摘要
设计一种以微处理器MSP430F2619为控制核心,输出可变的PWM波驱动光耦TLP250和PID算法实现电压、电流反馈,实现输出电压不变和电流按比例输出的系统。经测试,该系统输出电压相对误差小于0.7%,输出电流相对误差小于2%。采用基于TLP250的并联供电系统具有精度高、反应灵敏、稳定性好、输出范围宽的特点。
In the paper,a method is proposed,which uses microprocessor MSP430F2619 as the control core,output variable PWM wave drive optocoupler TLP250 and PID algorithm are used to realize voltage and current feedback.The output voltage constant and current proportional output are realized.After testing,the relative error of the output voltage of the system is less than 0.7%,and the relative error of the output current is less than 2%.The parallel power supply system has the characteristics of high precision,responsiveness,good stability and wide output range.
作者
皮波
杜宇飞
Pi Bo;Du Yufei(Civil Aviation Chongqing Air Traffic Control Branch,Chongqing 401120,China;Emergency Center of Flood Control and Drought Relief in Chongqing)
出处
《单片机与嵌入式系统应用》
2018年第11期67-71,74,共6页
Microcontrollers & Embedded Systems
关键词
开关电源
并联供电
PWM调制
PID算法
switching power supply
parallel power supply
PWM modulation
PID algorithm
