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A control method for preventing pitch motor overtemperature in wind turbines

A technology for wind turbines and pitch motors, which is applied in the control of wind turbines, motor control, wind turbines, etc., can solve the problems of complex realization process, inconvenient actual operation, high cost, simple operation, prevention of over-temperature conditions, and high cost. Precisely tuned effects

Active Publication Date: 2018-12-11
CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Using the above method to check and verify the overtemperature problem of the pitch motor one by one, the cost is high and the cycle is long, and the above-mentioned components need to be replaced one by one during the inspection process, which is not convenient for actual operation and the implementation process is complicated

Method used

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  • A control method for preventing pitch motor overtemperature in wind turbines
  • A control method for preventing pitch motor overtemperature in wind turbines

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings and specific preferred embodiments, but the protection scope of the present invention is not limited thereby.

[0032] Such as figure 1 As shown, this embodiment is used in a control method for preventing pitch motor overheating in a wind power generating set, and the steps include:

[0033] 1) Real-time detection of the temperature of the pitch motor in the target wind turbine, if the detected temperature reaches the over-temperature state, go to step 2);

[0034] 2) Control and adjust the pitch angle of the pitch motor to reduce the temperature of the pitch motor to a normal state, return to step 1) until exiting the control.

[0035] In this embodiment, the factors related to the temperature of the pitch motor are determined and obtained by testing different wind power generators in different wind farms in advance. As shown in Table 1, when testing a wind turbine in ...

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Abstract

The invention discloses a control method for preventing over-temperature of a variable pitch motor in a wind power generator set. The control method comprises the following steps of (1) detecting the temperature of the variable pitch motor in a target wind power generator set in real time, forwarding to execute a step (2) if the detected temperature reaches an over-temperature state; and (2) controlling and adjusting a pitch angle of the variable pitch motor to reduce the temperature of the variable pitch motor to a normal state, and returning to execute the step (1) until exiting control. The control method has the advantages of simplicity in implementation and operation and high control efficiency and precision, and the over-temperature of the variable pitch motor can be prevented in real time.

Description

technical field [0001] The invention relates to the technical field of control of wind power generators, in particular to a control method for preventing overheating of pitch motors in wind power generators. Background technique [0002] Under continuous strong wind conditions, the wind turbine is in a rated power generation state, and the pitch motor usually needs to bear a relatively large load; if the rated load on the pitch motor is not large enough at this time, the pitch motor may overheat The situation caused the wind turbine to report a fault and shut down, which affected the power generation and product image. Due to unbalance, long-term running wear and other reasons, the blades, pitch bearings, wedges, pitch reduction gearboxes, pitch motors, and pitch control cabinets may cause pitch motor torque under strong wind conditions. The additional increase of , thus triggering the pitch motor overheating. [0003] As mentioned above, the overtemperature of the pitch m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P29/60F03D7/00
CPCF03D7/00F05B2270/3032F05B2270/329Y02E10/72
Inventor 丁桂林许力伟叶伟郭锐吉天平颜毅斌翟大勇符伟杰陈林陈浪平
Owner CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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