The output power of the photovoltaic island microgrid is intermittent and random. To ensure the reliability and stability of power supply, the idea that combines the high energy density battery with supercapacitor which has high power density to form hybrid energy storage system applied to photovoltaic (PV) microgrid becomes a research hotspot.On the basis of existing research, this paper proposes a multi-hysteresis control strategy based on energy management.The energy storage system working state can be optimized and the working life of the battery can be greatly improved by this control strategy. Using MATLAB/Simulink software, a simulation module for PV Island microgrid based on hybrid energy storage is constructed, and the control strategy of PV microgrid is verified and analyzed. Simulation results show that the proposed hybrid energy storage system can balance the instantaneous power rapidly, optimize the microgrid operation, and ensure the reliability of power supply.%孤网运行的光伏微网输出功率具有间歇性和随机性。为了保证系统供电的可靠性及稳定性，将能量密度大的蓄电池和功率密度高的超级电容器构成混合储能系统应用于光伏微网的思路成为研究热点。在现有蓄电池电流多滞环控制策略的基础上进行改进，提出基于功率的储能单元控制策略。该方法优化了储能系统的工作状态，有利于提高蓄电池的工作寿命。通过 Matlab/Simulink 仿真软件搭建了基于混合储能的光伏微网孤网运行仿真模型，并对该光伏微网的控制策略进行验证和分析。结果表明，混合储能系统能迅速平衡系统的瞬时功率，优化系统运行状态，保证供电的可靠性。
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