针对纯电动船中的动力电池组易受瞬态大电流的冲击、使用寿命短等问题,提出以磷酸铁锂电池和超级电容为核心的复合储能系统方案,进行理论分析,并采用DC/DC变换器以更好地发挥超级电容性能。采用带精英策略的非支配排序遗传算法进行多目标优化选型,结合能量管理策略,实现储能系统的优化配置。仿真结果表明,得到的选型方案结合以模糊控制为核心的能量管理策略能够很好地应对波动性负载。
Owning to the power battery pack in the all-electric ship is vulnerable to transient large current and short service life, a scheme of composite energy storage system with lithium iron phosphate battery and super-capacitor as the core was proposed. According to the theoretical analysis result, DC/DC converter was adopted to make good use of the super-capacitor. The second-generation non-dominated sorting genetic algorithm with elite strategy was used for multi-objective optimization to realize the optimal configuration of energy storage system with the help of energy management strategy. The simulation results showed that the proposed scheme combined with the energy management strategy based on fuzzy control can meet the requirement of the variable load well.
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