为解决混合动力舰船微电网离网与并网切换过程中产生的电流冲击和电压波动等问题，基于混合动力舰船微电网运行模式切换的特点，提出以逆变器控制策略设计为关键的虚拟开关切换技术。在构建逆变器数学模型以及分析下垂控制参数的基础上，通过在传统下垂控制中引入自饱和比例积分（proportional-integral, PI）控制器建立了模式切换的虚拟开关，利用控制器饱和与非饱和状态的切换即可实现微电网运行模式的切换，确保了控制结构的稳定和一致，实现了离网与并网运行模式之间的无缝切换。在MATLAB/Simulink中搭建混合动力舰船仿真模型，验证虚拟开关切换技术的有效性和可行性。结果表明：采用虚拟开关切换，在保证离网与并网稳定运行的同时，降低了切换频率波动偏差，加快了切换响应速度，较大程度提升了切换性能指标。

In order to solve the problems of current surge and voltage fluctuation during the switching process of independence and parallelization in hybrid ship microgrid, based on the characteristics of switching mode of hybrid ship microgrid, a virtual switch switching technology with inverter control strategy as a key was proposed. On the basis of establishing the mathematical model of the inverter and analyzing the parameters of the droop control strategy, a virtual switch for mode switching was established by introducing a saturated proportional-integral controller into traditional droop control. By switching between saturated and unsaturated states, the operation mode of microgrid could be switched, ensuring the stability and consistency of the control structure, which can achieve seamless switching between independent mode and parallel mode. The hybrid power ship simulation model was build in MATLAB/Simulink to verify the effectiveness and feasibility of virtual switch switching technology. The results show that using a virtual switch switching can reduce the fluctuation difference of switching frequency, accelerate switching response speed, and greatly improve switching performance indicators while ensuring stable operation of independence and parallelization.