全桥型DC/DC开关电源的建模与控制  

Modeling and Control of Full-bridge DC/DC Switching Power Supply

作　　者：王兴贵[1] 邹应炜[1] 刘金龙 

机构地区：[1]兰州理工大学,甘肃兰州730050 [2]靖远第二发电有限公司设备技术部,甘肃靖远730919

出　　处：《电力电子技术》2007年第7期86-88,共3页Power Electronics

摘　　要：应用状态空间平均法建立了全桥型DC/DC变换器的动态小信号数学模型,依此得出了电压闭环系统控制框图和传递函数。在此基础上应用自动控制理论校正了该系统,并分析了补偿网络对系统动、静态性能的影响,最后通过MATLAB仿真结果和实验波形验证了小信号数学模型的正确性和实用性。A small signal mathematical model of full-bridge DC/DC converter was constructed by the state-space ,averaging method and the voltage closed-loop system block diagram and transfer function were derived.Then the system was corrected with automatic control theory.The effect of compensating network on dynamic and static property of system is discussed.In the end,the simulative results by MATLAB and the laboratory report verify that the small signal model is correct and feasible.

关 键 词：电源 数学模型/开关电源 状态空间平均法 

分 类 号：TN86[电子电信—信息与通信工程] TP301.6[自动化与计算机技术—计算机系统结构]