Z源升压变换器

Z-source Boost Converter

传统BOO ST拓扑由于理论上的缺陷,实用输出电压有限。为了克服这些理论上的缺陷,提出了Z源升压变换器(ZBC)。该Z源升压变换器用一个独特的Z源网络把输出整流器和输入电源连接起来。通过控制主开关导通比,该变换器在导通比小于0.5的时候就很容易达到任何想要的升压比。这能解决许多升压困难的问题。仿真结果证明了这一新性能。

Because of theoretical barriers and limitations, the practical output voltage of the traditional boost topology is limited. To overcome these theoretical limitations, this paper presents a Z-source boost converter （ZBC）. The Z-source boost converter employs a unique Z-source network to couple the output converter to the source input, and by controlling the switching on period of the main switch of the converter, any desired great boost factor can be easily obtained with a much smaller duty cycle that is always less than 0.5. Thus many boost problems can be solved. Simulation results demonstrate the new feature.