摘要
针对光伏发电系统在最大功率点跟踪时存在跟踪速度慢和电压振荡的问题,提出一种最大功率点跟踪的改进电导增量算法。该算法先获取光伏电池输出的电流、电压,然后进行滤波和最大功率跟踪。若输出功率与最大功率点之间偏差较大,则进行恒定步长跟踪,以便系统快速获得最大功率;若输出功率与最大功率点之间偏差较小,以二分变步长进行跟踪。该算法在TMS320F28335 DSP处理器件上实现,并成功应用于光伏发电最大功率跟踪系统。实验结果表明,该改进算法能够实现最大功率快速跟踪,减少系统功率损耗,提高系统最大功率跟踪精度。
As to the problem of tracking slow and easy vibration in photovoltaic power generation system, an improved incremental conductance algorithm was proposed. The algorithm acquired the output current and voltage of PV at first, and then filtered and tracked the maximum power point. If the deviation between outputting power and the nominal maximum power point was larger, the algorithm used constant step size increment, and could rapidly reach the maximum power point; if the deviation between the outputting power and the nominal maximum power point was smaller, the algorithm used dichotomy and variable step size increment. The algorithm was achieved in TMS320F28335 DSP platform, and succeeded application in MPPT system. The experimental results prove that this tracking system can rapidly track maximum power point, and can reduce power lose.
出处
《电源技术》
CAS
CSCD
北大核心
2013年第9期1595-1598,共4页
Chinese Journal of Power Sources
基金
陕西省教育厅科研项目(08JZ18)
关键词
光伏发电
电导增量法
最大功率点跟踪
二分变步长
photovoltaic power generation
conductance incremental algorithm
MPPT
dichotomy and variable step size
作者简介
马帅旗（1977-），男．陕西省人，硕士。讲师，主要研究方向为智能控制、新能源开发与应用。
