基于Simulink模型的Buck变换器设计与控制

Design and Control of Buck Converter Based on Simulink Model

为了设计一款具有高稳压、低纹波性能的Buck变换器,使用Simulink建立Buck变换器仿真模型,采用电压外环和电流内环电路设计双闭环控制器,利用IR2110搭建了驱动电路,并设计了光耦隔离电路对驱动电路进行电气隔离。实验结果表明,输出的稳定为24V,纹波电压为80mV,符合设计的要求。

In order to design a Buck converter with high stable pressure and low ripple peiformance, Sim- ulink is used to build the Buck converter simulation model. A double closed loop controller is designed u- sing voltage outer ring and current inner ring circuit. The driving circuit is built with IR2110 and an opti- cal coupling isolation circuit is designed to electrically isolate the drive circuit. The experimental results show that the output is stable at 24V and ripple voltage is 80mV, which meets the design requirements.