DFIG Adaptive Droop Control Strategy Based on Maximum System Frequency Deviation
Aiming at the problem that the existing frequency regulation strategy cannot give full play to the potential of frequency regulation and ensure the safety and stability of DFIG frequency regulation operation,an adaptive droop control strategy of DFIG based on maximum frequency deviation is proposed.Firstly,the wind energy capture model of DFIG is built to clarify the maximum power point tracking mechanism.Then,the control gain is improved in the existing traditional droop control method for wind turbines by fuzzy control.DFIG can adjust the frequency regulation power in real time and improve the frequency drop of the system while ensuring its own stable operation.Finally,the power simulation system model is built in Matlab/Simulink to verify the effectiveness of the proposed strategy.Case analysis shows that the proposed adaptive droop control can make fully use of the frequency regulation potential of DFIG and reduce the maximum frequency deviation of the system under different operating conditions.
DFIGdroop controlcontrol coefficientfrequency deviationfuzzy control
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