一种带有泵升电容的新型高增益升压直流变换器

摘要

为了满足分布式发电系统中必须把太阳能、燃料电池和蓄电池输入的低压直流转换为高压的要求，在传统型升压直流变换器的基础上，提出了一种基于双电感和泵升电容的新型拓扑结构。该拓扑结构利用电感和电容的并联充电、串联放电特性，较好地实现了低占空比条件下高电压增益的目标。最后，分析了该拓扑结构在3种不同电感条件下的工作原理，并通过仿真验证了上述理论分析的正确性。%In order to meet the demands of the distributed generation system for converting low direct current (DC) input voltage from solar,fuel cell and battery to high output voltage,a novel Boost converter topology with a charge pump capacitor and double inductors based on the traditional Boost converter is proposed.The proposed converter realizes the high voltage gain under low duty cycle by charging through the inductors and capacitor in parallel and discharging through the inductors and capacitor in series.The operation principle and steady-state analysis are provided in three different inductance conditions. Finally,the results of the analysis are verified by simulation.