摘要
在光伏系统中,光照强度、环境温度和负载变化等将会影响光伏系统的功率输出,因此光伏系统最大功率点跟踪(MPPT)是光伏系统研究的一个重要环节。文章在对比当前几种MPPT算法的基础上,通过改进扰动观察法得到了一种改变变换器开关频率占空比(D)来获得光伏系统最大输出功率的方案。利用MATLAB对光伏系统进行了不同工作条件下的仿真,证明其是可行的。同时,在一个实际光伏应用系统中进行占空比微增(ΔD)法最大功率点跟踪的应用试验。
In the photovoltaic power generation system, the power output of PV systems was affected by light intensity, temperature,load change and other factors, so the maximum power point tracking （MPPT） is an important part of PV systems. Comparing the advantages and disadvantages of the current MPTT algorithms, The maximum power output of PV system was obtained by the solution of change switch frequency tube duty factor （D） improved by the perturbation and observation method.. The simulations was made under different conditions,which shows that the method is feasible, meantime, the slightly increased method of the duty cycle（ΔD） is tested in a practical photovohaic application system.
出处
《可再生能源》
CAS
北大核心
2012年第2期9-12,共4页
Renewable Energy Resources
