Analysis of a coupled inductor boost three‑port converter with high voltage gain for renewable energy systems

Ming Gao; Shanshan Wang; Weichen Yu; Tao Liu; Jianjiang Shi

Analysis of a coupled inductor boost three‑port converter with high voltage gain for renewable energy systems

Vol. 22, No. 12, pp. 2100-2121, Dec. 2022

10.1007/s43236-022-00533-8

Renewable energy system

Abstract

A conventional boost three-port converter is combined with a coupled-inductor-based boost-flyback converter in this work to produce a high-step-up three-port converter. The proposed converter inherits the benefits of two conventional converters, including high voltage gain, few elements, and energy recycling of the leakage inductor. In addition, the voltage stresses of switches are considerably lower than the output voltage. Therefore, switches with low ON resistance can be selected to reduce the conduction loss. Additionally, the freewheel diodes are capable of zero-current switching. The operation principle can be divided into three modes of operation, and the three steady-state operation modes are analyzed under each of the three conduction modes. The operation principles of various modes, the voltage characteristics, the boundary of the coupled inductor, and the proposed converter’s control method are discussed in depth to provide detailed theoretical guidance to designers. Then, the simulation and experiment results of a laboratory prototype with an 18 V PV source, 24 V battery pack, and 180 V output are presented to validate the feasibility of the theoretical analysis.

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Cite this article

[IEEE Style]

M. Gao, S. Wang, W. Yu, T. Liu, J. Shi, "Analysis of a coupled inductor boost three‑port converter with high voltage gain for renewable energy systems," Journal of Power Electronics, vol. 22, no. 12, pp. 2100-2121, 2022. DOI: 10.1007/s43236-022-00533-8.

[ACM Style]

Ming Gao, Shanshan Wang, Weichen Yu, Tao Liu, and Jianjiang Shi. 2022. Analysis of a coupled inductor boost three‑port converter with high voltage gain for renewable energy systems. Journal of Power Electronics, 22, 12, (2022), 2100-2121. DOI: 10.1007/s43236-022-00533-8.