author.

Conference Name:

Interntional Conference on the New Energy and Intelligent Vehicles (2025-11-02 : Hefei, China)

Language:

English

Subjects (All):

Energy storage systems.

Renewable energy.

Wind power.

Voltage regulators.

Microgrid.

Local Subjects:

Energy storage systems.

Renewable energy.

Wind power.

Voltage regulators.

Microgrid.

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2026

Summary:

With the rapid growth of renewable energy sources such as photovoltaics, energy storage systems, and wind power, hybrid AC/DC microgrids (H-MGs) are gradually emerging as a key technology for achieving efficient interconnection between generation units and load demands. However, issues such as communication delays, unequal power sharing, and the restoration of voltage and frequency in hybrid microgrids have posed serious threats to the stable operation of microgrids. We also need to appropriately adjust the simulation parameters to ensure that the proposed control framework maintains sufficient flexibility under different load conditions and achieves high operating efficiency in simulation. To tackle these challenges, this paper proposes a distributed secondary control strategy grounded in coordinated consensus and combined with droop-based interlinking converters (ICs) to realize power coupling between the AC and DC subgrids. The proposed method enables precise active-power sharing among AC and DC distributed generators, balanced reactive-power sharing between AC subgrid and ICs, and effective restoration of system frequency and voltage. By introducing consensus indices into the IC control schemerelying only on key indicators from both sidesthe power-coupling capability of ICs is enhanced while communication complexity is reduced. All control objectives, including frequency /voltage restoration and proportional power sharing, are achieved at the secondary-control level. Based on the simulation results, the effectiveness of the proposed method is validated in this paper. Compared with existing methods, the proposed strategy not only achieves accurate power sharing and stable frequency /voltage restoration, but also rapidly recovers system stability under load variations, thereby enhancing the overall stability, reliability, and operational flexibility of hybrid AC/DC microgrids

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