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

A torque control, wind turbine technology, applied in the control of wind turbines, wind turbines, engine control and other directions, to achieve the effect of optimizing search algorithms, suppressing failure phenomena, and improving wind energy capture efficiency

Active Publication Date: 2017-03-15
NANJING UNIV OF SCI & TECH
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  • Wind turbine self-adaptive torque control method taking changeable turbulent wind condition into consideration
  • Wind turbine self-adaptive torque control method taking changeable turbulent wind condition into consideration
  • Wind turbine self-adaptive torque control method taking changeable turbulent wind condition into consideration

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Experimental program
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Embodiment

[0049] Use the open source professional wind turbine simulation software FAST (Fatigue, Aerodynamics, Structures, and Turbulence) provided by the National Renewable Energy Laboratory (NREL) of the US Department of Energy to simulate the control effect. The wind turbine model adopts the 600kW CART3 test model developed by NERL, and the specific parameters are shown in Table 1.

[0050] Table 1 Main parameters of NREL 600kW CART3 wind turbine

[0051] parameter value rated power 600kW Rated rotor speed 37.1rpm Cut in / rated wind speed 3 / 13.5m / s hub height 36.6m Wind wheel radius 20m Moment of inertia 5.492×105kgm2 best tip speed ratio 5.8 Maximum Wind Energy Utilization Coefficient 0.46

[0052] First, use TurbSim (an open source turbulent wind simulation software provided by NREL) to generate two 8-hour wind speed sequences (including 24 20-minute intervals), the average wind speed of each interval is measured b...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D7/00
CPCF03D7/00F05B2270/1032F05B2270/32F05B2270/327Y02E10/72
Inventor 殷明慧何立君周连俊陈载宇范颖李志翔卜京谢云云蔡晨晓邹云
Owner NANJING UNIV OF SCI & TECH
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