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Method for tracking and controlling optimum tip speed ratio of wind power generation unit

A technology of wind turbine and blade tip speed ratio, which is applied to the control of wind turbines, wind turbines, engine control parameters, etc., and can solve difficult problems

Active Publication Date: 2015-02-18
NARI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For some Class A wind fields with high wind speed and turbulence, it is more difficult to use this method to correct the power curve

Method used

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  • Method for tracking and controlling optimum tip speed ratio of wind power generation unit
  • Method for tracking and controlling optimum tip speed ratio of wind power generation unit
  • Method for tracking and controlling optimum tip speed ratio of wind power generation unit

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Embodiment Construction

[0020] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various aspects of the present invention Modifications in equivalent forms all fall within the scope defined by the appended claims of this application.

[0021] (1) Calculate the exact generator power value through the feedback torque and speed, and calculate the wind speed through the power factor corresponding to the optimal blade tip speed ratio.

[0022] (2) When the speed can be adjusted, adjust the speed to make the fan run at the best tip speed ratio state. If the speed cannot be adjusted, adjust the pitch angle to make the fan run at the best tip speed ratio state.

[0023] (3) The statistical average hill-climbin...

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Abstract

Disclosed is a method capable of conducting adjustment at a low wind speed so that a fan operates under the condition of an optimal blade tip speed ratio, and simultaneously conducting periodic automatic correction on the value of the optimal blade tip speed ratio. The method comprises the following steps: calculating the exact power value of a generator via a feedback torque and a rotation speed, and calculating a wind speed via a power factor corresponding to the power and the optimal blade tip speed ratio; adjusting the rotation speed to make the fan operate at the optimal blade tip speed ratio under the condition where the rotation speed can be adjusted, and adjusting a pitch angle to make the fan operate at the optimal blade tip speed ratio under the condition where the rotation speed cannot be adjusted; and adopting a statistical average hill climbing method to correct the value of the optimal blade tip speed ratio corresponding to the minimum variable pitch angle.

Description

technical field [0001] The invention relates to the field of wind power generation, in particular to a method for tracking and controlling the optimal blade tip speed ratio of a wind power generating set. Background technique [0002] The maximum power tracking of the wind turbine refers to below the rated wind speed, by adjusting the speed of the wind rotor to make it change with the change of the wind speed, so as to keep the wind turbine at the best blade tip speed ratio and keep the wind energy utilization coefficient at the maximum value, the method to obtain the maximum power output. [0003] Maximum wind power tracking (MPPT) is the core issue of wind power generation, but the characteristics of wind power tracking are determined by wind turbines. Therefore, no matter what kind of wind turbine, the idea of ​​wind energy tracking is the same. At present, the commonly used maximum wind energy tracking control mainly includes the optimal tip speed ratio method, the pow...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D7/00
CPCY02E10/723F03D7/0284F05B2270/32F03D7/022Y02E10/72
Inventor 邬昌明邵宜祥王长宝王文卓胡丽萍曾雨竹蔡国洋
Owner NARI TECH CO LTD
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