Abstract
This paper presents an adaptive power control algorithm for a Direct-drive PM wind generation system in a micro grid. The strategy is based on the vector control algorithm for a two-level IGBT full power converter. The object of this novel control is to operate the wind generation, with a hybrid DC-AC link topology, either in Maximum Power Point Tracking (MPPT) mode, or non-MPPT mode with enhanced tracking performance. The simulation proves that the proposed MPPT algorithm is much faster, more robust and adaptive to changes of the environment than the conventional variable-step Hill Climbing Search (HCS) algorithm, while the non-MPPT module has a fast response to the change of the power demand and the environment, and accurate steady state response as well. Moreover, the result shows that the control strategy can switch between the MPPT and non-MPPT automatically.
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