独立光伏系统充放电控制器的研究与设计  

Study and Design of Solar Controller System for a Standalone Photovoltaic System

作　　者：陈亚欢 罗晓曙[1] 廖志贤[1] 黎璋霞 

机构地区：[1]广西师范大学电子工程学院,广西桂林541004

出　　处：《计算机测量与控制》2014年第6期1806-1808,共3页Computer Measurement &Control

基　　金：国家自然科学基金(11262004);广西研究生教育创新计划资助项目(YCSZ2012061);广西科学研究与技术开发计划(桂科攻1348017-2)

摘　　要：设计了一种基于STM32微处理器和Buck电路的光伏控制器,并提出了一种改进型变步长扰动观察法来提高光伏系统的最大功率点跟踪(MPPT)性能,同时实现了蓄电池的合理充放电及过放保护;样机实验结果表明:该光伏控制器能在0.01s的时间内克服扰动,并且MPPT的效率达到了99.94%,该光伏控制器具有快速的动态响应和良好的稳态性能,并能很好地监测蓄电池的状态,减少电池损耗,延长蓄电池寿命。A solar controller was designed based on STM32 microcontroller and Buck converter. And a modified Perturb and Observer （P＆O） method with variable step size was presented to improve Maximum Power Point Tracking （MPPT） performance of photovoltaic （PV） systems. At the same time, a reasonable management for charging and discharging had also been implemented on the solar controller with discharge protection. The results of sample experiments show that the solar controller can overcome the disturbance within 0.01 second, and the MPPT efficiency can reach to 99.94 percent, and it has rapid dynamic response and excellent tracking effectiveness. And it also can evalu- ate state of battery and reduce the charged wastage, and prolong the life of battery.

关 键 词：太阳能控制器 最大功率点跟踪 STM32 扰动观察法(P&O) 

分 类 号：TM571[电气工程—电器]