High gain DC-DC converter with coupled inductor

Chao Liu; Hongwei Sun; Song Xin; Zhang Zheng; Maochuan Wu; Peng Xu

doi:10.1117/12.2513256

7 June 2019 High gain DC-DC converter with coupled inductor

Chao Liu, Hongwei Sun, Song Xin, Zhang Zheng, Maochuan Wu, Peng Xu

Proceedings Volume 10971, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XIII; 109711Y (2019) https://doi.org/10.1117/12.2513256
Event: SPIE Smart Structures + Nondestructive Evaluation, 2019, Denver, Colorado, United States

Abstract

This paper analyzes the working principle, advantages and disadvantages of traditional Boost DC-DC converter firstly, and then proposes a new type of high set-up ratio DC-DC converter topology with the coupled-inductor and voltage-doubler structure. In the following parts, it introduces the composition and the equivalent circuit of this topology in detail, and deduces its set-up ratio expression and the voltage stress expression of the switching tubes and diodes. Finally, this paper designs the main parameters and the relevant models of the topology, and makes the experimental platform. The experiment results indicate that this topology could realize high set-up ratio even under usual duty-ratio conditions, and could effectively reduce the voltage stress and switching-off loss of switching tubes, providing favorable conditions for realizing multilevel conversion of the following inverter in the photovoltaic power generation system.

Citation Download Citation

Chao Liu, Hongwei Sun, Song Xin, Zhang Zheng, Maochuan Wu, and Peng Xu "High gain DC-DC converter with coupled inductor", Proc. SPIE 10971, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XIII, 109711Y (7 June 2019); https://doi.org/10.1117/12.2513256

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