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

A wind turbine, independent pitch technology, applied in the control of wind turbines, wind turbines, wind power generation and other directions, can solve the problems of increased fatigue load, reduced life and unit reliability, and increased load non-uniformity.
CN101476541AActive Publication Date: 2009-07-08SINOVEL WIND GRP
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SINOVEL WIND GRP
Publication Date
2009-07-08

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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 load compensation 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.
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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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