摘要
为了提高蓄电池的充电效率和延长蓄电池的使用寿命,提出了一种新的光伏发电系统充放电控制策略。该控制策略用双蓄电池代替以前的单一蓄电池,在充电过程中,蓄电池按照光伏系统提供的电流进行充电,根据蓄电池的充电电压特性和内部的温度特性来判别充电终止电压。同时,采用电压、温度微分模糊控制算法,既能防止光照强度、温度等外部环境发生变化而导致对蓄电池充电的提前切除,又可保护蓄电池的过充。仿真结果证明,该控制策略能显著提高蓄电池的充电效率和延长蓄电池的使用寿命。
In order to improve the efficiency of the battery charge and extend the battery life, de- veloped a new charge-discharge control tactic which uses dual batteries to replace the previous single battery. In the whole process of charging with the photovoltaic system, the charging voltage of the termination based on the battery charge voltage and internal temperature characteristics; at the same time with voltage, temperature differential fuzzy control algorithm can prevent the exter- nal light intensity, temperature and environment change as a result of battery charge in advance of the removal, and can protect the battery overcharge trol tactic gets a significant high-efficiency battery c as well. Simulation results show that the con- harging and extend battery life.
出处
《可再生能源》
CAS
北大核心
2009年第3期7-10,14,共5页
Renewable Energy Resources
基金
国家自然科学基金项目(50667002)
新疆大学青年科研基金启动项目(QN070136)
关键词
光伏发电
双蓄电池
最佳充电
电压
温度微分
模糊控制
photovoltaic power generation
dual battery
the best charge
voltage temperaturedifferential
fuzzy control
