PMSG Based Wind Turbines Control for System Inertial Response and Power Oscillation Damping by Fuzzy
نویسندگان
چکیده
To enhance the inertial response and damping capability during transient events this paper investigates an improved active power control for variable speed wind turbines. The optimized power point tracking (OPPT) controller, which swings the turbine operating point from the maximum power point tracking (MPPT) curve to the virtual inertia control (VIC) curves by the frequency deviation, is proposed to release the “hidden” kinetic energy and provide dynamic frequency support to the grid. The VIC effects on power oscillation damping capability are theoretically evaluated. The proposed control scheme can provide fast inertial response, and also increase the system damping capability during transient events when compared to the conventional supplementary derivative regulator-based inertia control. Thus, power oscillation damping and inertial response function can be obtained in a single controller by the proposed OPPT control. Here fuzzy logic is used for controlling and compared with PI controller the Simpower systems tool has proved that the combined system will at the same time inject maximum power and provide dynamic frequency support to the grid.
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