With the sustained increase in the penetration rate of grid-forming (GFM) converters in power systems

problems such as overcurrent and transient instability during system faults have drawn significant attention. This paper proposes an enhanced dynamic dq-axis current-limiting strategy (ED-CLiS) for GFM converters

which improves transient stability across all stages before and after current limiting. First

a dynamic dq-axis current-limiting strategy (D-CLiS) is proposed. This strategy regulates the power angle to prevent it from going out of control during current limiting

which is achieved by controlling the <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$d$- and <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$q$-axis current reference values to reshape the <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">${P}-\delta^{\prime}$ curve. Additionally

a large reverse acceleration area can induce excessive angle <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\delta^{\prime}$ swings

causing the D-CLiS to be triggered repeatedly and resulting in converter instability after the control exit

even without faults. A reference power control structure (RPCS) is proposed

which suppresses the phenomenon by adjusting the power reference value to control the converter's reverse acceleration area. Finally

the control strategy is verified through simulations.