摘要
针对光伏组件输出的非线性特点,以及传统光伏充电系统直接与铅酸电池连接充电所造成的电池使用寿命下降和转换效率低的缺点,研究设计了以LTC4013为控制核心的高效率直流同步降压光伏充电系统。实验结果表明,系统实现了光伏组件的最大功率点输出和铅酸电池的3/4阶段充电算法,具有电池低电量重启、充电保护和故障可视化等功能。恒流阶段系统充电效率高达91.15%,提高了光伏组件的利用率,延长了电池使用寿命。
To handle the drawbacks in photovoltaic charging system,such as nonlinear characteristics of the output of photovoltaic modules,the reduced battery life and the low conversion efficiency caused by the direct connection between the traditional photovoltaic charging system and the lead-acid battery,a high efficiency DC synchronous buck photovoltaic charging system using LTC4013 is studied and designed.The experimental results show that the system can realize the maximum power point output and charging algorithm for the 3/4 phase of the lead-acid battery,which has the functions of the low-power restart of battery,the charge protection and the failure visualization.In the constant current stage,the charging efficiency of the system is up to 91.15%,which increases the utilization of photovoltaic modules and prolong the service life of the battery.
作者
丁琦
孟丽囡
郭莎
王亚君
DING Qi;MENG Linan;GUO Sha;WANG Yajun(School of Electronic and information Engineering,Liaoning University of Technology,Jinzhou Liaoning 121001,China)
出处
《电子器件》
CAS
北大核心
2019年第4期850-855,共6页
Chinese Journal of Electron Devices
基金
辽宁省创新人才项目(LR2016057)
关键词
电路设计
高效率变换
同步降压
最大功率点跟踪
充电算法
充电保护
circuit design
high efficiency transformation
synchronous buck
maximum power point tracking
charging algorithm
charging protection
