Progress and challenges of power decoupling technology in photovoltaic inverters

Baiyou Chen; Qingyao Deng

doi:10.1117/12.3052200

11 December 2024 Progress and challenges of power decoupling technology in photovoltaic inverters

Baiyou Chen, Qingyao Deng

Proceedings Volume 13445, International Conference on Electronics, Electrical and Information Engineering (ICEEIE 2024); 134450M (2024) https://doi.org/10.1117/12.3052200
Event: International Conference on Electronics. Electrical and Information Engineering (ICEEIE 2024), 2024, Haikou, China

Abstract

The source of power instability is one of the numerous variables contributing to the low efficiency of single-phase solar inverters. Power instability directly impacts the energy conversion efficiency of the photovoltaic system. The key to solving this issue is power decoupling technology, which effectively improves the working efficiency of photovoltaic inverters by separating the mutual interference of reactive power and active power and balancing AC and DC power conversion. This article, based on existing literature and research results, focuses on analyzing the two main problems of photovoltaic inverter power instability: the power coupling problem, where reactive power and active power interfere with each other, and the unbalanced AC-DC power conversion causing secondary voltage ripple problems on the DC side. By reviewing the causes, impacts, and power decoupling solutions of these two problems, this article further compares the advantages and disadvantages of different power decoupling methods. Additionally, the article discusses the future development trend of power decoupling technology, and the challenges faced when studying new power decoupling strategies, aiming to provide valuable reference for further research and optimization of photovoltaic inverters.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Baiyou Chen and Qingyao Deng "Progress and challenges of power decoupling technology in photovoltaic inverters", Proc. SPIE 13445, International Conference on Electronics, Electrical and Information Engineering (ICEEIE 2024), 134450M (11 December 2024); https://doi.org/10.1117/12.3052200

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