摘要
针对传统恒压法在光强和温度大范围变化时不能准确跟踪光伏电池最大功率点的问题,以高精度阻增量光伏动态模型为基础,推导精度更高的最大功率点动态模型,据此提出MPPT恒压控制系统的参考电压值随光强和温度的变化而变化的动态恒压法,并与传统MPPT恒压控制法做对比研究,仿真实验结果表明,高精度动态恒压法较传统恒压法能更精确跟踪最大功率点,输出功率更平稳,提高了光伏电池组件的光电转换效率。
In this paper,for the problem that the traditional constant voltage method can not accurately track the maximum power point of photovoltaic cells with the light intensity and temperature changing in a wide range,then based on the high-accuracy resistance increment solar dynamic model,the high-precision maximum power point dynamic model was derived and the real-time constant voltage method,MPPT（ Maximum Power Point Tracking） system reference voltage changing with the light intensity and temperature,is proposed,and the comparative study with traditional MPPT constant voltage control method was done. Simulation results show that the high-accuracy real-time constant voltage method can more accurately track maximum power poing tnad more stably ouput power than the traditional constant voltage method,and improve the photoelectric conversion efficiency of photovoltaic cells components.
出处
《成都信息工程大学学报》
2016年第3期297-300,共4页
Journal of Chengdu University of Information Technology
基金
四川省科技支撑计划资助项目(2015GZ0204)
四川省教育厅科研基金资助项目(15ZA0187)
关键词
电力电子与电力传动
新能源发电
阻增量
最大功率点
动态模型
恒压法
动态恒压法
power electronics and power drives
new energy power generation
increase resistance
maximum power point
dynamic model
constant voltage method
real-time constant voltage method
