摘要
通过仿真模拟分析光伏电池特性,针对传统的变步长电导增量(INC)法存在无法同时满足跟踪速率和减少振荡的问题,提出了一种基于改变步长比例因子的变步长最大功率算法,实时判断工作点的状态来选择不同的步长比例因子,从而解决MPPT控制过程中动态响应和稳态波动的这一矛盾关系。仿真结果表明:改进的算法和传统的变步长INC相比,跟踪过程更快速,跟踪结果更精确,系统输出功率在最大功率点处的振荡得以有效降低,动态性能和稳态性能都更优异。
Through the analysis of the characteristics of photovoltaic cell, because the traditional variable step size conductance increment method is unable to satisfy both tracking speed and reducing volatility, a variable step size MPPT method based on variable scaling factor was proposed; a different step length scaling factor was chosen by judging the state of the working point in real time, fixing the contradiction between the dynamic response and the steady-state fluctuation. The simulation results show that the improved variable step incremental conductance method make tracking process more efficient and tracking result more accurate oscillation of the maximum power point （MPP）. The improved method shows steady-state performance. This method also reduces the good dynamic response and
出处
《电源技术》
CAS
CSCD
北大核心
2017年第5期777-779,793,共4页
Chinese Journal of Power Sources
基金
吉林省科技发展计划项目(20130206083SF)
关键词
光伏阵列
最大功率点跟踪
变步长
电导增量法
photovoltaic array
maximum power point tracking
variable step size
incremental conductance method
