Reduction in Power Output Fluctuations by Parallel Running of Multiple Wind Turbines Connected to Grid

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In this study, a control method of a parallel running system using multiple wind turbines connected to a grid was developed through a numerical simulation in order to archive a good balance between a high generating capability and a fine reduction in power output fluctuations. First, the regulation method of the maximum power output that occurs at high wind speeds was developed ; then, the desired operating point of the parallel running systems, in which the number of the wind turbines ranges from 2 to 10, was analyzed. Moreover, on the basis of this analysis, the control method of the parallel running system was proposed.