摘要
光伏并网发电系统中,为了提高整个并网发电系统的效率,则需要提高太阳能光伏电池的转换效率,保证它的输出功率达到最大。太阳会随着外界环境的不同而发生变化,但它总是在一定的外界温度或日照强度下有一个最大功率点,为了解决传统的最大功率点跟踪MPPT(Maximum Power Point Tracking)方法总是在追踪速度和稳态精度之间选择其一,采用了一种改进的模糊控制算法,通过在Matlab/Simulink里搭建含有升压电路的系统仿真模型,比较改善前和改善后的仿真结果,得到通过改善后,光伏并网发电系统的最大功率点跟踪MPPT更快速、更稳定的结论。
In the photovoltaic grid- connected power generation system, in order to improve the efficiency of the grid- connected power generation system, it is necessary that the PV grid-connected power generation system needs to improve the conversion efficiency of solar photovoltaic cells, which is to ensure that its output power to the maximum. The sun will change with the external environment, but the solar photovoltaic cell array always has a maximum power point in a certain external temperature or sunlight intensity. In order to solve the traditional maximum power point tracking MPPT （Maximum Power Point Tracking） method is always choose between tracking speed and steady-state accuracy. An improved fuzzy control algorithm is adopted, and a system simulation model with booster circuit is buihed in Matlab / Simulink. Comparing the simulation results before and after the improvement, it is concluded that the improved MPPT is faster and more stable in photovoltaic grid-connected power generation system.
出处
《自动化与仪器仪表》
2017年第3期162-164,168,共4页
Automation & Instrumentation
基金
黑龙江省教育厅资助科技项目(12541071)
东北石油大学校内培育基金(XN2014110)
关键词
光伏发电
模糊控制
扰动观测法
仿真
photovoltaic power generation
fuzzy control
perturbation observation
simulation
