Stabilization Design of Three-Phase LCL-Filtered Grid-Connected Inverter Using IDA-PBC Controller

Authors

Min Huang, Zhicheng Zhang, Fan Chen, Weimin Wu, Zhilei Yao, Frede Blaabjerg

Abstract

With the aim of improving the stability of renewable energy system with high permeability in the weak grid, a modified passivity-based control based on interconnection and damping assignment (IDA) is presented for LCL-filtered grid-connected inverters to eliminate the interactive resonances. The object is modeled in the form of port-controller Hamiltonian, including the partial differential of stored energy function. On the premise of ensuring Lyapunov stability, a more flexible interconnection matrix design method is applied to simplify the design process. The closed-loop stability is ensured with the selected Hamiltonian energy function at the desired balanced point. Moreover, a step-by-step design process for damping gains is provided to guarantee stable operation and fast dynamic response under variation of complex grid impedance. With the designed injected damping parameters, considering the effect of delay, it is possible for the real part of the inverter output admittance to be positive within the switching frequency. The performance and robustness of the proposed method for LCL-filtered inverter system are validated via simulated and experimental results under both unbalanced and balanced grid conditions.

Citation

• Journal: International Transactions on Electrical Energy Systems
• Year: 2022
• Volume: 2022
• Issue:
• Pages: 1–14
• Publisher: Wiley
• DOI: 10.1155/2022/7515321

BibTeX

@article{Huang_2022,
  title={{Stabilization Design of Three-Phase LCL-Filtered Grid-Connected Inverter Using IDA-PBC Controller}},
  volume={2022},
  ISSN={2050-7038},
  DOI={10.1155/2022/7515321},
  journal={International Transactions on Electrical Energy Systems},
  publisher={Wiley},
  author={Huang, Min and Zhang, Zhicheng and Chen, Fan and Wu, Weimin and Yao, Zhilei and Blaabjerg, Frede},
  editor={Capuder, Tomislav},
  year={2022},
  pages={1--14}
}

Download the bib file

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