Capacitors Energy Strategy Based Cascaded H-Bridge Converter for DC Port Failures

Xu Peng; Xiaohan Liu; Guolong Yang; Xijun Liu; Lixia Gao; Xinyu Zhu

Capacitors Energy Strategy Based Cascaded H-Bridge Converter for DC Port Failures

Vol. 19, No. 5, pp. 1133-1141, Sep. 2019

https://doi.org/10.6113/JPE.2019.19.5.1133

CHBC

Capacitors energy strategy

Steady DC link voltage

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Abstract

In this paper, a capacitors energy strategy based Cascaded H-bridge Converter (CHBC) for steady DC link voltage is proposed, which allow the CHBC to work while DC power fails. The topology of the CHBC is analyzed to construct the proposed strategy. The capacitors energy strategy is deduced based on the principle that the DC link voltage should be steady, the switch state should be smooth and the switch frequency should be normal. Experiments based on a three-module prototype, including static experiment, start experiment and step change experiment, proves the correctness of the strategy. They also verified the excellent fault tolerance ability and good dynamic performance of the proposed strategy.

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Cite this article

[IEEE Style]

X. Peng, X. Liu, G. Yang, X. Liu, L. Gao, X. Zhu, "Capacitors Energy Strategy Based Cascaded H-Bridge Converter for DC Port Failures," Journal of Power Electronics, vol. 19, no. 5, pp. 1133-1141, 2019. DOI: https://doi.org/10.6113/JPE.2019.19.5.1133.

[ACM Style]

Xu Peng, Xiaohan Liu, Guolong Yang, Xijun Liu, Lixia Gao, and Xinyu Zhu. 2019. Capacitors Energy Strategy Based Cascaded H-Bridge Converter for DC Port Failures. Journal of Power Electronics, 19, 5, (2019), 1133-1141. DOI: https://doi.org/10.6113/JPE.2019.19.5.1133.