太阳能光伏发电最大功率点跟踪控制器设计  

Design of maximum power point tracking controller with photovoltaic power generation

作　　者：高春甫[1] 陆爽[1] 贺新升[1] 王彬[2] 谢楚雄[1] 

机构地区：[1]浙江师范大学工学院,浙江金华321004 [2]南车戚墅堰机车车辆工艺研究所有限公司,江苏常州213011

出　　处：《中国测试》2014年第2期70-73,共4页China Measurement & Test

摘　　要：为提高光伏发电系统的效率,设计一种太阳能光伏发电最大功率点跟踪控制器。该控制器采用升降压式DCDC变换电路,利用变步长占空比扰动法实现最大功率点跟踪。设计以超级电容和蓄电池混合储能的充电方式,该方法在太阳光强较弱时用小电流继续对蓄电池充电,实现对蓄电池实时充电。对太阳能充电进行相关实验,结果表明:设计的最大功率点跟踪控制器可以在任何光照条件下完成充电,超级电容与蓄电池混合充电比蓄电池单独充电时的充电电流增加了29.1%,提高光伏发电系统的效率。In order to improve the efficiency of the PV system, a maximum power point tracking controller of photovohaie power generation was designed in this paper. The controller uses buck- boost DC-DC conversion circuit and variable step of duty ratio perturbation method to implement the maximum power point tracking. The charging method of super capacitor and storage battery was designed. The method can use the small current to charge the battery when the sunlight weaker and realize the battery charging real-time. The solar charging experiment is carried on in this paper. The experimental results show that the designed maximum power point tracking controller can complete charging in any light conditions. The charging current of super capacitor and battery hybrid increases 29.1% than the battery alone. It also can improve the efficiency of the PV power system.

关 键 词：太阳能光伏发电 最大功率点跟踪 占空比扰动法 超级电容 

分 类 号：TM615[电气工程—电力系统及自动化] TM933.3