摘要
光伏电池输出功率随外部环境和负载的变化而变化,要提高光伏发电系统的输出效率须采用有效的最大功率点跟踪算法.针对光伏电池的非线性特性,提出了一个基于增量电导法、以升降压斩波器为核心的光伏能量转换系统.经PSIM和LabVIEW软件仿真证实,该方法能使系统稳定工作在最大功率点,同时能对外界环境的变化做出快速反应.
The output power of photovoltaic(PV)cells is determined by the external environment and the load.In order to enhance efficiency,the maximum power point tracking(MPPT)control must be employed.A PV energy conversion system was discussed,which consisted of a buck-boost converter and an MPPT controller based on Incremental Conductance(IncCond)algorithm.The simulation study under PSIM and LabVIEW showed that this method was able to keep the PV system working at the maximum power point and to respond quickly to environmental changes.
出处
《信阳师范学院学报(自然科学版)》
CAS
2010年第4期595-598,共4页
Journal of Xinyang Normal University(Natural Science Edition)