Cooperative Virtual Inertia Control of PMSG based Wind Generator and Battery for Power System Stability Enhancement

Abstract

Recently, renewable energies are attracting attention because of no CO2 emission and no dissipations of fossil fuel. Renewable energy generation systems are promising energy sources, but there is a problem that they do not have, in general, inertia and synchronizing power. If the system inertia and the synchronizing power of the system decrease, the stability of the system will decrease. Therefore, various researches have been conducted to add virtual inertia effect to asynchronous dispersed power sources. In this paper, cooperative virtual inertia control of variable-speed wind power generator using a permanent magnet synchronous generator (PMSG) and large storage battery is proposed, in which Fuzzy Logic is adopted to design the cooperative virtual inertia control system.