LOW STRESS HIGH GAIN BOOST CONVERTER FOR SOLAR CELLS

Xu Jie; Ma Xiaosan

doi:10.19912/j.0254-0096.tynxb.2022-1707

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Acta Energiae Solaris Sinica ›› 2024, Vol. 45 ›› Issue (2) : 480-488. DOI: 10.19912/j.0254-0096.tynxb.2022-1707

LOW STRESS HIGH GAIN BOOST CONVERTER FOR SOLAR CELLS

Xu Jie, Ma Xiaosan

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Abstract

In the process of solar energy development and utilization, Boost converter can achieve high voltage Boost ratio, but there is a problem of high voltage stress of switching devices. In order to reduce the switching device voltage stress a low stress high gain Boost converter basic structure is proposed, which reduces the voltage stress while increasing the voltage gain. In order to better apply to a variety of boosting situations, four types of boosting units, namely secondary Boost network, switched inductor network, switched inductor-capacitor network and quasi-Z source network, are replaced with their energy storage inductors to obtain a class of low-stress high-gain Boost converter. The operating characteristics of the high-gain Boost converter replaced by using quasi-Z source network are analyzed and compared with the same type of converter. Finally, the correctness and feasibility of the theoretical analysis of the proposed converter are verified by using Matlab/Simulink simulation software and experimental prototypes.

Key words

PV power generation / quasi-Z source / Boost unit / high gain / low stress / Boost converter

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Xu Jie, Ma Xiaosan. LOW STRESS HIGH GAIN BOOST CONVERTER FOR SOLAR CELLS[J]. Acta Energiae Solaris Sinica. 2024, 45(2): 480-488 https://doi.org/10.19912/j.0254-0096.tynxb.2022-1707

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