摘要
由于光伏系统的输出功率随着外界环境和负载的变化而变化,为了提高光伏系统的效率,需要对其进行最大功率点跟踪[1]。模糊控制属于有差控制,在最大功率点附近仍有震荡的存在,为了进一步改进跟踪性能,提出将模糊PID控制代替模糊控制。根据控制对象建立合适的控制规则表、PID控制器,实现参数的在线优化。仿真结果表明,改进方法能快速、准确地跟踪光伏电池的最大功率点,避免在最大功率点的震荡,同时提高转换效率。
The output power of photovoltaic （PV） system varies with the changes of the environment and the load,Maximum power point tracking （MPPT） control is used to improve the efficiency of PV power system.Fuzzy control is static error control.It still has oscillations existing near the maximum power point.In order to further improve the MPPT control quality,a fuzzy PID control is proposed in this paper.According to the control object,this paper set up a reasonable fuzzy rule table and established fuzzy PID controller to realize the online optimization parameters.
出处
《工业控制计算机》
2014年第5期69-71,共3页
Industrial Control Computer
