Work

An active damping control strategy for suppressing LCL resonant point migration for three-phase grid-tied inverter

Year: 2024

Type: article

Abstract: LCL filters are extensively utilized in Grid-connected inverters due to their exceptional capability in suppressing high-frequency harmonics. The active damping method is commonly employed to mitigate the resonance peak of the LCL filter. However, this control strategy induces a shift in the natural resonance point. To address this issue, a novel active damping control strategy based on the principle of equivalent transformation is proposed in this paper, which not only effectively suppresses the resonance peak but also avoids deviation from the natural resonance point. Finally, experiments are carried out on a three-phase LCL Grid-connected inverter, and the experimental results show that the control strategy has good steady-state performance, dynamic response, and robustness under both rigid and ultra-weak network conditions.

Source: Scientific Reports

DOI: 10.1038/s41598-024-73897-5

Authors: Dongdong Chen, Shengqi Zhang, Hongyi Lin

Institutions: Minnan University of Science and Technology, Fuzhou University, Xi'an Jiaotong University

Language: English

Topic: Microgrid Control and Optimization

Subfield: Control and Systems Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Industry, innovation and infrastructure, Affordable and clean energy

Open Access status: gold

Estimated APC paid: $2,590