Adaptive Terminal Sliding Mode Backstepping Control for Virtual Synchronous Generators

Abstract

A novel control strategy based on microgrid (MG) is proposed in this paper to improve the low inertia characteristics of traditional voltage source three-phase converters (VSC). The proposed control strategy consists of the Virtual Synchronous Generator (VSG), backstepping control and adaptive terminal sliding mode control. The VSG can improve the virtual inertia of the system in the application of inverter, the sliding mode method can improve the robust performance of the system, and the adaptive control method can be used to compensate the parameter transient error of the system. The low inertia characteristic of MG system in traditional VSC is improved. The simulation results has shown that the designed controller has better antiinterference and inertia performance.