As a novel model-based and information-driven nonlinear method, Energy Shaping Control (ESC) has advantages, including excellent stability, fast dynamic response, and low computational complexity for grid-connected inverter control, but its control accuracy is sensitive to model parameter deviations. To this end, an Improved Energy Shaping Control (IESC) method based on online model parameter identification is proposed. Firstly, the ESC method is designed, followed by a stability analysis. Secondly, the influence mechanism of model parameter deviations is studied, and an adaptive online parameter identification strategy is developed. Finally, the experimental results confirm that the IESC not only preserves the inherent merits of the ESC but also exhibits superior steady-state performance and enhanced robustness against model parameter deviations.
Li et al. (Thu,) studied this question.