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Current sharing compensation control method for interleaved current source isolated bidirectional DC/DC converters

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Abstract

The isolated dual active bridge DC/DC converter is widely used in power electronic conversion systems due to its security, scalability, and easily realized soft switching. Meanwhile, interleaved technology is also widely used in high current conversion applications due to its low current ripple. Current sharing characteristics are analyzed in detail in this paper based on the topology characteristics of an interleaved low current ripple isolated DC/DC converter. At the same time, under dynamic conditions, the altering trend of the current deviation ratio and the relationship between the current deviation rate and the phase-shifted angle are revealed by small signal modeling. In addition, a single-zero double-pole compensation control method in the current loop is proposed. Finally, an experimental 670 W prototype is built to verify the correctness of the theoretical analysis and the effectiveness of the proposed method.

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Acknowledgements

This work was supported in part by the National Natural Science Foundation of China under Grant 51977145, and in part by the Zhejiang Key Laboratory of More Electric Aircraft Technology of Zhejiang Province, University of Nottingham Ningbo China (Grant No. PKLMEA20OF02).

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Authors and Affiliations

  1. School of Electrical Engineering, Yanshan University, Qinhuangdao, China

    Liqiao Wang & Hang Jiao

  2. School of Electrical and Information Engineering, Tianjin University, Tianjin, China

    Gen Yang & Yun Zhang

  3. Department of Electrical and Electronic Engineering, and Key Laboratory of More Electric Aircraft Technology of Zhejiang Province, University of Nottingham Ningbo China, Ningbo, China

    Jing Li

  4. TJU Binhai Industrial Research Institute Ltd., Tianjin, China

    Yun Zhang

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  1. Liqiao Wang
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  2. Hang Jiao
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  3. Gen Yang
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Correspondence to Yun Zhang.

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Wang, L., Jiao, H., Yang, G. et al. Current sharing compensation control method for interleaved current source isolated bidirectional DC/DC converters. J. Power Electron. 22, 1–9 (2022). https://doi.org/10.1007/s43236-021-00334-5

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  • DOI: https://doi.org/10.1007/s43236-021-00334-5

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