Offline parameter identification method considering the nonlinear characteristics of grid-connected inverter controller

• DOI: 10.1049/icp.2023.2312
• Publication Date: 2023-11-13T20:09:02Z
• Authors: L. Zhang; S. Li; S. Xu; Y. Li; Q. Chen; X. Jiang
• Keywords: Transient (computer programming); Identification

The correct model parameters play important role in fault characteristics analysis and protection design. It is a necessity to identify the based on external due problem of black-box. However, existing studies lack concerns nonlinear control system during transient, cannot transient converter. Therefore, inverter parameter identification method dynamic phase-locked loop (PLL) proposed this paper. revealed that influence process PLL model. Considering PLL, current established. A structural similarity (SSIM) was proposed. Simulation examples show can accurately.