基于PIC16单片机的正弦调光电路  

Sine wave dimming circuit based on PIC16 MCU

作　　者：戚伟[1] 邱旭伟 刘劲松[1] 庞文尧[1] 肖铎[1] 

机构地区：[1]浙江大学城市学院信息与电气工程学院,浙江杭州310015 [2]浙江大学信息与电子工程学院,浙江杭州310027

出　　处：《电子技术应用》2014年第10期30-32,36,共4页Application of Electronic Technique

基　　金：浙江省公益性技术应用研究计划项目(2014C33026);浙江大学城市学院教师科研基金项目(J-14022)

摘　　要：针对可控硅调光对电网产生干扰以及斩控型正弦调光电路成本较高的问题,提出了一种低成本的间接型正弦调光电路。系统由全桥整流滤波电路以及全桥逆变电路组成,由PIC16单片机软件产生双极性SPWM波的控制信号。实际制作了电路,并在400 W高压钠灯感性负载上进行了测试,实现了灯光亮度的连续调节,且输出电压保持为无畸变的正弦波形。该系统有望取代现有的可控硅调压节电系统,对节能降耗工程起到推动作用。A low cost indirect type sine wave dimming circuit is proposed to overcome the grid pollution of silicon controlled dimming circuit and the high cost chopping sine wave dimming circuit.The system consists of full bridge rectifier,filter and full bridge inverter.The bipolar SPWM control signal for inverter is generated by the PIC16 micro controller.The circuit is developed and used in the testing of 400 W high pressure sodium lamp inductive load.Continuous dimming with slight distortion of the sine wave is obtained.The system is attractive in the replacement of silicon controlled dimming circuit,and promotes the energy saving project.

关 键 词：正弦调光 双极性SPWM PIC单片机 

分 类 号：TM423[电气工程—电器]