但是，在风速小于额定风速的情况下，双馈感应风力发电机组在最大功率跟踪运

However, when the wind speed is less than the rated wind speed, the doubly-fed induction wind turbine is in the maximum power tracking operation state, that is, the power generation that the wind turbine can reach is the maximum value at this wind speed. Therefore, when the wind turbine has no other power reserve, the rotor kinetic energy can only provide short-term active power support. When the speed drops relatively large, it may cause the wind turbine unit to instability or even stall and other safety hazards. . For many of the above problems, more control links can be added to the frequency control link of DFIG to further enhance the control effect.

However, in the case of wind speed is less than the rated wind speed, the dual-feed induction wind turbine in the maximum power tracking operation state, that is, the wind turbine unit can achieve the maximum amount of power generation is the maximum at this wind speed. Therefore, when the wind turbine does not have other power backup, roor dynamic energy can only provide a short period of power support, when the speed drop is relatively large, it may cause the fan unit instability or even stop and other safety hazards. For many of the above problems, more control links can be added to the frequency control link of DFIG to further enhance the effect of control.

However, when the wind speed is less than the rated wind speed, the DFIG is in the maximum power tracking operation state, that is, the generating capacity of the wind turbine is the maximum under this wind speed. Therefore, when the wind turbine has no other power reserve, the rotor kinetic energy can only provide short-term active power support, and when the speed drop is relatively large, it may cause instability or even shutdown of the wind turbine. For the above problems, more control links can be added to the frequency control link of DFIG to further improve the control effect.<br>