发展智能电网的目标是建设节能、环保、高效、可靠、稳定的现代化电网,其中与之相配套的一个很重要的核心环节就是发展大规模的电力储能装置。大容量电力储能装置对电网的合理使用起"削峰填谷"作用,并有效提高供电可靠性和电能质量。绿色高效的飞轮储能技术由此越来越受到重视。对飞轮储能技术进行分析,采用永磁无刷直流电机和独立的充放电电流变换器搭建了系统的充放电电路。其中,充电采用转速电流双闭环控制策略,电流内环采用滞环控制方式;放电采用闭环Boost控制方式。采用Matlab/Simulink搭建了飞轮储能系统的充放电模型,实现了系统充放电过程的仿真,据此验证所采用电路拓扑和控制方法的可行性。
This paper analyses the technology of flywheel energy storage system,abd built the charging and discharging circuit with the use of permanent magnet brushless DC motor and an independent charging and discharging current converter.The charging circuit adopted speed and current double closed-loop control strategy,in the inner current loop,used the current hysteresis band control method.The discharging circuit adopted closed-loop Boost topology.Finally,setting up the charging and discharging model of the system and realizing the process simulation of charging and discharging,the simulation results show the circuit topology and control method feasibility.