A novel composite control method is proposed in this paper aiming at the requirements of transient response and antiinterference performance in applications of transient energy feedback of girdconnected inverter. The method combines the advantages of repetitive control and sliding mode variable structure control. The tracking characteristic of sliding mode variable structure control is optimized using repetitive control, and the composite control method effectively suppresses the gridconnected current harmonics, speeds up the system dynamic response speed and improves the system antiinterference performance. Simulation and experiment results show that the fifth harmonic distortion of the gridconnected current is controlled to 1.5%, and the grid side power factor is close to 1. Furthermore, with the fast transient response of dynamic current, the effect of energy variation on dc bus voltage is effectively restrained, which proves the effectiveness of the proposed composite control method.