摘要
扰动观测法是一种比较简单且有效的MPPT控制方法 ,传统的扰动观测法电压扰动次数比较多,输出功率震荡比较大,稳定性差。为此本为提出了一种变步长的扰动观测法,在最大功率点较远处采用较大的步长,在最大功率较近处采用较小步长。仿真结果表明:与传统的相比,在不同的光照下,输出的功率震荡比较小,可以更快速的达到最大功率点,有更好的稳定性。
Perturbation observation method is a relatively simple and effective MPPT control method. The traditional disturbance observation method has many voltage disturbances, and the output power is relatively large and the stability is poor. For this purpose, we propose a variable step perturbation observation method, which uses a larger step size at the maximum power point and a smaller step size at the nearest maximum power. The simulation results show that compared with the traditional, the output power shock is relatively small under different illumiuation, and the maximum power point can be reached more quickly, and the stability is better.
作者
梁宇
School of Electrical and Information Engineering Anhui University of Science and Technology Huainan Anhui 232001 China
出处
《科技视界》
2017年第9期145-145,155,共2页
Science & Technology Vision
关键词
扰动观测法
MPPT
步长
仿真
Disturbance observation method
MPPT
Step size
Simulation
