基于PI控制器的Buck型DC-DC变换器Simulink建模与仿真

Simulink Modeling and Simulation of Buck Type DC-DC Converter Based on PI Controller

在电力专用电子元器件相关领域中,对于开关电源中最典型的Buck型DC-DC变换器的稳态性能与暂态性能研究较少。文中基于PI控制方法,构建了Buck型DC-DC变换器电路模型,应用Simulink平台建模与仿真,得到了输出电压、电流与占空比的波形图,完成了暂稳态性能随PI参数变化规律的研究,发现优先进行比例系数调节得到的性能更优,能够使其在相关领域中更高效地达到电力系统运行指标要求。

In the field of power specific electronic components,there is relatively little research on the steady-state and transient performance of the most typical Buck type DC-DC converter in switching power supplies.Based on the PI control method,a Buck type DC-DC converter circuit model was constructed in the article.The Simulink platform was used for modeling and simulation,and the waveform diagrams of output voltage,current,and duty cycle were obtained.The study of the transient and steady-state performance changes with PI parameters was completed.It was found that priority was given to adjusting the ratio coefficient to obtain better performance,which can enable it to more efficiently meet the requirements of power system operation indicators in related fields.