In the class of the boost converters, the conventional DC–DC boost converters are in common practice but their limited boost capabilities at higher duty ratios are one of the concerns. The isolated and non-isolated step-up DC–DC converters are one of the remedies of the above issue. The presence of switched inductor and switched capacitors in the circuit of non-isolated configuration can provide considerable step-up in voltage at the output, and also facilitate lower voltage stress on components. In this paper, work has been done to propose three non-isolated high-voltage gain DC–DC boost converter topologies. Along with the high voltage gain, the topologies also have lesser voltage stress across the active power switches and diodes used in topologies. The proposed topologies are suitable for low dc input levels like renewable sources, microgrid and grid-connected applications. A Matlab/Simulink 2017a environment is utilized to derive, design and simulate the proposed topologies for a 100-W load operation. The basic topology is also realized in hardware as a prototype circuit with 100-W resistive load, operated at 50kHz switching frequency.

中文翻译：

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用于可再生能源应用的电压 DC-DC 转换器拓扑中的非隔离式高压升压

在升压转换器类别中，传统的 DC-DC 升压转换器在实践中很常见，但它们在较高占空比下的升压能力有限是问题之一。隔离式和非隔离式升压 DC-DC 转换器是解决上述问题的方法之一。非隔离配置电路中开关电感器和开关电容器的存在可以在输出端提供相当大的电压升压，并且还有助于降低组件上的电压应力。本文提出了三种非隔离式高压增益 DC-DC 升压转换器拓扑结构。除了高电压增益外，拓扑结构中使用的有源功率开关和二极管上的电压应力也较小。建议的拓扑适用于低直流输入电平，如可再生能源，微电网和并网应用。Matlab/Simulink 2017a 环境用于推导、设计和模拟 100 W 负载操作的建议拓扑。基本拓扑也在硬件中实现为具有 100 W 电阻负载的原型电路，在 50千赫开关频率。