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Independent variable oar control system and control method for wind generator set

A technology for wind turbines and independent pitch adjustment, which is applied in the control of wind turbines, wind turbines, wind power generation, etc., and can solve problems such as increased load inhomogeneity, reduced service life and unit reliability, and increased fatigue loads

Active Publication Date: 2011-02-16
SINOVEL WIND GRP
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AI Technical Summary

Problems solved by technology

The increase in the diameter of the wind rotor means that the unevenness of the load in the plane of the wind rotor is intensified, and the fatigue load of components such as blades, hubs, main shafts and towers increases, which reduces the life of these key components and the reliability of the unit

Method used

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  • Independent variable oar control system and control method for wind generator set
  • Independent variable oar control system and control method for wind generator set
  • Independent variable oar control system and control method for wind generator set

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Embodiment Construction

[0031] The specific embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0032] Such as figure 2 As shown, the independent pitch control system for wind power generators in the present invention includes a sampling module 1, a control module 2 and a drive module 3:

[0033] The sampling module 1 is responsible for collecting the fan power signal 10, the hub speed signal 11, the impeller position signal 12, the pitch angle signal 13, the blade vibration signal 14, etc., and transmits the collected signals to the control module 2 respectively.

[0034] The specific distribution of the sampling module 1 in the wind turbine is as follows:

[0035] What is used to collect the fan power signal 10 is a power signal collection device (not shown in the figure) installed in the generator 4 (or frequency converter controller 5) of the wind power generating set.

[0036] An encoder (not shown in the figure) inst...

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Abstract

The invention relates to an independent feathering control system and a control method for a wind driven generating set, wherein the control system comprises a sampling module, a control module and a driving module. A feathering motor in the driving module is connected with the blades of the wind driven generating set through a speed reducer. The sampling module is used to acquire the signals such as the wind driven generating set power, the boss rotating speed, the impeller position, the feathering angle, the paddle vibration, and the like, and to respectively send the acquired signals to the control module. The control module comprises a wind machine power controller for processing the wind driven generating set power signal and the boss rotating speed signal, a periodic unbalanced loadcompensation controller for processing the impeller position signal, the wind machine power signal and the boss rotating speed signal, a transient state impact load compensation controller for processing the feathering angle signal, the paddle vibration signal, the impeller position signal, the wind machine power signal and the boss rotating speed signal, and an output coupler for processing the signals outputted from the three controllers and comprehensively outputting the signals to the driving module.

Description

technical field [0001] The invention relates to an independent pitch control system and a control method for a wind power generating set, and is mainly applied to a large wind generating set. Background technique [0002] At present, the pitch control system used by megawatt wind turbines is a unified pitch technology, such as figure 1 As shown, the hub is directly mechanically connected to the generator, and the hub is connected to the blades. Its characteristics are: real-time measurement of the hub speed and fan power through the encoder set on the generator and the voltage and current signal sensor set in the wind generator; When the power of the generator set exceeds the rated power, the hub speed and the angle of attack of the blades on the hub can be controlled through the signal directly output by the fan power controller in the control module, thereby limiting the input power of the wind turbine to maintain the power output of the wind turbine The stability and the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D7/00
CPCY02E10/723Y02E10/72
Inventor 辛理夫杨松苏丽营
Owner SINOVEL WIND GRP
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