为实现船载直流微电网储能系统负荷电流合理分配及母线电压无差调节，提出一种基于储能荷电状态收敛的自主均流策略. 该策略在传统下垂控制的基础上增设一个补偿外环，通过在环内构建荷电状态收敛函数来自适应调节负荷电流及参考电压，使负荷电流随着荷电状态的动态均衡而实现合理分配，并维持较高的母线电压水平.给出了荷电状态收敛证明，并分析了相关参数的选取规则;此外，为减轻储能系统通信压力，构筑了稀疏通信网络架构，利用动态平均一致性算法估算全局荷电状态平均值并使其稳定收敛; 最后，搭建了StarSim硬件在环实验平台.结果表明，该策略在多种复杂工况下均能实现荷电状态均衡、负荷均流及直流母线电压稳定的控制目标.

In order to achieve reasonable load current distribution and nondifference regulation of bus voltage in shipborne DC microgrid energy storage system, an autonomous current sharing strategy based on the convergence of charge (SoC) of energy storage state was proposed. This strategy added a compensation outer loop on the basis of conventional droop control to adaptively adjust the load current and reference voltage by constructing a SoC convergence function in the loop, so that the load current was distributed reasonably with the dynamic equalization of the SoC and maintained a higher bus voltage level. The proof of SoC convergence was given in this paper, and the selection rules of related parameters were analyzed. Additionally, a sparse communication network architecture was built to reduce the communication pressure of the energy storage system, and the dynamic average consensus algorithm was used to estimate the global average SoC and made it converge stably. Finally, a StarSim hardware in the loop experimental platform was built, and the results show that the proposed strategy can achieve the control objectives of state of charge balance, load current sharing and DC bus voltage stability.