新型准Z源级联升压变换器

摘要

A new type of voltage-fed quasi impedance source DC-DC converter was proposed.This kind of converter is cascade composed of impedance network with high voltage transmission ratio.With the same duty cycle and input voltage,it has the wider range of practical output voltage and higher efficiency.The impedance network with high voltage transmission ratio is composed of energy storage inductance L1 and SLCC type with two ports impedance network units connected in cascade.Using the MATLAB/Simulink to perform the simulation for the dc converter circuit.The experimental circuit based on TMS320F2812 is built,both of the experimental results and simulation results verify the reliability and validity of the circuit.%在准Z源升压变换器的基础上提出一种新型的准阻抗源级联DC-DC变换电路,在开关管占空比和输入电压相同的情况下,具有范围更广的实用输出电压并且效率更高.电路拓扑由大升压比阻抗网络依序级联构成,大升压比阻抗网络是由储能电感L1和依序级联的两个相同的SLCC型二端口阻抗网络单元串联构成.用MATLAB/Simulink对电路仿真,最后在仿真结果的基础上用TMS320F2812搭建出实验电路,实验结果和系统仿真结果共同验证了电路结构的可靠性和正确性.