<p>The grid-forming (GFM) converter is operated as a synchronous voltage source, which can effectively improve the stability of power-electronics-dominated power systems. Hence, it has attracted a great deal of research attention in recent years. However, under grid voltage fault conditions, GFM converters are vulnerable to security issues such as power angle instability and excessive fault currents. To address these challenges, by analyzing the output characteristics of the GFM converter under grid fault conditions, a GFM converter low voltage ride-through (LVRT) control strategy based on the coordinated control of power angle stability and short-circuit current suppression is proposed. The active-power reference regulation is a voltage-based adjustment mechanism, where the reference is adjusted by the square of the voltage sag factor to reduce active-power imbalance and enhance power-angle stability. In parallel, by improving the reactive-power loop, the steady-state fault current is suppressed and the necessary reactive power support is provided to the grid. In addition, a dynamic virtual impedance is introduced to suppress the amplitude of transient fault current. Finally, a hardware-in-the-loop (HIL) experimental platform is established to validate the effectiveness of the proposed control strategy through real-time testing.</p>