Abstract: In view of the inverter-side control of the grid simulator, the traditional proportional-integral control has problems such as static difference, delay and oscillation for the tracking of a given voltage. It is proposed that the quasi-proportional resonant（QPR） control is used in both the current inner loop and the voltage outer loop of the grid simulator inverter side. In this paper, a suitable grid simulator structure is selected, and a single-phase inverter mathematical model is established. A QPR double closed-loop controller is designed through using an LC filter. Compared with traditional proportional-integral control, the simulation verifies that the quasi-proportional resonance controller can effectively improve the tracking ability of the system to the command voltage and the stability of the output voltage. Based on the controller hardware-in-the-loop test（CHIL） technology, a power grid simulator experimental platform was built and tested to verify the feasibility of the proposed control strategy.