【摘要】 为了研究孤岛微电网中混合储能系统的协调方法和直流母线电压的稳定方法，设计并搭建了面向孤岛微电网的蓄电池-超级电容混合储能技术实验平台。该平台包括混合储能装置及电力电子变换器、直流电源和直流负载等组件，并采用基于滤波器的电压电流双闭环控制，其中电压外环控制直流母线电压、电流内环调节锂电池和超级电容的充放电电流。结果表明：蓄电池和超级电容协调配合可充分发挥各自充放电特性，合理分配孤岛微电网波动下的功率缺额，有效稳定直流母线电压。该平台有助于分析与理解混合储能调节的暂态过程，为下一步系统算法优化提供支撑。更多还原

【Abstract】 In order to study the coordination methods of hybrid energy storage system and the stability methods of DC bus voltage in isolated island microgrid, an experimental platform of battery — ultracapacitor hybrid energy storage was designed and built. The platform consists of hybrid energy storage device, power electronic converter, DC power supply, and DC load. The system adopts a filter-based voltage and current dual closed-loop control method, where the voltage outer loop controls the DC bus voltage, and the current inner loop regulates the charging and discharging current of lithium batteries and supercapacitors. The results showed that the coordinated cooperation of batteries and ultracapacitor can fully utilize their respective charging and discharging characteristics, reasonably distribute the power deficit under fluctuations in the isolated microgrid, and effectively stabilize the DC bus voltage. The experimental platform is helpful to analyze and understand the transient process of hybrid energy storage regulation and provide support for the optimization of system algorithm in the next step.更多还原