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Active pitch control system of wind driven generator with special working condition processing logic

A control system and logic processing technology, applied in the control of wind turbines, wind power generation, wind turbines, etc., to achieve the effect of solving reliability problems, reducing logic complexity, and reducing PLC internal computing overhead

Active Publication Date: 2012-07-04
GUAN HUADIAN TIANREN CONTROL EQUIP CO LTD
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0012] (1) It is impossible to be in two or more special working conditions at the same time;

Method used

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  • Active pitch control system of wind driven generator with special working condition processing logic
  • Active pitch control system of wind driven generator with special working condition processing logic
  • Active pitch control system of wind driven generator with special working condition processing logic

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Embodiment Construction

[0033] The technical solution of the present invention will be described in further detail below according to the accompanying drawings.

[0034] The typical structure of the pitch control system with special working condition processing logic applied in the present invention is shown in the attached figure 1 , the pitch-changing PLC is connected with the first to the third motor drivers through the CAN bus. The first to third motor drivers respectively drive the first to third motors. The first to third motors respectively drive the first to third blade bearings, and through the rotation of the three blade bearings, the angles of the three blades can be changed. Under normal working conditions, the pitch-changing PLC sends angle commands to the motor driver through the CAN bus, and the motor driver drives the motor to drive the blade bearing to rotate to realize the following and positioning control of the blade angle. The first to third blade angle feedbacks are respectivel...

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Abstract

The invention relates to an active pitch control system of a wind driven generator, which realizes special working condition processing logic in a motor driver at the bottom layer of the active pitch control system and direct control on a blade angle. For various special working conditions possibly occurring in the site operation of the wind driven generator, a series of motion measures are adopted in the active pitch control system to ensure safety shut-down, corrective maintenance and normal power generation production of the wind driven generator. The active pitch control system of the wind driven generator with special working condition processing logic has the advantages of reliable safety and remarkable economic benefit.

Description

technical field [0001] The invention belongs to the technical field of wind power generation, in particular to the technical field of variable pitch control of wind power generation. Background technique [0002] The development and application of variable pitch control technology for wind power generation has led to the development of wind turbines towards variable speed and variable pitch models, and the capacity, operational reliability, and power quality of wind turbines have been greatly improved compared with fixed pitch units. Under normal working conditions, the variable pitch system, as a position follower system, follows the position command of the master control, which is of great significance to improve the power generation efficiency and power quality of wind turbines. [0003] When the fan fails, it involves the handling of special working conditions such as safe shutdown of the fan, inspection and maintenance, reset and start-up after the inspection is complet...

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 余康马红星吴国荣吕占鹏李志强闫磊丁宛超
Owner GUAN HUADIAN TIANREN CONTROL EQUIP CO LTD
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