Active Damping Stabilization Techniques for Cascaded Systems in DC Microgrids: A Comprehensive Review

Microgrids have arisen as an alternate solution to the problem of power generation in distributed energy. Compared ac microgrids, dc microgrids (DC MGs) are superior terms system efficiency, quality, affordability, and ease control. For integration renewable energy into electronic converters required. When electronics tightly regulated, they behave a constant load (CPL) which exhibits negative incremental impedance characteristic. As result, oscillations occur voltage response at DC bus. To suppress MGs, various damping stabilization techniques proposed by researchers. This paper provides comprehensive review on active techniques. improve system’s stability, can be implemented three distinct zones: source-side, side or CPL side, intermediate level. After analyzing each zone, their merits drawbacks been presented. Moreover, modelling, performance cascaded DC-DC systems, effect source subsystem, converter, stability analysis discussed. Finally, concluding remarks future research directions highlighted.