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System and method for control of pitch for wind turbines

A technology of wind turbine and pitch control, which is applied in the direction of wind turbine control, control system, control system use, etc.

Inactive Publication Date: 2010-07-28
英格蒂姆能源公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is therefore possible to use the drive to maintain the voltage level required to adjust the pitch during a fault

Method used

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  • System and method for control of pitch for wind turbines
  • System and method for control of pitch for wind turbines
  • System and method for control of pitch for wind turbines

Examples

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Embodiment Construction

[0023] The electric pitch control system will be described below through several embodiments. The description refers to the accompanying drawings as examples to ensure a better understanding of the invention. Thus throughout the specification different reference numerals are used to refer to different parts of the system of the present invention.

[0024] exist figure 2 A preferred embodiment of the invention is schematically shown in . The pitch control system basically consists of the following parts: at least one pitch controller (201), a main converter (205), at least one auxiliary converter (204), a DC gear motor (hereinafter referred to as electric motor) (208) and a DC energy storage system or accumulator (210) consisting of batteries or supercapacitors.

[0025] During normal operation ( image 3 ), the system will work in what we call the first mode of operation. In this case, the contactors K1 (202) and K2 (206) remain closed, so the armature of the motor is co...

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PUM

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Abstract

The present invention describes a pitch control system comprising a principal converter, and auxiliary converter, a direct current motor and a power storage system (accumulator) and has four different operation modes: normal, fault (first level), fault (second level) and emergency. In the case that a fault is detected, the system can move the motor in order to move the vanes to the desired position by making a controlled adjustment.

Description

technical field [0001] The invention relates to a pitch control system, the purpose of which is to adjust the blade pitch angle, and it can be applied to wind power generators in particular. Background technique [0002] The introduction of wind energy has grown significantly in recent years and it can be expected that this growth will continue in the coming years. At present, the rated power of wind power generators is gradually increasing, so that the installed capacity of wind farms is increasing day by day. Wind farms require higher power wind turbines that minimize repair and maintenance costs while reducing environmental impact. This is especially important in coastal wind farms. [0003] The pitch control system is extremely important in the overall operation of a wind turbine because it makes it possible to vary the pitch of the blades in a controlled manner, allowing the wind turbine to go from standstill to rated Generated electricity remains at its optimum poin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D7/02H02P7/28
CPCF05B2270/107Y02E10/723F05B2260/76H02P29/022H02P7/28F03D7/0224H02P29/032Y02E10/72
Inventor 伊凯尔·加门迪亚·奥拉雷加大卫·舒莱·洛佩斯埃内斯托·贝奥莱吉·阿朗古伦赫苏斯·马约尔·卢萨雷塔约根·阿塞多·桑切丝哈维尔·佩雷斯·巴瓦查诺爱诺阿·卡卡·马约尔迈克·萨巴雷塔·马叶兹度霍苏·埃洛里亚加·里昂诺斯哈维尔·科洛马·卡拉霍拉格雷戈里奥·瓦斯·巴里卡特
Owner 英格蒂姆能源公司