输入串联输出并联全桥变换器均压均流的一种方法

A Method Realizing Current & Voltage Share of Full-bridge Converter with S-input & P-output

本文以输入串联输出并联全桥变换器为例,分析了该变换器输入分压电容不均压和输出不均流的原因;提出了一种具有三个闭环的交错控制策略,均压环的输出分别校正两个电流内环的给定值,使输入电压高的模块输出电流变大,输入电压低的模块输出电流变小,从而实现该变换器输入分压电容的均分和输出的均流,而且,交错控制下的电流纹波抵消效应使输出滤波电容得到减小,文中最后给出了仿真和实验结果,以验证本方法的有效性。

The causes of falling short of current and voItage share of S-P Combo converter are analyzed with the sample of a S-input and P output FB converter. In order to overcome such shortcomings, a interlacing control strategy with three close-loop is presemed. The walidity of such method is validated through simulation and experimentation.