Generally, DFIG operates at maximum power points. Here 10% reserves are created through rotor speed control (overspeeding) to provide spinning reserves that can be utilized for primary frequency regulation by DFIG. The DFIG operates at lesser power coefficient of 0.9*0.48. This is done by increasing tipspeed ratio or overspeeding rotor and changing the electrical power reference from Pmax t0 0.9 Pmax. Then a frequency regulation loop will provide additional increase in active power whenever there is frequency deviation from 60 Hz
Venkatesh Yadav (2023). Rotor Speed Control- Deloading Control for Frequency Regulation by wind turbines (https://www.mathworks.com/matlabcentral/fileexchange/49935-rotor-speed-control-deloading-control-for-frequency-regulation-by-wind-turbines), MATLAB Central File Exchange. Retrieved .
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