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中文摘要：
将直流微电网中储能接口变换器双向DC/DC的输出阻抗作为研究对象,建立了连续导电模式（CCM）下双向DC/DC变换器的小信号模型,推导了双向DC/DC变换器电压下垂控制工作方式下的闭环输出阻抗,并分析了下垂系数对闭环输出阻抗的影响。最后依据阻抗比判据,研究了线路中不同的负载侧阻抗对储能单元稳定性的影响,总结出规律性结论。仿真和实验结果验证了上述理论分析的正确性。
英文摘要：
Output impedance of the energy storage interfaced converter （bidirectional DC/DC） in DC microgrid is researched.Based on the small signal model of bidirectional DC/DC converter worked on continuous conduction mode （CCM） ,the closed-loop output impedance is derived when the bidirectional DC/DC converter operated in voltage droop control mode, and analyzes the impact of droop coefficient of the closed-loop output impedance.Finally according to the impedance ratio criterion, the influence of different load side impedance on the stability of the energy storage unit is studied.The simulation and experimental results verify the correctness of the theoretical analysis
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