Virtual Synchronous Generator Control with Reliable Fault Ride-through Capability by Adopting Model Predictive Control

摘要

Virtual synchronous generator (VSG) control has an important effect to support the frequency stability of power system thanks to its inertia support feature. However, with increasing penetration of inverter-based distributed generation, it is of great importance that the control scheme keeps enhancing its capacity in other key issues such as fault ride-through (FRT) capability. For this purpose, the idea of finite-set model predictive control (FS-MPC) based VSG control was studied in this paper. The proposed scheme allows multiple inputs multiple outputs (MIMO) system to control voltage and current simultaneously. Under these constantly placed voltage and current constraints, the controller displayed the ability to prevent the system from overcurrent condition. Several simulation studies are conducted in PSCAD/EMTDC to investigate the performance and FRT capability of the proposed strategy.