A Novel Complex Power Sharing Based on Sliding Mode Control for Islanded AC Microgrids

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原文链接

NETL
NSTL
IEEE

外文摘要：This article introduces a novel complex sliding-mode control strategy for grid-forming inverters in islanded microgrids. This approach offers an alternative to the traditional hierarchical control strategies that typically rely on droop control, communication-based secondary controls, and virtual impedance methods. To develop the complex sliding-mode control, we propose a complex phasor model for grid-forming inverters, presenting an alternative to the conventional power flow model used in ac microgrids. This model enables the derivation of a linear complex dynamic model for grid-forming inverters connected to a microgrid, based on the apparent power differential equation, thereby simplifying the control law design process. The proposed control system features three key advantages: first, it ensures precise active and reactive power sharing across both resistive and inductive power lines, eliminating the need for virtual impedance; second, it exhibits high robustness against line impedance mismatches and external disturbances, including load changes and the connection and disconnection of inverters; and third, it eliminates the requirement for secondary frequency control. Experimental results validate the effectiveness of the proposed control strategy.

外文关键词：

Reactive powerUncertaintyMicrogridsMathematical modelsRobustnessImpedanceVoltage controlSliding mode controlFrequency controlGrid forming

作者：

Carlos Alfaro、Ramon Guzman、Antonio Camacho、Ángel Borrell、Luis Garcia de Vicuña

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作者单位：

Dynapower Company, LLC, South Burlington, VT, USA

Department of Automatic Control, Technical University of Catalonia, Vilanova i la Geltru, Spain

Department of Electrical Engineering, Escola Universitària Salesiana de Sarrià, Barcelona, Spain

Department of Electronic and Electrical Engineering, Technical University of Catalonia, Vilanova i la Geltru, Spain

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出版年：

2025

DOI：

10.1109/TIE.2024.3488330

IEEE transactions on industrial electronics: Institute of Electrical and Electronics Engineers transactions on industrial electronics

ISSN：

年,卷(期)：2025.72(6)

参考文献量45