Abstract
In this paper, a direct power control (DPC) is applied to a DFIG (doubly fed induction generator) based wind power conversion systems (WPCSs). The DPC with seven-level space vector modulation (7L-SVM) strategy reduces the harmonic distortion of voltage/current and power ripple compared with the conventional DPC control scheme; this advantage reduces the ripples of the electromagnetic torque, active and reactive powers. Combined with the DPC technique, the system behavior will present a fast response time, which will guarantee a good tracking of the reference signal. The enhanced performances brought by this strategy are studied in the simulation results.
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