An inverter control strategy based on current delay compensation is studied for the three-level inverter grid connection system. Firstly, according to the topology of the three-level inverter grid connection system, an improved space vector modulation strategy is studied, which can effectively reduce the common mode voltage. Then, the active damping control method based on capacitive current feedback and the current half-cycle control strategy based on compensation delay are studied. The analysis shows that the half-cycle control strategy can avoid impedance polarity jump and improve the stability of the system. Finally, the effectiveness of the method is verified by simulation and experiment.