The low inertia and under-damping characteristics of the inverter-dominated distributed generation unit may impact the power system stability. Using the fourth-order synchronous generator model with the excitation and valve comprehensive control

a virtual synchronous generator control scheme based on adaptive Terminal slidingmode control is designed. Two nonsingular Terminal sliding-mode functions are constructed based on the two input variables of the system. The convergence of the error is fast owing to the nonlinear Terminal sliding-mode function.As a consequence

the control effectiveness of the designed controller can be ensured. The simulative results show that the proposed control strategy can provide sufficient inertia and damping to guarantee the robustness of system in the presence of uncertain parameters and external disturbances

which can further suppress the system oscillation and improve the power system stability.