Optimization of the RC branch of the LCL filter of a SiC-based inverter

Authors

  • S. Martín-Arroyo Department of Electrical Engineering EINA, Zaragoza University María de Luna 3 – Edificio Torres Quevedo – Campus Río Ebro – 50018 Zaragoza (Spain) Author
  • M. García-Gracia Department of Electrical Engineering EINA, Zaragoza University María de Luna 3 – Edificio Torres Quevedo – Campus Río Ebro – 50018 Zaragoza (Spain) Author
  • Á. Llamazares Department of Electrical Engineering EINA, Zaragoza University María de Luna 3 – Edificio Torres Quevedo – Campus Río Ebro – 50018 Zaragoza (Spain) Author

DOI:

https://doi.org/10.52152/4540

Keywords:

LCL filter, SiC inverter, filter optimization, harmonic contents.

Abstract

This work begins with the initial design of an LCL filter for a 20 kW SiC inverter, and its response is experimentally analysed from the perspective of grid quality. Based on these results, a sensitivity analysis is carried out by varying the parameters of the RC branch. The objective is to identify the RC branch that achieves maximum efficiency in harmonic content reduction, as well as minimising losses. The conclusions drawn relate to the sizing of the LCL filter and the various possibilities for its optimisation.

The conclusions presented have been obtained with regard to the sizing of the LCL filter and the different possibilities for its optimisation.

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Published

2025-07-25

Issue

Vol. 23 No. 6 (2025)

Section

Articles

License

Copyright (c) 2025 S. Martín-Arroyo, M. García-Gracia, Á. Llamazares (Author)

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.