基于开关电感和开关电容，提出了一种新颖的结构可拓展的高增益DC/DC变换器。首先对高增益DC/DC变换器的研究现状进行分析；其次对基于开关电感和开关电容的串联拓扑结构进行分析；接着对所提出的新颖的基于开关电感和开关电容的高增益变换器的工作原理和主要波形进行研究；紧接着对新颖高增益变换器的电压增益和开关管、二极管的电压应力进行研究；然后对新颖高增益变换器进行状态空间方程的建模并设计PI调节器，最后对所提系统进行Simulink闭环控制系统仿真。仿真结果表明：闭环系统具有优良的动态和稳态性能，实现了20倍电压增益的输出，新颖DC/DC变换器具有结构可拓展和高增益的优点。

Based on switched inductors and switched capacitors, a novel high-gain DC/DC converter with expandable structure is proposed. The article firstly analyzes the current research status of high-gain DC/DC converters; secondly, it analyzes the series topology based on switched inductors and switched capacitors; and then it analyzes the proposed novel high-gain converter based on switched inductors and switched capacitors. After the analysis, the working principle and main waveforms of the converter are studied; the voltage gain of the novel high-gain converter and the voltage stress of the switch tube and diode are studied; the state-space equation is modeled for the novel high-gain converter, the PI regulator is designed, and finally the Simulink closed-loop control system simulation of the proposed system is carried out. The simulation results show that the closed-loop system has excellent dynamic and steady-state performance, and achieves an output of 20 times the voltage gain. The novel DC/DC converter has the advantages of expandable structure and high gain.