The fl ywheel energy storage and two-way DC/DC are two-way fl ow of energy systems. This paper proposed a fl ywheel energy storage system based on bidirectional DC/DC control strategy, including charging constant current, constant voltage, closed-loop speed compound control strategy and two degrees of freedom PI discharge control strategy. This paper gave the composition structure and control block diagram of the fl ywheel energy storage system. The simulation and experimental results show that the bidirectional DC/DC control strategy of the proposed fl ywheel energy storage system overcomes t...
