Buck变换器的一种改进型单周控制策略  

An improved one-cycle control for Buck

作　　者：侯世英[1] 宋星[1] 孙韬[1] 彭文雄[1] 

机构地区：[1]重庆大学电气工程学院输配电装备及系统安全与新技术国家重点实验室,重庆400044

出　　处：《电子技术应用》2011年第2期60-63,共4页Application of Electronic Technique

基　　金：输配电装备及系统安全与新技术国家重点实验室自主研究项目(2007DA10512709304)

摘　　要：单周控制对输入扰动有很好的抑止作用,但对负载扰动的抑止能力薄弱。在发生负载扰动时输出电压动态响应差,使单周控制的应用范围受到了很大限制。为了改善其输出电压的动态性能,通过分析负载扰动,从单周能量关系的角度提出了控制方案,并在推导出控制方程的基础上进行了仿真研究。仿真结果表明,该控制方法对输入扰动和输出扰动都具有很好的抑止作用。One-cycle control has good capacity to curb the input disturbance, but the capacity to curb the load disturbance is weak. Output voltage dynamic response is not good, when the load disturbance occurs. This problem makes the application scope of one-cycle control limited. In order to improve the output voltage dynamic response, this paper presents a new control method from the perspective of one-cycle energy relationship by analyzing the load disturbance and drives the control equation. The equation that drives finally could be used for simulation directly. Simulation results show that the new control method has good capacity to curb the input disturbance and load disturbance.

关 键 词：单周控制 单周能量关系 负载扰动 BUCK 

分 类 号：TN710[电子电信—电路与系统]