Megawatt scale wind turbines have become the unit of choice in commercial wind farms. Throughout the world wind energy penetration levels continue to rise with many countries having installed wind farm nameplate capacity in excess of ten percent of the national grid. This paper presents an analytical model of a two megawatt permanent magnet synchronous generator directly connected to the wind turbine rotor shaft. Directly connected permanent magnet generators with full scale AC-DC-AC controllers have found favor within the industry because of their lower maintenance and manufacturing costs and ease of grid integration. This paper will present a full analytical model of the wind turbine and the AC-DC-AC controller connected to a stiff utility grid along with their solutions in the time domain. Space vector modulation is utilized for gating the power electronics devices.
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