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Double-drive electric variable pitch control system and method for wind turbine generator

A wind turbine and control system technology, applied in the control of wind turbines, monitoring of wind turbines, wind power generation, etc., can solve the problems of large tooth stress concentration, endangering the safety of wind turbines, and high single tooth load, and achieve large output signal amplitude, Improve fan safety and good power factor

Pending Publication Date: 2021-06-22
东方电气风电股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the deficiencies of the existing technology, the present invention provides a dual-drive electric pitch control system and control method for wind turbines, which solve the existing problems in the prior art such as large tooth stress concentration, high single tooth load, serious wear and even fatigue damage, Endangering the safety of wind turbines and other issues

Method used

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  • Double-drive electric variable pitch control system and method for wind turbine generator
  • Double-drive electric variable pitch control system and method for wind turbine generator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Such as figure 1 , figure 2 As shown, a wind turbine dual-drive electric pitch control system includes a main controller, a main driver, a main motor, and a main position and speed sensor that are electrically connected in sequence, and a main motor, a main reducer, and a pitch bearing that are mechanically connected in sequence. The master position speed sensor is electrically connected with the master driver, and also includes a slave driver, a slave motor, and a slave reducer, and the master driver, the slave driver, and the slave motor are electrically connected in turn, and the slave motor, the slave reducer, and the pitch bearing Mechanically connected in turn.

[0063] When working, the system performs the following steps:

[0064] S1. The main controller sends a position control command to the main driver;

[0065] S2. The main driver receives the position control command, combines the actual position information and actual speed information of the main moto...

Embodiment 2

[0112] A control method for a dual-drive electric pitch control system of a wind turbine, comprising the following steps:

[0113] S1. The main controller sends a position control command to the main driver;

[0114] S2. The main driver receives the position control command, combines the actual position information and actual speed information of the main motor fed back by the main position speed sensor to drive the main motor to work, and controls the slave driver to drive the slave motor to work;

[0115] S3. The main motor drives the main reducer to work, and the slave motor drives the slave reducer to work;

[0116] S4. The main position and speed sensor detects and outputs the actual position information and actual speed information of the main motor to the main driver;

[0117] S5. The main reducer drives the pitch bearing to work, and the slave reducer drives the pitch bearing to work.

[0118] It is worth noting that because the work of the system is dynamic, the flo...

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Abstract

The invention discloses a double-drive electric variable pitch control system and method for a wind turbine generator. The system comprises a master controller, a master driver, a master motor and a master position speed sensor which are electrically connected in sequence, and further comprises a master motor, a main speed reducer and a variable pitch bearing which are mechanically connected in sequence, wherein the master position speed sensor is electrically connected with the master driver. The system further comprises a slave driver, a slave motor and a slave speed reducer, wherein the master driver, the slave driver and the slave motor are electrically connected in sequence, and the slave motor, the slave speed reducer and the variable pitch bearing are mechanically connected in sequence. The double-drive electric variable pitch control system and method for the wind turbine generator solve the problems that in the prior art, large tooth stress is concentrated, the single tooth load is high, abrasion is serious, even fatigue damage is caused, and the safety of a draught fan is endangered.

Description

technical field [0001] The invention relates to the technical field of pitch control for wind power generators, in particular to a dual-drive electric pitch control system and control method for wind power generators. Background technique [0002] The wind turbine includes a wind rotor and a generator; the wind rotor is composed of blades, hubs, reinforcements, etc.; it has the functions of rotating the blades to generate electricity by the wind, and rotating the generator head. The wind power supply consists of wind turbines, towers supporting the generators, battery charging controllers, inverters, unloaders, grid-connected controllers, battery packs, etc. [0003] Due to the fact that there are less and less economically exploitable wind resources on land, compared with onshore wind power, offshore wind power has the advantages of large wind energy content, small wind shear, low turbulence, and less impact on the environment. Global wind farm construction has emerged. Th...

Claims

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Application Information

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IPC IPC(8): F03D7/02F03D7/04F03D17/00F03D15/00F03D80/70F03D80/00
CPCF03D7/0236F03D7/042F03D15/00F03D17/00F03D80/00F03D80/70Y02E10/72
Inventor 李博曾钰琳杨忾阳静肖杰王淋余业祥赵伟
Owner 东方电气风电股份有限公司
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