宽电压输入智能光伏充电控制系统  

Photovoltaic Intelligent Charging System with Wide Input Voltage Range

作　　者：闫亮[1] 陶智[1] 许宜申[1] 张鑫[2] 顾晓辉[2] 朱贤震[1] 

机构地区：[1]苏州大学物理科学与技术学院,苏州215006 [2]南京铁道职业技术学院电子电气工程系,苏州215137

出　　处：《信息化研究》2012年第3期26-29,41,共5页INFORMATIZATION RESEARCH

基　　金：江苏省高等学校大学生实践创新训练计划资助项目(11cxsj015);苏州大学学生科研基金资助项目;2011年度太仓科技创新创业领军人才计划资助项目

摘　　要：设计一款具有最大功率点追踪功能的宽电压输入智能光伏充电控制系统。系统采用恒压法和小步长扰动观察法相结合的方式,实现最大功率点的跟踪控制,通过对充电电压、充电电流及蓄电池表面温度的检测,智能地选择快速脉冲充电、浮充充电、自动停止充电等工作模式,使充电过程始终处于安全状态。实际运行结果表明:该系统可在5～26V的输入电压范围内正常工作,充电过程精确可控。A photovoltaic intelligent charging system with maximum power point tracking （MPPT） and wide input voltage range is presented. The MPPT is implemented with the combined algorithm of constant volt- age method and small-step disturbance observation method. The working mode is automatically switched among the fast pulse charging, float charging and top-off charging based on the charging voltage and current as well as surface temperature of the lead-acid battery, which could ensure the charging process in a safe state. The pa- rameters such as the charging current, the voltage and surface temperature of the lead-acid battery are displayed on a serial port LCD terminal. The result of operation indicates that the system can work with the input voltage ; range from 5V to 26V and the charging process could be controlled precisely.

关 键 词：光伏充电系统 宽电压输入 最大功率点追踪 脉冲充电 

分 类 号：TM910.2[电气工程—电力电子与电力传动]