V^2控制Buck转换器的预测无差拍控制器设计  

Predictive dead-beat controller design for V^2 controlled Buck converter

作　　者：陈晨[1] 童乔凌[1] 张侨[2] 闵闰[1] 

机构地区：[1]华中科技大学光学与电子信息学院,湖北武汉430074 [2]武汉理工大学自动化学院,湖北武汉430070

出　　处：《华中科技大学学报（自然科学版）》2016年第4期28-31,共4页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(61202469);教育部博士学科点专项科研基金资助项目(20120142120102)

摘　　要：为了提高DC-DC开关电源的瞬态响应速度,针对Buck转换器提出了一种V2预测无差拍控制算法.基于V2预测无差拍控制的Buck转换器系统结构,根据输出电压纹波的特点提出了适用于V2控制Buck转换器的预测无差拍控制.进一步提出了改进的V2预测无差拍控制器,使该算法更易于数字实现.Simulink仿真验证结果表明:与传统电压模式控制相比,V2控制算法在输入电压变化2V条件下,调整时间缩短60%;在负载变化2Ω条件下,调整时间缩短58.3%.In order to improve transient response speed of direct current-direct current（DC-DC）switching power supplies,a V^2 predictive dead-beat control algorithm was proposed.Based on the system structure of V^2 predictive dead-beat controlled buck converter and according to the characteristics of the output voltage ripple,apredictive dead-beat control applied to V^2 controlled buck converter was introduced.An improved predictive dead-beat controller was further investigated,which was easier to implement by digital devices.The Simulink simulation results show that compared with conventional voltage control mode,the response time is reduced by 60% when input voltage changes 2Vand by58.3% when load changes 2Ω.

关 键 词：数字控制 Buck转换器 V^2控制 预测控制 无差拍控制 线性外推 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]