Design and analysis of a switched‐capacitor DC‐DC converter with variable conversion ratio,International Journal of Circuit Theory and Applications

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Design and analysis of a switched‐capacitor DC‐DC converter with variable conversion ratio
International Journal of Circuit Theory and Applications ( IF 1.8 ) Pub Date : 2020-08-04 , DOI: 10.1002/cta.2849
Naser Vosoughi Kurdkandi ₁ , Masoud Farhadi ₂ , Ebrahim Babaei ₁ , Pedram Ghavidel ₁

Affiliation

In order to increase the low voltage of renewable energy systems to a relatively high bus voltage for the downstream DC‐AC grid‐connected inverter, a new DC‐DC switched‐capacitor converter with the potential of output voltage regulation is proposed. The operational principles, with regard to the specific switching conditions, are provided the relationships for the parameter design and efficiency calculation. The topology makes it possible to integrate the high voltage gain and excellent output regulation that open a huge area of applications and create the possibility of maximum power point tracking (MPPT), which is an important advantage of proposed structure. Moreover, the most important advantages of the proposed structure are continuous input current, variety of the DC voltage source values, and the cost of the converter in comparison with the conventional structures. A comparison with other similar structures is given to show the merits of the proposed topology. Finally, the experimental results are presented to clarify the theory and feasibility of the proposed converter.

中文翻译：

变比开关电容DC-DC转换器的设计与分析

为了将可再生能源系统的低压提高到下游DC-AC并网逆变器的相对较高的母线电压，提出了一种具有输出电压调节潜力的新型DC-DC开关电容器转换器。针对特定的开关条件，提供了工作原理，以便进行参数设计和效率计算。拓扑结构使集成高电压增益和出色的输出调节成为可能，从而打开了广阔的应用领域，并创造了最大功率点跟踪（MPPT）的可能性，这是所提出结构的重要优势。此外，建议结构的最重要优点是连续输入电流，各种直流电压源值，与传统结构相比，转换器的成本更高。与其他类似结构进行了比较，以显示所提出拓扑的优点。最后，给出实验结果以阐明所提出的转换器的理论和可行性。

更新日期：2020-08-04

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