摘要
基于反激变换器在中小功率开关电源中应用广泛,小信号模型是变换器控制回路设计的基础。阐述反激变换器的导通和截止开关流图,进而推导了变换器开关流图,对开关支路施加扰动并提取了变换器小信号模型,最终利用梅森公式推导了传递函数,并基于PSIM软件进行了仿真验证。
Flyback converter is widely used in medium and small power switching power supply. Small signal model is the basis of converter control circuit design. This paper describes the turn-on and turn-off switch flow diagram of flyback converter, and then deduces the switch flow diagram of the converter, applies disturbance to the switch branch and extracts the small signal model of the converter. Finally, the transfer function is derived by using Mason formula, and the simulation is carried out based on PSIM software.
作者
杨可
苏尚流
李恩亮
YANG Ke;SU Shangliu;LI Enliang(School of Electronic Engineering,Xi'an University of Petroleum,Shaanxi 710065,China;State Grid Quanzhou Power Supply Company,Fujian 362000,China)
出处
《集成电路应用》
2021年第4期14-16,共3页
Application of IC
关键词
开关流图法
反激变换器
小信号模型
仿真验证
switch flow diagram
flyback converter
small signal model
simulation verification
