摘要
根据超级电容器储能特点,建立了用于独立光伏发电的超级电容器储能系统模型,设计了超级电容器电压控制环节,提出了一种带有超级电容器电压模糊反馈的双环控制策略,通过对开环系统bode图的分析,论证了控制系统的稳定性和动态性能。仿真结果表明,在光伏发电系统受到光照及负载扰动的情况下,超级电容器储能系统可以有效地稳定光伏系统的输出电压,提高系统供电的可靠性和电能质量,并且抑制了超级电容器端电压大范围波动对该系统的影响,提高了超级电容器的利用率。
According to characteristics of the super-capacitor energy storage,a super-capacitor energy storage system model for the independent photovoltaic power generation system is established in this paper.A double-loop control strategy with a fuzzy control voltage feedback of super-capacitor is designed to stabilize the voltage.The stability and dynamic performance of the control system is demonstrated by analyzing the bode diagram of the off-loop system.The simulation results show that when PV systems are disturbed by fluctuation of light and load,the super-capacitor energy storage system can effectively stabilize the output voltage and improve and reliability and quality of power supply.In addition,impacts on PV systems by a large range of voltage fluctuations of the super-capacitor energy storage system are effectively inhibited,and availability of the super-capacitors is improved.
出处
《电网与清洁能源》
2010年第11期107-111,共5页
Power System and Clean Energy
基金
国家自然科学基金资助项目(50677018)
