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While a variable speed, variable power turbine generator system is essential for maximum power extraction of the available power in a tidal stream, injection of a highly fluctuating power to the grid can result in degradation of the voltage quality. This investigation begins with an examination of the effect of injecting such variable powers to a non-stiff grid. A solution design based on a composite voltage source converter with separate P and Q controls is proposed. Finally an example system is designed and simulated using tidal shape data, to verify the feasibility of the proposed system.
Innovative Smart Grid Technologies (ISGT), 2012 IEEE PES
Date of Conference: 16-20 Jan. 2012