In this paper, a modified and improved high gain dc–dc boost converter is proposed. The converter has utilized two voltage multiplier cells (VMCs) comprising switched capacitors (SC) and switched inductors (SL) to increase the voltage gain of the converter. The basic concept of these switched topologies is that when the switch is ON, the energy is stored by the inductor and the capacitor transfers its energy to load and inductor. In the OFF cycle, the inductor transfers its energy to the capacitor, and, simultaneously, capacitor is charged through input voltage also. As compared to other nonisolated topologies, the proposed converter has a high voltage gain and low voltage stress across semiconductor devices. The voltage stress on all capacitors except the output capacitor is less than the voltage across the load. A detailed analysis of the converter in continuous conduction (CCM) and discontinuous conduction modes (DCM) is shown. The proposed converter has a peak efficiency of 94.8%. For the efficiency calculation of the proposed topology, PLECS software is used. The experimental results agree with the theoretical analysis and validate the working and performance of the proposed converter.

中文翻译：

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降低电压应力的无变压器高增益DC-DC升压转换器

在本文中，提出了一种改进的改进型高增益dc-dc升压转换器。转换器利用了两个电压倍增器单元（VMC），包括开关电容器（SC）和开关电感器（SL），以增加转换器的电压增益。这些开关拓扑的基本概念是，当开关接通时，能量由电感器存储，而电容器将其能量传递给负载和电感器。在关断周期中，电感器将其能量传递到电容器，同时，电容器也通过输入电压充电。与其他非隔离拓扑相比，所提出的转换器在半导体器件上具有高电压增益和低电压应力。除输出电容器外，所有电容器上的电压应力均小于负载两端的电压。显示了转换器在连续导通（CCM）和不连续导通模式（DCM）下的详细分析。拟议的转换器具有94.8％的峰值效率。为了计算所提出的拓扑的效率，使用了PLECS软件。实验结果与理论分析相吻合，并验证了所提出的转换器的工作和性能。