  In modern power systems, grid-forming power converters (GFMCs) have emerged
as an enabling technology. However, the modeling of single-phase GFMCs faces
new challenges. In particular, the nonlinear orthogonal signal generation unit,
crucial for power measurement, still lacks an accurate model. To overcome the
challenges, this letter proposes a dynamic phasor model of single-phase GFMCs.
Moreover, we linearize the proposed model and perform stability analysis, which
confirm that the proposed model is more accurate than existing models.
Experimental results validate the improved accuracy of the proposed dynamic
phasor model.
