DFIG-Based Power Plant: System Description and Performance

This paper describes the components and demonstrates the performance of a conceptual DFIG-based power plant. The DFIG-based generator is fed by an AC-AC converter system in MMMC topology. This concept enables to operate the gas turbine at maximum output power without additional stress on turbine under low system frequency situation. The converter system with high dynamic control capability provides several enhancements such as post-fault fast voltage recovery, oscillations reduction as well as prolonged angle stability. The paper demonstrates the fault right through capability of the conceptual power plant in comparison to a similar rating synchronous generator as well.