基于恒定电压优化的光伏系统MPPT控制方法  

MPPT control based on improved constant-voltages method for photovoltaic system

作　　者：张新亮[1] 

机构地区：[1]南通纺织职业技术学院,江苏南通226007

出　　处：《电子设计工程》2013年第10期112-115,共4页Electronic Design Engineering

摘　　要：针对恒定电压法在最大功率跟踪过程中所出现的精度差、受环境影响大等缺点,本文提出了一种基于优化电压的变电压最大功率跟踪算法,并给出实现方案。对于分布式光伏系统该方法能够在日照度、温度、负载变化的情况下有效的实现实际最大功率点的跟踪控制、减少系统能量的损耗。实验使用DSP来实现最大功率跟踪算法,并对温度、日照度、反向饱和电流进行补偿。结果证明该方法在日照度、温度、负载变化的情况下工作可靠、响应速度较迅速,并能够有效的改善输出动态特性。In order to overcome the defect of the conventional constant-voltage method, this paper presents the improved constant-voltage method for MPPT control and the scheme which can be use to realize it is proposed. The method can be to track the real maximum power point for uncertain running conditions and dynamic fluctuation of workload with distributed solar system, and reduce the energy cost availably. It is proved experimentally and through simulation results that the method has good performances. Use a DSP to realize MPPT control. We do experiment to compensate the related parameters. Results are presented to prove the feasibility of the proposed technique.

关 键 词：光伏发电系统 最大功率点跟踪 电压优化 TMS320LF2407A 

分 类 号：TP202[自动化与计算机技术—检测技术与自动化装置]