Model Predictive Control-Based Virtual Inertia Emulator for an Islanded Alternating Current Microgrid

Conventional primary control employs outer-loop droop and inner-loop cascaded linear to realize local voltage regulation power-sharing of an islanded ac microgrid. However, it has a complex structure, limited dynamic response, rapid rate change frequency when disturbances occur. This article resolves these issues by proposing model predictive control-based virtual synchronous generator (VSG-MPC). An improved finite-set MPC is first proposed for the inner loop, achieving simplified faster enhanced bandwidth stability, as well current limitation. In outer VSG without phase-locked loop employed active inertia emulation. The merits above are verified description function frequency-domain response overall VSG. Simulation experimental results verify feasibility method.