摘要
根据光伏电池的物理数学模型和Boost变换器稳态工作原理对光伏占空比扰动控制机理进行了理论推导和分析。采用PSIM仿真平台对基于占空比扰动控制爬山法的光伏发电系统进行了仿真,仿真实验结果验证了理论分析。文章指出了光伏启动时占空比的合理初始值对于提高启动速度和系统光电转换效率的重要性,为改进MPPT控制策略提供了思路,对光伏系统的工程设计具有指导意义。
According to mathematical physics model of PV cell and the principle of boost converter, the PV control mechanism based on duty-cycle-perturbation is analyzed, and a PV power system based on duty-cycle-perturbation hill climbing method is simulated with PSIM. The simulation results show validity of the theoretical analysis. On this basis, the importance of a suitable initial duty cycle value to increasing of start-up speed and photoelectric conversion efficiency is pointed out. The proposed method provides us with an idea for improvement of MPFF control strategy, which is of practical significance for engineering design of PV system.
出处
《可再生能源》
CAS
北大核心
2013年第10期5-9,共5页
Renewable Energy Resources
基金
河南省科技攻关重点项目(112102310536)
关键词
最大功率点跟踪
占空比扰动
扰动观察法
PSIM仿真
maximum power point tracking（MPPT）
duty cycle perturbation（DCP）
perturbation andobservation algorithm（P＆O）
PSIM simulation
