一种特殊的双向Boost变换器在LED光伏照明中的应用  

A special bi-directional Boost converter in LED photovoltaic lighting system

作　　者：张波[1] 曹丰文[1] 汪义旺[1] 高金生[1] 

机构地区：[1]苏州市职业大学电子信息工程系,江苏苏州215104

出　　处：《可再生能源》2010年第5期100-103,共4页Renewable Energy Resources

摘　　要：LED光伏照明系统是新能源技术和节能新光源技术的完美结合。LED光伏照明系统存在两个关键问题:一是光伏电池的最大功率点跟踪,二是LED的驱动,解决这两个问题都要用到直流变换器。文章给出了最大功率点跟踪的原理,比较了LED的驱动方法,分析了Boost变换器原理和双向直流变换器的构成,提出了一种适用于LED光伏照明的特殊双向Boost变换器。试验结果表明,该变换器具有采用元件较少、高效、低成本、体积较小、便于集中控制等优点。LED photovohaic lighting system is a perfect combination of new energy technology and new energy-saving technology, and has a good prospect.There are two main problems in this system： one is photovoltaic cell maximum power point tracking, the other is the LED driver, and DC converter is necessary for solving the mentioned problems. In this paper, the principle of MPPT is introduced, the comparison on methods of LED driving is carried out, the boost converter principle and the composition of bi-directional DC converter are analyzed. A novel special Bi-direetional boost converter is proposed that is appropriate and better in LED solar Lighting. The experimental results show that the converter uses fewer components, and is efficient, low-cost, smaller, easy for centralized control and so on.

关 键 词：双向Boost变换器 最大功率点跟踪 LED驱动 光伏照明 

分 类 号：TM42[电气工程—电器] TM615