Abstract:Taking into account the problem of the adjustment coefficient of traditional integrated inertial control systems not being able to adapt to the changes in frequency and participation in frequency modulation when the system frequency changes,a variable coefficient integrated inertia control strategy for doubly-fed wind turbine based on fuzzy control is proposed.First,the necessity of adjusting the traditional integrated inertial control coefficient of doubly fed wind turbines is analyzed.Secondly,a separate fuzzy control loop is added to the virtual inertial control and droop control respectively to dynamically adjust the control coefficient with the wind speed and frequency variation.Finally,a three-machine nine-node system model simulation is established in Matlab/Simulink.The results show that the variable coefficient integrated inertial control strategy is more adaptive and flexible than the traditional integrated inertial control strategy.