直流微网与直流微源、储能介质、直流负荷具有内在相容性，可实现直发-直储-直用的一体化，更为智能直流配电的研究提供了新契机。然而，面对微源/负荷的动态投切使得直流微网呈现时变结构特征，容易导致变流器运行失稳；面对多态微源下直流微网的功率协同和运行管理，难以满足即插即用的多样性动态功率调节与多目标能量管理需求。本项目针对上述挑战，提出时变结构下直流微网变流器稳定性建模和分析方法，揭示微源分布式致稳运行机理；研究不同调节目标下的直流微网变流器的多模态行为特征，提出基于微源分布式自适应控制的多态柔性功率分配；在充分挖掘直流微网稳定运行与功率分配的边界条件基础上，探究系统优化目标间的多尺度时间解耦特性，提出基于变流器的分布式主动能量管理控制。最后，建立直流微电网软硬件集成化研究平台，形成集理论、技术和平台一体的系统化成果，为实现直流微网的可靠、稳定工作提供技术支持，为促进新能源并网应用提供研究基础。

DC micro-grid has inherent compatibility with micro-source, energy storage and electricity load, which can realize the integration of direct distribution, direct storage and direct use, and provide a new opportunity for the basic research of intelligent distribution system. However, the dynamic switching on/off of micro-sources or loads makes the dc micro-grid present time-varying structure characteristics, which is easy to lead to the instability of the converter operation. Facing the power coordination and operation management of dc micro-grid under multi-mode operations of micro sources, it is difficult to meet the demand of plug and play dynamic power regulation and multi-objective energy management. Aiming at the above challenges, this project proposes the distributed stability modeling and analysis method of dc micro-grid converter under time-varying structure, and reveals the self-disciplined stable operation mechanism of decentralized micro-sources. The behavior characteristics of the multiple modes of the dc micro-grid converters caused by different regulating objectives are studied, and a multi-mode flexible power coordination strategy based on the adaptive control of micro-sources is proposed. On this basis, the physical characteristics and stability conditions of the dc micro-grid are fully explored, and the multi-scale spatial-temporal decoupling characteristics between the optimization targets are explored, and a distributed energy management congrol is proposed. Finally, a research platform for the integration of hardware and software of the dc micro-grid is established to form a systematic achievement integrating theories, technologies and the platform, providing technical support for the reliable and stable work of the dc micro-grids and providing research basis for promoting the grid-connected application of renewable energy.