Wind turbine self-adaptive torque control method taking changeable turbulent wind condition into consideration

Abstract

The invention discloses a wind turbine self-adaptive torque control method taking the changeable turbulent wind condition into consideration. According to the wind turbine self-adaptive torque control method, by introducing the dynamic power loss index, the self-adaptive searching process of the self-adaptive torque control method is completed, the phenomenon of algorithm failures caused by changes of the turbulent wind condition is eliminated, and accordingly the wind turbine self-adaptive torque control method taking the changeable turbulent wind condition into consideration is provided. The self-adaptive searching algorithm of the wind turbine self-adaptive torque control method is completed, good adaptability can be achieved under the changeable turbulent wind condition, and the wind energy capturing efficiency of a wind turbine is further improved.

Description

technical field

[0001] The invention belongs to the field of wind turbine control, in particular to a wind turbine adaptive torque control method considering changing turbulent wind conditions. Background technique

[0002] The variable speed fan tracks the change of wind speed by changing its own speed to achieve maximum power point tracking (MPPT). The main MPPT control methods are divided into tip speed ratio method, optimal torque method and hill climbing method. The method of the present invention is based on the optimal torque method (optimal torque control, OT) that has been widely used in most wind turbines.

[0003] Since the calculation of control parameters of OT is based on the steady-state system and ignores the dynamic characteristics of the wind turbine, the tracking performance of the wind speed change in the actual operation of the wind turbine is not good. In order to accelerate the MPPT process of wind turbines, some literatures have proposed a decreased...

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