一种高升压比交错并联的DC/DC变换器

High boost ratio staggered parallel DC/DC converter

为了在储能系统、新能源发电系统中获得较高的电压输出,提出了一款具有高升压比能力的交错并联BOOST拓扑结构。通过在电路中引入一个带电压特性的电容器,改变传统交错并联拓扑二极管的位置,提高电压增益。结果表明,电压增益是传统结构的两倍,功率开关管、二极管的电压应力是BOOST拓扑的二分之一。该电路拓扑在需要较高升压场合下具有较高应用前景。

This paper aims to achieve higher voltage output in energy storage system or new energy power generation system and proposes a staggered parallel BOOST topology with high lift ratio capability,in which a capacitor with voltage characteristics is introduced into the circuit,leading to a change in the position of the traditional interleaving topology diode and a consequent improvement in the voltage gain.The results show that the proposed structure has twice voltage gain of existing structure and voltage stress of power switches and diodes is half of that of BOOST topology.The circuit topology promises a wider application where high boost is required.