基于数字PID切换控制的Buck变换器研究

Research on buck converter based on digital PID switching control

为了改善DC-DC变换器的稳态性能,提出一种数字PID切换控制的技术。与传统的数字PID控制技术不同,切换PID控制是通过设定一个误差值,通过对电压误差值与设定值比较,进行PID控制的切换。以数字PID切换控制Buck变换器为例,通过Simulink进行仿真,分析了其稳态性能。结果表明,在负载或输入电压变化的情况下,数字PID切换控制能够在保持良好的瞬态响应的同时,获得良好的稳态性能。

In order to improve the steady-state performance of DC-DC converters,a digital PID switching control technology is proposed.Different from traditional digital PID control technology,it switches the PID control by comparing the voltage error value with the setting value.This thesis takes digital PID switching control buck converter as an example and analyzes its steady-state performance which is simulated by Simulink.The results show that the digital PID switching control can obtain good steady-state performance while maintaining a good transient response when the load or input voltage changes.