| 摘要:针对脉冲负载频繁投切引起的邮轮混合储能系统频率、电压波动问题，提出一种改进的下垂控制策略。针对锂电池和超级电容混合储能系统建立仿真模型，为各储能单元配置独立的双向DC/DC变换器，仿真分析分段式下垂控制策略对功率分配和均流控制的效果。仿真结果表明：在负载突加或突卸工况下，分段式下垂控制策略可根据负载功率和直流母线电压变化自动控制储能系统功率流向，快速有效平抑电网的负载波动。 |
| 关键词: 混合储能系统 双向DC/DC变换器 分段式下垂控制 功率分配 |
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| Segmented Droop Control Technology of Cruise Hybrid Energy Storage System |
| SHEN Yini,LI Wei,ZHOU Xiaojie,ZHUO Jinbao |
| Shanghai Marine Diesel Engine Research Institute， Shanghai 200090， China;National Engineering Laboratory for Marine and Ocean Engineering Power System， Shanghai 200090， China |
| Abstract:In response to the frequency and voltage fluctuation of cruise hybrid energy storage system caused by frequent switching of pulse load，an improved droop control strategy was proposed.Based on hybrid energy storage system in the form of lithium battery and super capacitor，the simulation model of energy storage system was established.Independent bidirectional DC/DC converter was configured for each energy storage unit，and the effect of segmented droop control strategy on power distribution and current sharing control was analyzed by simulation.The simulation results show that the segmented droop control strategy can make the energy storage system automatically control the power flow direction according to the changes of load power and DC bus voltage under the condition of sudden load increase or sudden load discharge，and rapidly and effectively suppress the load fluctuation of power grid. |
| Key words: hybrid energy storage system bidirectional DC/DC converter segmented droop control energy allocation |
