基于能量守恒平均模型的开关变换器建模  

Average Model Based on Energy Conservation Modeling of Switching Converters

作　　者：曾毅[1] 余明杨[1] 

机构地区：[1]中南大学信息科学与工程学院,湖南长沙410083

出　　处：《通信电源技术》2010年第4期19-21,共3页Telecom Power Technology

摘　　要：文中介绍了一种常用的开关变换器建模方法——能量守恒平均法,依据能量守恒平均原理,建立连续模式下Buck变换器的直流和小信号模型,并给出开环传递函数。仿真分析表明,该模型能够准确描述变换器的频域特性,验证了理论推导的有效性。This paper presents a modeling method commonly used in switching converters-the average of energy conservation.Based on the average conservation of energy principle,a continuous mode DC buck converter and the small-signal model are established,and given the open-loop transfer function.The proposed model is validated by detailed simulation and is shown to accurately predict small-signal frequency domain characteristics.

关 键 词：开关变换器 能量守恒 寄生参数 小信号模型 

分 类 号：TM46[电气工程—电器]