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Study on Interleaved Three-Switch Buck-Boost Converters with Co-directional Coupling Inductor

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Abstract

In order to obtain soft switching and simplify the controlling circuit of an interleaved two-switch Buck-Boost converter, two types of three-switch interleaved Buck-Boost converters are proposed in this paper. Firstly, this paper analyses the coupling process of the presented converters under a large coupling coefficient. Then, the operating principle of the two converters is given in detail. And it is concluded that the expended duty cycle and soft switching of most of power devices can be obtained and a sharing-current circuit is also not needed. This will deeply simplify the controlling circuit. Finally, the simulation and experimental results verify the analysis.

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Acknowledgements

This work was supported by National Natural Science Foundation of China (51707078), Research Subject on 2th National Vocational Education Teacher Teaching Innovation Team (ZI2021020406), Research subject on Jiangsu Basic Science (Natural Science) of Colleges and Universities (22KJD460002), Graduate Research and Innovation Projects of Jiangsu Province (2021/11), Nantong Municipal Science and Technology Program (JCZ18037), and Research Subject on 5th Jiangsu Occupational Pedagogics Reform (ZYB625).

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Authors and Affiliations

  1. School of Electromechanics, Jiangsu College of Engineering and Technology, Qingnian Middle Road, Nantong, China

    Xianjin Zhang, Wenjing Ma, Hairong Zhu & Shubo Bi

  2. School of Electronic Engineering, Jiangsu Ocean University, Cangwu Road, Lianyungang, China

    Di Wu

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  1. Xianjin Zhang
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  2. Wenjing Ma
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Correspondence to Xianjin Zhang.

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Zhang, X., Ma, W., Zhu, H. et al. Study on Interleaved Three-Switch Buck-Boost Converters with Co-directional Coupling Inductor. J. Electr. Eng. Technol. 19, 407–417 (2024). https://doi.org/10.1007/s42835-023-01530-y

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