Abstract This paper proposes an AC micro-grid structure, which was based on diesel engine, synchronous generator and hybrid energy storage (HES) subsystem, consisting of battery and ultra-capacitor. In system operation, the diesel generator works as the sole voltage source of the micro-grid under islanding mode and the HES cooperate to achieve the power balance of the system. The corresponding energy management strategy was proposed, where the net power of the micro-grid is separated into high and low frequency components. The high frequency part is suppressed by the ultra-capacitor unit, whereas the low frequency part is compensated by the diesel generator and the battery unit together. Through the designed energy management strategy, power balanced of the micro-grid system can be achieved. MATLAB/SIMULINK simulation results under different conditions have verified this proposed micro-grid structure and the proposed energy management strategy.

中文翻译：

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基于孤立交流微网的柴油发电机混合储能系统控制策略

摘要 本文提出了一种基于柴油机、同步发电机和混合储能（HES）子系统，由电池和超级电容器组成的交流微电网结构。系统运行时，柴油发电机作为孤岛模式下微电网的唯一电压源，与HES配合实现系统的功率平衡。提出了相应的能源管理策略，将微电网的净功率分为高频和低频分量。高频部分由超级电容单元抑制，而低频部分由柴油发电机和电池单元共同补偿。通过设计的能量管理策略，可以实现微电网系统的功率平衡。