Solutions of oscillation suppression solutions for DC microgrids with multi-sources

DC micro-grid has a number of distributed energy resources and a large number of constant power loads. They are prone to oscillate, bringing hidden hazards to the stable operation of DC micro-grid. With the example of two-source and two-load cascade system coupling, this paper discusses about one strategy to inhibit DC micro-grid oscillation. The strategy is to introduce the heterogeneity coefficient of line-regulating converter, combined with values of coupling control parameter; The feasibility of both methods is verified by simulation analysis.