Wind turbine maximum power point tracking control method with turbulence frequency factor considered

A maximum power point, tracking control technology, applied in the control of wind turbines, wind turbines, motors and other directions

Active Publication Date: 2015-12-09
NANJING UNIV OF SCI & TECH
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  • Abstract
  • Description
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  • Wind turbine maximum power point tracking control method with turbulence frequency factor considered
  • Wind turbine maximum power point tracking control method with turbulence frequency factor considered
  • Wind turbine maximum power point tracking control method with turbulence frequency factor considered

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Embodiment

[0051] The open source professional wind turbine simulation software FAST (Fatigue, Aerodynamics, Structures, and Turbulence) provided by the US National Energy Department's Renewable Energy Laboratory (NREL) is used 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.

[0052] Table 1 Main parameters of NREL600kWCART3 wind turbine

[0053] parameters

value

rated power

600kW

Rated rotor speed

37.1rpm

Cut in / rated wind speed

3 / 13.5m / s

hub height

36.6m

[0054] Wind wheel radius

20m

Moment of inertia

5.492×105kgm2

best tip speed ratio

5.8

Maximum Wind Energy Utilization Coefficient

0.46

[0055] First, use TurbSim (an open-source turbulent wind simulation software provided by the US Department of Energy's Renewable Energy Laboratory (NREL)) to generate turbu...

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Abstract

The invention discloses a wind turbine MPPT control method with a turbulence frequency factor considered. The method includes the steps that based on a power curve adjusting manner of a shrinkage tracking interval, a functional relation of the optimal start rotating speed and three kinds of wind speed feature indexes including the average wind speed, the turbulence intensity and the turbulence frequency is established by the adoption of a response surface approximation model, and accordingly the MPPT method capable of more comprehensively making response to the turbulence wind condition changes so as to improve power signal feedback is proposed. According to the method, considering of the turbulence wind speed feature in the MPPT method is perfected, the MPPT performance of a wind turbine is further improved, and good adaptability is achieved for changing turbulence wind conditions.

Description

technical field [0001] The invention belongs to the field of wind turbine control, in particular to a wind turbine maximum power point tracking control method considering turbulence frequency factors. Background technique [0002] Turbulent wind speed refers to wind speed fluctuations in a short period of time (usually less than 10 min), which is generally understood to be composed of the average wind speed component superimposed on the rapidly changing turbulent component. In wind power research, the characteristics of wind speed turbulence components are generally characterized by turbulence intensity and power spectral density functions. The former reflects the amplitude distribution of wind speed fluctuations around the average value; the latter is a description of the frequency characteristics of turbulent wind speed, which characterizes the change law of wind speed on the time axis. Frequency characteristics will vary with time, terrain, and wind turbine installation ...

Claims

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Application Information

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IPC IPC(8): F03D7/00
CPCY02E10/72
Inventor 殷明慧周连俊何立君卜京谢云云姚娟蔡晨晓邹云
Owner NANJING UNIV OF SCI & TECH
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