摘要
由于当前能源紧张所带来的严峻局势,寻找替代能源是非常必要而且有意义的事情,因此太阳能和LED开始引起人们的关注。该文在介绍了LED和太阳能优点的基础上,提出了将两者结合应用于太阳能LED照明系统。该系统设计的关键部分是驱动电路。电路应用BUCK变换电路,采用PID算法调整PWM信号输出给BUCK电路的开关管实现恒流。同时由于DSP功能强大,作为控制器很好的简化了硬件电路,使得系统简单可靠地实现智能控制,而且利用DSP使得系统具有可扩展性。
It is very essential and significant that new resource will be found, because of the serious resource shortage. The solar energy and the Light - Emitting Diode （LED） attract people. The union application of the LED illumination and the solar energy is introduced in this article based on the introduction of their merits. The design of actuation circuit is the essential part of LED illumination. BUCK converter circuit is applied, and the PID algorithm is used to adjust the PWM signal which is output to the switch of the BUCK circuit in order to realize the constant current. At the same time, as the controller. The hardware is saved because of formidable DSP, and the system has the characteristic of simple structure,reliability, intelligence, and extendibility.
出处
《工业仪表与自动化装置》
2008年第1期82-84,共3页
Industrial Instrumentation & Automation
基金
上海市重点学科建设基金项目资助(T0103)
关键词
LED
太阳能
恒流
DSP
LED
solar energy
constant current
DSP
