基于FPGA的SPWM路灯节能系统的设计

Design of SPWM Street Lamp Energy-Saving System Based on FPGA

根据人对光强感知的研究,采用自动降压的方法改进路灯照明系统的供电方式.系统使用Al-tera II芯片,应用DDS技术生成SPWM波,驱动IGBT逆变器,通过改变正弦波的幅度来调整输出电压,实现节能.系统具有频谱良好,精确度高,体积小,参数调整容易,智能化等优点.该设计在QuartusII9.0、ModelSim-Al-tera 6.4a的混合仿真环境下验证通过.

Based on research of feeling about light intensity, the power system of public lighting is designed with method of auto voltage step - down, and LED lamp system is optimized. This system uses Altera II chips as its control center. In this system, DDS technology directly forms SPWM modulated waves to drive IGBT, adjust output voltage by changing the range of sine wave to save energy. This system has good frequency Spectrum, high accuracy, small volume, easily controlled and Intelligent etc. The system is tested and verified in Quartus II 9.0 and ModelSim - Altera 6.4a mixed simulation environment.