Research on microgrids grid-connected inverter system based on improved PLL

Fulin Chen; Aicong Li; Chunzhi Chen

doi:10.1117/12.3024569

13 May 2024 Research on microgrids grid-connected inverter system based on improved PLL

Fulin Chen, Aicong Li, Chunzhi Chen

Proceedings Volume 13159, Eighth International Conference on Energy System, Electricity, and Power (ESEP 2023); 131596A (2024) https://doi.org/10.1117/12.3024569
Event: Eighth International Conference on Energy System, Electricity and Power (ESEP 2023), 2023, Wuhan, China

Abstract

In this paper, we study a grid-connected inverter system based on improved PLL. Firstly, the power quality of the microgrid grid-connected system is analyzed from different angles. Then, the structure of the the loop and its phase-locking principle are briefly introduced, and the limitations of the software loop are indicated. Subsequently, the improved scheme of using second order generalized integral to extract positive order components and eliminate harmonics is analyzed in detail. Finally, we build a simulation model using MATLAB to improve the phase locked loop, and it shows that the adopted phase locked loop can correctly and quickly phase locking during the grid voltage distortion.

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

Citation Download Citation

Fulin Chen, Aicong Li, and Chunzhi Chen "Research on microgrids grid-connected inverter system based on improved PLL", Proc. SPIE 13159, Eighth International Conference on Energy System, Electricity, and Power (ESEP 2023), 131596A (13 May 2024); https://doi.org/10.1117/12.3024569

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