提出一种基于飞轮储能的新型动态电压恢复器（DVR），其可对深度电压暂降进行补偿；大功率、高储能量的飞轮储能单元成本高昂，为提高飞轮的总储能量，采用飞轮储能阵列，各台飞轮储能单元并联连接于同一直流母线。详细分析该系统的工作原理和各部分的控制策略；对飞轮储能阵列运行于放电状态的控制策略进行了研究，提出了一种新型的放电控制策略。最后利用Matlab/Simulink对系统进行仿真，验证了所提拓扑结构及控制策略的可行性。 Abstract:  A novel dynamic voltage restorer （DVR） based on flywheel energy storage system is proposed which compensates the deep voltage sag. High power high energy flywheel costs expensive. In order to increase the amount of stored energy， flywheel energy storage array （FESA） is employed which composes multi-flywheel in parallel configuration. The topology of the system is introduced and the control strategies for the system are analyzed. An optimized discharging control strategy for the parallel operation of flywheel energy storage unit （FESU） is proposed. The system is simulated by Matlab/Simulink. The simulation results are presented to verify the effectiveness of the control strategies.