In renewable energy generation systems, the DC–DC converter with high voltage gain is indispensable, which is used to convert the low output voltage of photovoltaic (PV) cells and fuel cells to the high DC bus voltage. In this study, a cost-effective clamping capacitor boost (CCB) converter with high voltage gain is proposed. In the basis of the conventional boost converter, a clamping capacitor cell with two capacitors and two diodes is embedded. Then, the voltage gain of the proposed CCB converter can be doubled compared with the conventional boost converter. Further, unlike the switched capacitor high voltage gain converter, there is no large current spikes on the capacitors in the proposed CCB converter, which can reduce the current stresses and the costs of capacitors a lot. The operation principles and characteristics of the proposed CCB converter are analysed in detail and verified by simulation. Finally, a 450 W prototype is implemented to validate the performances and advantages of the proposed CCB converter. The proposed CCB converter provides a cost-effective choice for high voltage gain converters in the renewable energy generation system with PV cells.

中文翻译：

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具有高电压增益的高性价比钳位电容器升压转换器

在可再生能源发电系统中，具有高电压增益的DC-DC转换器是必不可少的，该转换器用于将光伏（PV）电池和燃料电池的低输出电压转换为高DC总线电压。在这项研究中，提出了一种具有高电压增益的具有成本效益的钳位电容器升压（CCB）转换器。在传统的升压转换器的基础上，嵌入了具有两个电容器和两个二极管的钳位电容器单元。然后，与传统的升压转换器相比，建议的CCB转换器的电压增益可以加倍。此外，与开关电容器高压增益转换器不同，在所提出的CCB转换器中，电容器上没有大的电流尖峰，这可以大大降低电流应力和电容器的成本。详细分析了所提出的CCB转换器的工作原理和特性，并通过仿真进行了验证。最后，实现了一个450 W的原型，以验证所提出的CCB转换器的性能和优势。拟议的CCB转换器为具有PV电池的可再生能源发电系统中的高压增益转换器提供了一种经济高效的选择。