Inverters need to evacuate clean power by following ments, however, they are usually located far from the grid require main users. This electricity needs to be sent through transmission lines where faults can occur affecting the stability of the inverter. The paper investigates the control and stability of inverters during faults on different strength grids. A 2.3 MW inverter with a synchronous reference frame phase locked loop (SRF-PLL) and current controller was designed and simulated in Simulink. Various voltage phase and magnitude disturbances were tested on the inverter first using industry-standard testing, then trying to simulate a transmission line and creating faults with a different X/R ratio impedance. The inverter was stable for most faults, however, severe voltage drops caused the inverter to become unstable due to the PLL losing synchronization. When switching impedanceses into the network to simulate faults, those with a lower X/R ratio behaved like the phase shift test and faults with higer X/R ratios behaved more like a voltage drop test.