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

Liqiao Wang; Hang Jiao; Gen Yang; Jing Li; Yun Zhang

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

Vol. 22, No. 1, pp. 1-9, Jan. 2022

10.1007/s43236-021-00334-5

Parallel current sharing

Current source bidirectional isolated DC/DC converter

Low current ripple

Single phase-shifted modulation

Single-zero double-pole compensation

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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Cite this article

[IEEE Style]

L. Wang, H. Jiao, G. Yang, J. Li, Y. Zhang, "Current sharing compensation control method for interleaved current source isolated bidirectional DC/DC converters," Journal of Power Electronics, vol. 22, no. 1, pp. 1-9, 2022. DOI: 10.1007/s43236-021-00334-5.

[ACM Style]

Liqiao Wang, Hang Jiao, Gen Yang, Jing Li, and Yun Zhang. 2022. Current sharing compensation control method for interleaved current source isolated bidirectional DC/DC converters. Journal of Power Electronics, 22, 1, (2022), 1-9. DOI: 10.1007/s43236-021-00334-5.