Abstract

Aiming at the influence that the difference of line impedance of multi-inverter parallel system to accuracy of uniform power distribution in system, this paper proposes a control method based on adaptive virtual impedance and variable droop coefficient. Based on the research of adaptive virtual impedance link, variable droop coefficients control method and voltage compensation, the controller model is established. The control system with adaptive virtual impedance and variable droop coefficient is simulated by Simulink in MATLAB. The simulation results verify the effectiveness of the proposed method.

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