Abstract

DC(Direct Current) droop control has the advantages of plug-and-play and the convenience of parallel operation of multiple converters. However, when the power changes drastically, the DC voltage may be too low. This paper proposes a converter control method based on schedulable variable droop coefficient to maintain voltage stability when the power changes drastically. The dual-machine parallel system is simulated on MATLAB/Simulink, and compared with the traditional DC droop control, the effectiveness of the proposed method is verified.

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