Work

A physically-inspired method for robust configuration of control parameters of PLL-based VSC to enhance transient stability

Year: 2025

Type: article

Abstract: This paper proposes a physically-inspired robust configuration method to tune the power and current control loop parameters of a grid-connected voltage source converter (VSC) that utilizes the phase-locked loop (PLL), with the goal of improving the transient stability of the closed-loop system. To be specific, by modeling the PLL dynamics as a second-order motion system, the VSC’s control parameters are optimized to enhance the beneficial restoring force that essentially pulls the PLL back to the steady state when a large disturbance occurs. Particularly, the configuration process employs the linearized model of the system, making the optimization analytical and easily implemented. Moreover, the robustness of the tuned parameters with respect to the operating point drift of the VSC is also considered during the parameter optimization. Comparative simulations show the superiority of the proposed method in enhancing the transient stability of the VSC as well as in the robustness of control performance.

Source: International Journal of Electrical Power & Energy Systems

DOI: 10.1016/j.ijepes.2025.110824

Authors: Deping Ke, Jiqi Li, Huanhuan Yang, Jian Xu, Siyang Liao, Liangzhong Yao

Institutions: Wuhan University, China Southern Power Grid (China)

Language: English

Topic: Microgrid Control and Optimization

Subfield: Control and Systems Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: gold

Estimated APC paid: $3,920